You have done so much research, using exhaust fan and the temperature module, just to practically show us the difference and help us benefit from such method. Your hardwork is commendable
Believe me your idea changed my room temperature. I am delighted. Last night it was around 30 degree census temperature outside but for me It's cool inside my room. I used two fan in two different room but the fan which i used to bring cool air inside my room worked best. I used 12 inch fan which is enough to cool my room. I use another table fan to spread my cool air around my bed which worked as air curtain. Thanks for your innovative experiment.
It's not as powerful as I thought it would be, but it works very well. ua-cam.com/users/postUgkxGjG43--gYqIoT4Xkur2PqCrtbKwTv2h6 There are three options to circulate air, and best of all a remote control for us lazy people. Installation was a breeze (no pun intended). It actually took longer to open the box then it did putting the side extenders on and sitting it in the window opening. It's a perfect alternative when you want airflow, but not the AC. Just might order another one for a different room. UPDATE: Bought another one like I said. They work great. Why not have two...
Tried this and it really works like a charm. Only thing to add is a mosquito/insects net on the outer side is needed if you are living on ground floor. Thanks Mahesh. 👍👍👍
One of the finest video. To the point and practical. I really appreciate the temperature gauge you developed and the graphs. Also appreciate the lady whos helping you in creating this video
Thanks for sharing your results. This kind of content from well planned experiments is what will make a big difference. I hope someone picks up this idea and and advances into a product so that this can benefit everyone. Imagine this becoming part of the A/C which already has most the needed elements.
Great video. I am doing a similar experiment with my room and washroom. I started testing with washroom and it worked very well. Just one suggestion : you should also mention which city you are living and how is its weather. I think the humilidity level and the month of the year also matter alot.
Agree .. I missed to include the city which is Pune having dry weather compared to coastal areas // month of the year is May .. and this year also I used this a lot avoiding use of AC at home
thank you sir for your informative video- i believe you are an engineer, because one can understand from the commitment & detailing you have put into the project.
Appreciate your efforts in giving insights of using exhaust fans. I was looking forward for such experimental videos for long time. Although it was not very effective in your case I think use of both exhaust and intake fan together would make it even more better.
Bahut achchha aor labhkari video! mai bhi esi trah ghar ko naturally cool rakhne ki kosis me rehta hu aapke en efforts & video ko hindi me bnane ke liye dhanyewaad!
Excellent guide Should I use two fans one for out & one for in as suggested by you or can I use one bidirectional fan with changing it every hour by timer . Which unidirectional fans are are godd for in & out. Also which bidirectional fan is good
I suggest to use unidirectional fans, Fit one at lower level from ground (max possible) driving air inside and second driving Air out of the room at highest level from floor (ground) As of now I am using only one fan, but thinking of adding one more to drive the air out (faster results)
Actually as you can see in temperature graph, during daytime, outside temperature is more than inside just using ceiling fan helps. During daytime exhaust fan is not useful both inward or outward direction. For daytime cooling I recommend using heat reflective paint which will drastically help reducing daytime heat coming from roof amzn.to/3jlfcXA
Great experiment, correct me if I'm wrong , agar hum koi heavy desert cooler andhar window ke pas lagake, exhaust ko andhar ki humidity bahar keechne keliye lagathe tho aur phayada hogi ? Mei ye experiment karna chahthahooo
Exhaust fan usually draws out hot air from the room to outside. What is needed is a ventilation fan, which will pull or draw the cool air from outside and an exhaust fan on the opposite end which will drive away the hot air outside. Or the fan which u have installed on your window must have a duel mode...... And another valid point hot air normally rises up, so to drive it out the exhaust fan should be fixed at a higher level. Just a suggestion from my end....
Initially, I purchased a dual-mode fan for this experiment. However, I encountered two issues: inadequate airflow and excessive noise. After multiple trials, I opted for this fan and installed it in reverse, addressing the issues you mentioned. Therefore, the factors you mentioned were indeed experimented with, and the final solution is presented in this video. Please do subscriber my channel 🙂
@@sdhineshkumar1984 fan indeed does not know if the air is hot or cold, to check you can use simple and cheap digital temp gauge (~150 Rs) - see use of it in video
Sir ek bat batao single room hai aour uper ke wall pe exoust fan lagaya hai cooler b chalu hai to sab darwaje aour kidki band raku kya ya fir kula raku darwaje room tanda rakne k liye aour jaha cooler laga hai usi k uper exaoust fan laga hai to work karega n please reply sir
ये बाहर की ठंडी हवा अंदर खींचता है और रूम मे गरम हवा है वो गॅप से बाहर चली जाती है अगर मैं रेगुलर एक्झॉस्ट फॅन जैसे चलाऊ तू अंदर की गरम हवा बाहर फेकता है पर इफेक्ट इतना अच्छा नही आता है ये दोनो सेटिंग मायने टेस्ट करके देखा फिर फायनल फॅन का डायरेक्शन डिसाईड किया
@@yuvraj1005 thank you so much for your appreciation and encouragement... Due to low subscribers I always think.. No use of spending time in making new videos.. But such comments keep me on 🙏❤️
Sir, you have so many views-please continue your great work! I would like to suggest a video on a permanent solution for room cooling. I’ve installed a false ceiling, but I can't add a duct ventilation system. Many people face this issue. Is there a way to fix something in the wall permanently that controls the house temperature and expels hot air outside?
@@yuvraj1005 When I was working in R&D we had a cooling system called as Floor cooling. Floor cooling uses a radiant system where cold water pipes beneath the floor absorb heat, providing silent and even cooling. It's energy-efficient, space-saving, and ideal for a permanent solution without visible units.
What about setting an exhaust fan in another room of the floor to blow outside, and the one in the bedroom (as shown in the video) to blow inside. Will it pull more cool air inside? What is your opinion on this ?
Very very nice thought sir.....👍 I appreciate your efforts....i also observed this phenomenon and was about to experiment it...but luckily found your video on internet....these temprature difference are reversed in winters....i want to ask in which month you did this process and your city
which would be the best 2 way low noise fan ? and to make it 2 way do we need to have separate switch set up or just turn the plug and put and it works other way around ?
Two way fans are made by local companies and metal blades, they are noisy. If you see my video, the experiment began with the 2 way fan, but later I returned it due to high noise and low air throw and went with खेतान branded plastic one way fan which has good air throw and low noise For 2 way local made fans, they give reverse switch to change the direction Just an example of duel direction fan where you can see the direction reverse switch amzn.to/3wnF6jr
Superb sir, you have done very useful experiment that practically working very well. Big thumbs up for your dedication and hard work to conduct this experiment. I would love to try this
Sir, my room is on the top floor. Now, my room is very hot, I took an air cooler but got no results. So, i decided to apply this in my room , How do you think you should buy the exhaust fan for my bedroom? Normal exhaust fan, or reversible exhaust fan?
1) Given your room's location on the top floor, it's crucial to mitigate excessive heat absorption by applying heat-reflective paint to the roof. I've provided a recommended paint link in the video description for your convenience. 2) If your air cooler isn't yielding results, there could be two possible reasons. Firstly, if you reside near the sea shore, characterized by high humidity levels. Secondly, it's essential to ensure correct positioning of the air cooler. Avoid sealing doors/windows while in use, and position it to intake fresh air rather than recirculated air. If you like my channel then do share and subscribe since I get only 100 subscribers per month !!
@@TrekBookIndia Thank you so much sir ,No doubt I have already subscribe your channel for this type of content. I live near a market, lots of noise are disturbing , So I can't open windows and doors. It is not possible to sleep with windows or doors open at night even if they are opened during the day. Can't afford to buy AC. Please give me some suggestion for this problem.
@@ayanpramanik220 Explore two options for creating a cool air intake path: 1. DIY Cool Air Ducting: Use insulated vent hoses to channel cool air from a shaded area into your room through the window gap. This directs cool air to replace hot air extracted by the fan. 2. Professional Cool Air Intake Vent: Consider installing a cool air intake vent on an exterior wall to draw in cooler air from a shaded location, minimizing noise concerns. Additionally, consider these evaporative cooling alternatives: - Damp Towels: Place damp towels strategically around the room for some evaporative cooling, especially with good air circulation. - Icy Bowl with Fan: Position a bowl filled with ice in front of your exhaust fan to blow cool air across the room, though effectiveness may be limited in humid environments.
In India, dust tends to settle down at night, so the risk of dust entering is minimal. I've been using this system for two years without any dust-related issues. You can install a wire mesh in front of the fan to block dust, but it significantly reduces airflow, making it ineffective.
Sir, when the display of the fan is like it should be fitted with blades inward.. after seeing your video i was able to know that it is effective if it could be done other way also with effective ness.. one question is that are the plastic blade fans lasting long when we operate them for 10 hours in the night
Being an engineer , i have successfully droppod 7 - 8 degree temperature. Certain recommendations. Use a cooler and exhaust fan combo. Use dimmer in both Adjust height of both as per warm and cool air separation. Observe temperature, pressure zone and natural wind circulation pattern for easy exit of hot. Air and recirculation of cold air. If you need i can send u pics of my successful project.
Interesting hack! I have a question for you here pls, I have a room which has very good AC flow coming in, I plan to make a gypsum partition up till the ceiling with sound proof partition walls; however this will ideally block the ventilation... Will it work that if I put an exhaust to both sides of the walls aligned; so from one room cooling will pass to the room with no ventilation because of the partition? Also, will it be the same cooling temp as the room with no divider? and what if I put 2-3 exhausts on each side to let the air flow in? looking forward to your reply; thanks in advance!
You will need 2 exhaust fans fitted in such a way that one fan throws AC air in partition room which is at lower height and other fan which takes back warm air from portioned room back to the AC room for cooling Alternatively you can try to use only one fan to push cold air in partioned toom and keep big hole in partition top which will push warm air back to AC room.
As I understand, you have AC in bedroom and want to use fans to get chill from bedroom... This won't work and will increase electricity bill.. If you are in non coastal location then best way for hall cooling is to use air cooler If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
@@TrekBookIndia but total area is 140 sqft only .why it won't work it should right. If I use one exhaust fan to suck hot air from Hall to bedroom then bottom at 5 feet one fan to throw cool air it will create air circulation.as per logic it will work right ?
@@naveenreddym6137 While your idea has some logic, it won't be very effective for cooling the hall and might actually increase your electricity bill. - Limited Cooling Effect: The cool air from your bedroom AC is limited and pushing it out to the hall with fans might slightly cool the space but won't make a significant temperature difference. - Inefficiency: Fans will continuously work, consuming electricity without efficiently cooling the hall. - AC Strain: Your bedroom AC will work harder to maintain cool air, leading to higher energy consumption and bills. - Alternative Solutions: - Portable AC Unit: More efficient for cooling the hall if budget allows. - Tower Fan: Better airflow circulation than exhaust fans, positioned strategically for effectiveness. - Air Cooler (Non-Coastal Areas): Cost-effective cooling option if humidity is low. - Specific Fan Idea: Using exhaust and intake fans wouldn't effectively cool the hall due to limited cool air source and temperature transfer limitations. Circulating cool air with a tower fan or exploring alternative cooling options like portable AC units or air coolers would be more effective and energy-efficient solutions for cooling the hall.
I used inside outside thermometer, its a single device that shows both the temperatures on the same screen. For bringing outside air we just kept the doors and windows open through out the night, allowing to exchange automatically. I fixed mosquito nets at all places which were kept open. It really helped to reduce use of airconditioner.
Namaskar Uncle ji. 4 wing fan or 3 wing fan iron wala lu. confused hu. Plastic wala sahi ya iron wala and which brand. Mera room 12*20 hai and only windows hai.
4 wings plastic fan is good since it throws more air and makes less noise compared to the metal fan I have tried both metal and plastic Check for product link in video description, it's the same fan I am using... You can go for same brand bigger size fan
Consider a case where the room has 2 windows one is small and one is large 2x. Now outside is 25c and inside is 30 So should we put a big exhaust for the inlet or a big exhaust for the outlet ? Or other way? The question I want to understand is should we blow out the hot air more or should we take in cold air more. I hope u can get my question
You've got the right idea! In your scenario, to cool the room most effectively using an exhaust fan, you'll want a larger exhaust fan for the outlet (blowing hot air out) and a smaller inlet (drawing cool air in). Here's why: - Hot Air Rises: Hot air naturally rises within a room. - Pressure Differential: By creating a stronger exhaust at the outlet, you'll create a lower air pressure inside the room compared to the outside. This pressure difference will draw cooler air from outside through the smaller inlet. Thinking about airflow: Imagine the exhaust fan as a giant vacuum cleaner sucking out hot air. A larger outlet fan will create a stronger "suck" which will pull in more cool air through the smaller inlet, creating a more effective circulation of cooler air.
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If you have a bathroom attached to the bedroom and has an exhaust fan, keep the door open and run it , to send out the hot air. In addition, you can attach an exhaust fan to the window opening to bring in fresh, cool air thro' bedroom windows - it will immediately start chilling the room. Spraying water in the room with an empty Colin Spray bottle will further bring down the temperature
The exhaust fan creates negative pressure inside and it is sufficient to pull the cool air from outside from the windows. So another inlet fan to let the air inside is required?
The factors influencing the choice include room size, window size, window placement, and the number of windows. This can be assessed through either expensive CFD analysis or practical experimentation with single or multiple fans. If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
@@NagarajKS-eq3fp In my case the bedroom is 10 x 10 and I am happy with single fan... So it depends... And I am using it to blow air from outside to inside to create positive pressure... I have tried to use it in reverse way to create negative pressure however effectiveness was very less
It can't control humidity, but surely will not reduce it... Like when you use AC then humidity in room reduces too much since AC pulls out moisture from air... Here fan continuously pushes fresh air inside room so will not reduce humidity
Very good experiment.. Just wanted to know, will it not help better to reduce temperature, running fan in opposite direction due to passive cooling ( Thermodynamics)
I tried that... Problem is that room temperature is high and outside temperature is low, so we are driving hot air out from room, but then since the bedroom is big it's unable to cool the room effectively. Also having fan driving air inside brings low temperature air (almost 5 deg low) directly on bed which creates comfort while sleeping. These are practical observations... Being a mechanical engineer and worked so many years in R&D I have always experienced difference in theory and actual feel.... I am not sure if I am able to convey you... But for me the inward direction worked good 😊🙋
Mostly India is not that keen on home ventilation so generally local companies does such jobs... Like mostly in areas like jaipur and udaipur you get local companies installing home ventilation systems
Having ceiling exhaust rather than on the window will improve the cooling effectiveness and if you pair it with a pedestal fan blowing air from outside to the middle of the room in the evening makes the room very cool for good nights sleep 🙂
While I read your question I have exhaust fan working on window of my bedroom 😊 Anyway.. 150 sq feet is big room, so better to have 12" fan... Also it's important to know from which city you are, since mostly in coastal areas this idea won't work
@@TrekBookIndia thank you sir.sir what will happen if instead of blowing air in and out both,i blow air out only?will air automatically blow inside?And if i have to install one,which one is better?blowing air in or blowing air out?
I want to buy table fan can i put it near to window in night instead of buying exhaust fan and will it replace need of exhaust fan by pulling air from outside to room. @pune.
It works, but you need to locate it very near to window or best to put inside grill of window. One of my friend in Baner has put table fan from outside window since he has access from balcony and it is working well 👍 If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
You are most welcome 🙏 Just for info that I am still using this even in month of May I think this year in total I have used my AC only 3-4 times when it was extremely hot, rest time I used exhaust fan 💪😊
@@ShiningStarOfficialChannel thank you... Actually this experiment was in my mind since years, but due to the job I couldn't do it. As soon as signed off from my job I got time to do such things 😊💫
Very good experiment, thanks for the great work. This experiment will be really helpful for those who can't afford AC and it will help mother nature too. As Celling fans using the same air in the room it increases room temperature and CO2 level also get increased over the night. So here the important thing is we need to expel the air inside the room. I am proposing like we can make two exhaust holes on top both corners of the room the hole size as like in kitchen. We can use two exhaust fans one for fresh air inlet and another for outlet, so that we can ensure the same exhaust air not circulated back through inlet fan, here the distance between the two fans are important. So, the main advantage of using the exhaust fan we will get fresh air all the time. We can cover the holes outside with mosquito net to avoid mosquito and insects and we can use steel grills for safety purpose. Sometimes the inlet air drawn by 9 inch exhaust fan many not be sufficient. In that case, we can use only one exhaust fan to expel the air outside and we can keep another hole open, so that as usual by using our regular celling fan we will get fresh forced air inside through the inlet hole. As per law of equilibrium once we expel the air from room automatically the fresh air will get inside the room to fill the vaccum created by the exhaust fan. If you think this idea has some sense, I Kindly request you to carry out experiment on this and post the results. Thank you.
Opening windows is a great natural cooling strategy, especially at night when outdoor temperatures are cooler. If you can create a good cross-breeze, you might not even need an exhaust fan. However, exhaust fans can be a helpful addition in some situations, such as removing hot air pockets or managing humidity. if you like my channel then do subscribe since I get only 100 subscribers per month !!!
Sir, please make a video in which you can tell us about the effectiveness of exhaust fan concept with air cooler in bad summer days. This will help a lot. And sir please tell about the paint that you mentioned . Thanks in advance.
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If you like my Answer/Channel then do Subscribe 😀 I only get 100-200 subscribers a month despite of my efforts 😔😔😔 Pulling hot air out of a room with an exhaust fan won't be as effective for cooling as pulling cold air in at night. There are a few reasons for this: 1. Temperature Difference: Cold air naturally wants to move to warm areas to equalize temperatures. This creates a pressure difference that helps draw more cold air into the room when you extract hot air. In contrast, hot air doesn't have the same natural tendency to move towards cooler areas. As a result, simply extracting hot air might not create enough suction to draw in significant amounts of fresh, cool air, especially if the temperature difference between inside and outside isn't substantial. 2. Airtightness: Unless your room is perfectly airtight, pulling hot air out creates a slight vacuum that draws air from any available opening, including cracks, gaps, and vents. This can pull in warm air from other parts of the house, negating the cooling effect. Pulling cold air in at night minimizes this issue as the colder outside air is naturally drawn in to replace the extracted warm air. 3. Replacement Air: Regardless of the method, cooling a room depends on replacing warm air with cooler air. Even with perfect airtightness, extracting hot air only creates a void; it doesn't actively bring in cool air. For effective cooling, you need a source of cool air to replace the extracted hot air. This is more easily achieved by pulling in cold air directly than relying on natural pressure differences that may not be strong enough. Additional factors: * Fan power: A more powerful fan might improve the effectiveness of extracting hot air, but ensure it doesn't create excessive noise or drafts. * Humidity: If the outside air is humid, pulling it in might not feel as cool due to the increased moisture content. * Airflow direction: Consider positioning the fan strategically to create a specific airflow path that draws in cool air from a desired location. While extracting hot air can contribute to some cooling, it's generally less effective than directly pulling in cool air, especially if the temperature difference is significant. Combining this method with other cooling strategies like cross-ventilation, using fans strategically, and minimizing heat sources within the room might offer better results.
That's why purane deno ke ghar mai ventilator reheta tha taki celling fan baharka hawa andar khiche...ek doubt hai is experiment Mai celling fan agar chalega to is chotese exhaust fan ka hawa utna useful nehi hoga sayad.. celling fan ka hawa celling se niche ki taraf ake khirse bhar janeki kosis karega tab exhaust ka hawa resist hoga..agar exhaust fan celling fan ka jo rod hai us distance Mai kisi bhi wall Mai laga hua hoga to cool air or jaldi andar ayega..but apke effect ke lie ek like to banta hai
amzn.to/3VqBb3h Crompton Metal Trans Air Reversible 9-Inch Exhaust Fan this is the only branded fan in reversible mode available .. which is costly .. instead buying this better to buy 2 fans separately in the same price and fit as you desire ..
Sir great video... I have a question and if you can answer it that will be great. In my room there is only one window and there is nothing else for the ventilation apart from that window... I keep the door closed most of the time... I was thinking of adding a ventilation fan on top of the window and attaching another small fan on the lower side of the same window to bring in fresh air... Will this help in cooling down the room?
It depends upon how tall your window is - if it is quite tall ... say 6 feet or so .. then adding 2 fans might help ... But if the window is small then adding 2 fans will not help
Thank you for your suggestion .. as on now I am still using the temporary arrangement done at the time of experiment and it is working well .. so I will do in proper way soon 🙂
I have also don some experiment.... So i would say u should fix the exhaust fan up of your window coz hot air is more liter then the cold ❄ air weight... Hot 🔥 air alway go upside nd cold ❄ air down side coz cold air is very dance... I will work effectively more if u fix in ventilator.
Yes.. I have tried different locations... And although this location is technically wrong, practically it throws cold air directly on the bed giving comfortable sleep and hence finalize 😊🙋
@@mradulrajpoot5935 You're absolutely right! The direction of cool air from an air cooler can be affected by its placement. Here's why and how to optimize it: Air coolers work on the principle of evaporative cooling. They draw in hot air, pass it through water-soaked cooling pads, and then blow out the cooler, moisture-laden air. Placement for Optimal Cooling: - Ideally, position your air cooler in front of a window or open area that faces the prevailing wind direction. This allows for a fresh supply of hot air to be drawn in and cool air to be expelled efficiently. - If there's no prevailing wind, prioritize placing the cooler: - North facing window in summer: In the Northern Hemisphere (including India), during summers, southerly winds are common. North placement allows hot air intake and cool air expulsion. - South facing window in winter (if applicable): South-facing windows receive more sunlight in winters, which can help raise the room temperature slightly. However, prioritize proper ventilation throughout the year.
Sir if it's a bigger room or hall can we try with two or three exhaust fans placed one after the other? Will it provide btr cooling? Bionaire twin window fan is it worth? Can you please look at the product n comment?
1) For bigger room or hall, it will be worth using multiple fans, as shown in my video - to start with you can start with 1 exhaust fan to drive air inside from one side of room, and use second fan to take the heat out (exhaust mode) - if that gives you some relief, then you can use 2 fans for inlet and 2 fans for outlet 2) Bionaire twin window fan if you are taking about this product amzn.to/3CZOAEv then it is not worth in my opinion, instead go for multiple exhaust fans like amzn.to/3IuPwlj this will be cheaper solution
@@TrekBookIndia sir my bigger room opens to a balcony..this balcony s cooler than my room..i ve two windows in my room which opens to balcony..can I use a pedestal fan or something in the balcony , facing my room window..ll it work btr than exhaust fan?
@@swamiv330 pedestal fan will not work better than exhaust fan due to the fact that they both are designed for different purposes... Blade designs differ. But if you anyway have pedestal fan at home, then surely you can try it - but don't buy new pedestal fan for this purpose, it's costly than exhaust fan and will not be that effective 🙃🙋
@@TrekBookIndia thanks for your quick response !! Do u think applying reflective paint helps feeling cooler in nite time? Or is it only a daytime cooling effect? Which brand u prefer? Excelcoat or luminX?
@@swamiv330 yes, for sure reflective paint help. About brand I need to check with my friends in Jalgaon since they do this countermeasure. Plz allow me some time since right now I am on Uttarakhand trip 🙏
What will happen if I use air cooler as exhaust that bring air inside while using exhaust that throw air outside on the same wall as air cooler?? Sir I am eager to know =)
The exhaust fan experiment was efficient during the day but I will say it was quite inefficient during the night. I will say a more efficient setup during the night would have been to keep all the windows open and putting another exhaust fan on the opposite end of the room to trigger airflow this way cooling at night would be much more efficient and the room would cool to the outside temperature by the next morning.
This I have tried... Believe me it won't work... Finally I am able to live without AC this summer with thus setup... Only thing is I live in pune where temperature outside drops surely at midnight... 🙋 Being worked in R&D over 30 years I have learned that many things ghat we assume based on theory do not work out practically... Similarly here practically what works that I have shown 🙏
You have done so much research, using exhaust fan and the temperature module, just to practically show us the difference and help us benefit from such method. Your hardwork is commendable
Thank you very much for your appreciation and support 😊🙏
Believe me your idea changed my room temperature. I am delighted. Last night it was around 30 degree census temperature outside but for me It's cool inside my room. I used two fan in two different room but the fan which i used to bring cool air inside my room worked best. I used 12 inch fan which is enough to cool my room. I use another table fan to spread my cool air around my bed which worked as air curtain. Thanks for your innovative experiment.
I am really happy that this idea worked for you saving valuable energy sources using an AC
😊💡👍
It's not as powerful as I thought it would be, but it works very well. ua-cam.com/users/postUgkxGjG43--gYqIoT4Xkur2PqCrtbKwTv2h6 There are three options to circulate air, and best of all a remote control for us lazy people. Installation was a breeze (no pun intended). It actually took longer to open the box then it did putting the side extenders on and sitting it in the window opening. It's a perfect alternative when you want airflow, but not the AC. Just might order another one for a different room. UPDATE: Bought another one like I said. They work great. Why not have two...
I am happy that you liked the idea 😊💡
Tried this and it really works like a charm. Only thing to add is a mosquito/insects net on the outer side is needed if you are living on ground floor. Thanks Mahesh. 👍👍👍
You are most welcome 😊🙏 I am happy that you used the idea and saved some energy for our country 🇮🇳🙏
One of the finest video. To the point and practical. I really appreciate the temperature gauge you developed and the graphs. Also appreciate the lady whos helping you in creating this video
Thank you so much for your appreciation 😊🙏 I am happy that you liked the content 👍
Do saal se yah kar raha sir, bahut fark padta hai, very scientific, thanks so much. 🙏
You are most welcome 😊🙏 you are helping nature as well as our nation to save valuable energy 🇮🇳👍
Ram Ram sir 🙏 Appreciate ur efforts for elaborating everything practically with zero confusion.... U r great 🙏
Thank you so much for your appreciation 🙂 do subscribe if you like my content. Warm regards from Pune, Maharashtra, Bharat
Thanks for sharing your results. This kind of content from well planned experiments is what will make a big difference. I hope someone picks up this idea and and advances into a product so that this can benefit everyone. Imagine this becoming part of the A/C which already has most the needed elements.
Yes..
And for me it has saved electricity bills this summer 😊👍
This is best idea though. For evening & night actually as temperature outside is cooler than room so it will drag cool air in the room.
My dude, you are goals! I too was thinking of doing this and came across your video.
I have a major concern for the mosquitoes entering, though.
You may like to use mosquito net at suction area plz 🙋
Sir, fantastic experiment, I am exactly facing this issue and looking to implement your solution, Thank you very much
@@Manjuauto you are most welcome 😊🙏
I am sure you will save valuable electricity using exhaust fan in proper way 🇮🇳
Thank sir for information and your hard work ❤❤❤❤
You are most welcome 😊🙏
Very Detailed and Methodical experiment. Loved it!
Thank you very much for your appreciation 😊🙏
Great informative and pratical experiment,
I will also try it.
Really liked the way you explained.
✨✨
I am happy that you found the information helpful - I am sure the idea will help you too 🙂
Great video. I am doing a similar experiment with my room and washroom. I started testing with washroom and it worked very well. Just one suggestion : you should also mention which city you are living and how is its weather. I think the humilidity level and the month of the year also matter alot.
Agree .. I missed to include the city which is Pune having dry weather compared to coastal areas // month of the year is May .. and this year also I used this a lot avoiding use of AC at home
thank you sir for your informative video- i believe you are an engineer, because one can understand from the commitment & detailing you have put into the project.
You are most welcome 😊🙏
And thank you for the appreciation
Great sir, long time searching for this kind of experimental video. Thank you 🤝
You are most welcome 😊🙏
Appreciate your efforts in giving insights of using exhaust fans. I was looking forward for such experimental videos for long time. Although it was not very effective in your case I think use of both exhaust and intake fan together would make it even more better.
Yes, using 2 fans surely helps.
In my case right now while writing you reply my exhaust fan is running giving me a cold breeze ❄️👍
Bahut achchha aor labhkari video!
mai bhi esi trah ghar ko naturally cool rakhne ki kosis me rehta hu
aapke en efforts & video ko hindi me bnane ke liye dhanyewaad!
You are most welcome 😊🙏
Excellent guide
Should I use two fans one for out & one for in as suggested by you or can I use one bidirectional fan with changing it every hour by timer .
Which unidirectional fans are are godd for in & out.
Also which bidirectional fan is good
I suggest to use unidirectional fans,
Fit one at lower level from ground (max possible) driving air inside and second driving Air out of the room at highest level from floor (ground)
As of now I am using only one fan, but thinking of adding one more to drive the air out (faster results)
@@TrekBookIndia Thanks,.
Any recommendation for fans for incoming & outgoing.
Also one time I woul like to say that , very good scientific videos.
I was planning to do this for long time but was sceptical about the results. But your video gives the confidence.now i am going to try it. Thanks 🙂
You are most welcome 😊🙏
Is there any exhaust fan available which is bidirectional 2way switch ? Or revering the current would make it run anti-clockwise?
@@eurolife1117 yes, it is available. amzn.to/3pOdPEa
I got this idea in my mind and searching that there is any one who used like that and then i got this video. .. thanx for suggestion
You are most welcome 😊👍
I am using it till today... It has saved a lot for me each summer
Appreciating you for the concerns towards environment. Thanks keep doing more practicals.
Thank you for your appreciation 😊🙏 please do subscribe my channel since I get only 100 subscribers per month 😅
Very detailed n helpful. I would be very happy if one more video is created covering day time cooling of room without airconditioner.
Actually as you can see in temperature graph, during daytime, outside temperature is more than inside just using ceiling fan helps. During daytime exhaust fan is not useful both inward or outward direction.
For daytime cooling I recommend using heat reflective paint which will drastically help reducing daytime heat coming from roof
amzn.to/3jlfcXA
Great experiment, correct me if I'm wrong , agar hum koi heavy desert cooler andhar window ke pas lagake, exhaust ko andhar ki humidity bahar keechne keliye lagathe tho aur phayada hogi ? Mei ye experiment karna chahthahooo
Yes, for sure it will help 👍
Completely agree ..
God bless you 🙏
For ur hard work to making this experiment
Thank you very much for your appreciation and support 😊🙏
Exhaust fan usually draws out hot air from the room to outside. What is needed is a ventilation fan, which will pull or draw the cool air from outside and an exhaust fan on the opposite end which will drive away the hot air outside. Or the fan which u have installed on your window must have a duel mode...... And another valid point hot air normally rises up, so to drive it out the exhaust fan should be fixed at a higher level. Just a suggestion from my end....
Initially, I purchased a dual-mode fan for this experiment. However, I encountered two issues: inadequate airflow and excessive noise. After multiple trials, I opted for this fan and installed it in reverse, addressing the issues you mentioned. Therefore, the factors you mentioned were indeed experimented with, and the final solution is presented in this video.
Please do subscriber my channel 🙂
How does a fan knows if the air is hot or cold?.
@@sdhineshkumar1984 fan indeed does not know if the air is hot or cold, to check you can use simple and cheap digital temp gauge (~150 Rs) - see use of it in video
Sir ek bat batao single room hai aour uper ke wall pe exoust fan lagaya hai cooler b chalu hai to sab darwaje aour kidki band raku kya ya fir kula raku darwaje room tanda rakne k liye aour jaha cooler laga hai usi k uper exaoust fan laga hai to work karega n please reply sir
You can close the room door and keep exhaust fan for throwing air out
Sir aapne ulta exhast lagaya hai plese answer
ये बाहर की ठंडी हवा अंदर खींचता है और रूम मे गरम हवा है वो गॅप से बाहर चली जाती है
अगर मैं रेगुलर एक्झॉस्ट फॅन जैसे चलाऊ तू अंदर की गरम हवा बाहर फेकता है पर इफेक्ट इतना अच्छा नही आता है ये दोनो सेटिंग मायने टेस्ट करके देखा फिर फायनल फॅन का डायरेक्शन डिसाईड किया
I am so impressed by you, this video is very very helpful.
@@yuvraj1005 thank you so much for your appreciation and encouragement... Due to low subscribers I always think.. No use of spending time in making new videos.. But such comments keep me on 🙏❤️
Sir, you have so many views-please continue your great work! I would like to suggest a video on a permanent solution for room cooling. I’ve installed a false ceiling, but I can't add a duct ventilation system. Many people face this issue. Is there a way to fix something in the wall permanently that controls the house temperature and expels hot air outside?
@@yuvraj1005
When I was working in R&D we had a cooling system called as Floor cooling.
Floor cooling uses a radiant system where cold water pipes beneath the floor absorb heat, providing silent and even cooling. It's energy-efficient, space-saving, and ideal for a permanent solution without visible units.
Thanks a lot Sir. What's the brand for temperature sensors ? Are these available online ?
Yes, available online for very low prices
amzn.to/3E1TQcq
What about setting an exhaust fan in another room of the floor to blow outside, and the one in the bedroom (as shown in the video) to blow inside. Will it pull more cool air inside? What is your opinion on this ?
Yes, but the rooms must be interconnected to each other without any leakage path
Very very nice thought sir.....👍 I appreciate your efforts....i also observed this phenomenon and was about to experiment it...but luckily found your video on internet....these temprature difference are reversed in winters....i want to ask in which month you did this process and your city
@@adityapanwar4840 I have done this experiment in May in Pune city. Last 3 years using the idea successfully reducing my electricity bills 😊👍
@@TrekBookIndia commendable job sir👏 these little initiatives will make change one day
@@adityapanwar4840 yes 😊👍
I tried it very excellent 👌 working i love u sir
You are most welcome 😊🙏
I am really happy that it helped you💡
which would be the best 2 way low noise fan ?
and to make it 2 way do we need to have separate switch set up or just turn the plug and put and it works other way around ?
Two way fans are made by local companies and metal blades, they are noisy. If you see my video, the experiment began with the 2 way fan, but later I returned it due to high noise and low air throw and went with खेतान branded plastic one way fan which has good air throw and low noise
For 2 way local made fans, they give reverse switch to change the direction
Just an example of duel direction fan where you can see the direction reverse switch amzn.to/3wnF6jr
Superb sir, you have done very useful experiment that practically working very well. Big thumbs up for your dedication and hard work to conduct this experiment. I would love to try this
I am happy that you liked the experiment, thank you so much for your appreciation 😊🙏
Sir is it safe for the exhaust to work overnight like for 8 hours straight continuously?? I mean will the exhaust overheat and burn down ?
No issues... Exhaust fans (especially branded once with ISI marking) are designed to work for prolonged hours
Room ka gate or windows close rakhna hai ki nhi while using exhaust fan
nhi
Sir, my room is on the top floor. Now, my room is very hot, I took an air cooler but got no results. So, i decided to apply this in my room , How do you think you should buy the exhaust fan for my bedroom? Normal exhaust fan, or reversible exhaust fan?
1) Given your room's location on the top floor, it's crucial to mitigate excessive heat absorption by applying heat-reflective paint to the roof. I've provided a recommended paint link in the video description for your convenience.
2) If your air cooler isn't yielding results, there could be two possible reasons. Firstly, if you reside near the sea shore, characterized by high humidity levels. Secondly, it's essential to ensure correct positioning of the air cooler. Avoid sealing doors/windows while in use, and position it to intake fresh air rather than recirculated air.
If you like my channel then do share and subscribe since I get only 100 subscribers per month !!
@@TrekBookIndia Thank you so much sir ,No doubt I have already subscribe your channel for this type of content.
I live near a market, lots of noise are disturbing , So I can't open windows and doors. It is not possible to sleep with windows or doors open at night even if they are opened during the day. Can't afford to buy AC. Please give me some suggestion for this problem.
@@ayanpramanik220
Explore two options for creating a cool air intake path:
1. DIY Cool Air Ducting: Use insulated vent hoses to channel cool air from a shaded area into your room through the window gap. This directs cool air to replace hot air extracted by the fan.
2. Professional Cool Air Intake Vent: Consider installing a cool air intake vent on an exterior wall to draw in cooler air from a shaded location, minimizing noise concerns.
Additionally, consider these evaporative cooling alternatives:
- Damp Towels: Place damp towels strategically around the room for some evaporative cooling, especially with good air circulation.
- Icy Bowl with Fan: Position a bowl filled with ice in front of your exhaust fan to blow cool air across the room, though effectiveness may be limited in humid environments.
@@TrekBookIndia Thank you sir , I shall definitely try these methods, I think it will help me a lot . Again thank you so much ❤️.
Sir humid climate mai yae kaam karenga khiya?
Aap kaunse City mai yae experiment kiye?
ये हुमीड क्लाइमेट मे ज्यादा काम नही करेगा मैने ये एक्सपिरिमेंट पुणे सिटी मे किया है ड्राय क्लायमेट होगा तो अच्छा इफेक्ट आता है
@@TrekBookIndia ok sir ..
Sir, If you fix exaust fan, the outside dust may enter indide house, is there any way to prevent the dust.
In India, dust tends to settle down at night, so the risk of dust entering is minimal. I've been using this system for two years without any dust-related issues. You can install a wire mesh in front of the fan to block dust, but it significantly reduces airflow, making it ineffective.
For same window can we put one fan for inflow in the bottom and one on the top for outflor
It may not be that effective
I Did the same for my parents room.. good result❤
Great to know that it helped you 😊👍
Sir, when the display of the fan is like it should be fitted with blades inward.. after seeing your video i was able to know that it is effective if it could be done other way also with effective ness.. one question is that are the plastic blade fans lasting long when we operate them for 10 hours in the night
Yes, plastic fans are also durae👍
Being an engineer , i have successfully droppod 7 - 8 degree temperature.
Certain recommendations.
Use a cooler and exhaust fan combo.
Use dimmer in both
Adjust height of both as per warm and cool air separation.
Observe temperature, pressure zone and natural wind circulation pattern for easy exit of hot. Air and recirculation of cold air.
If you need i can send u pics of my successful project.
That's really good sir.... Kindly send pictures of the setup on mahesh@trekbook.in
Warm regards, Mahesh 😊🙏
can i contact you?
@@memic3511 yes please. send your phone number to mahesh@trekbook.in and I will call you
Interesting hack!
I have a question for you here pls, I have a room which has very good AC flow coming in, I plan to make a gypsum partition up till the ceiling with sound proof partition walls; however this will ideally block the ventilation... Will it work that if I put an exhaust to both sides of the walls aligned; so from one room cooling will pass to the room with no ventilation because of the partition? Also, will it be the same cooling temp as the room with no divider? and what if I put 2-3 exhausts on each side to let the air flow in?
looking forward to your reply; thanks in advance!
You will need 2 exhaust fans fitted in such a way that one fan throws AC air in partition room which is at lower height and other fan which takes back warm air from portioned room back to the AC room for cooling
Alternatively you can try to use only one fan to push cold air in partioned toom and keep big hole in partition top which will push warm air back to AC room.
@@TrekBookIndia thank you. Lemme try.
Cheers!
Can i use two in out fans from bedroom to hall to cool with ac .will work? Any loss in power bill
As I understand, you have AC in bedroom and want to use fans to get chill from bedroom... This won't work and will increase electricity bill..
If you are in non coastal location then best way for hall cooling is to use air cooler
If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
@@TrekBookIndia but total area is 140 sqft only .why it won't work it should right. If I use one exhaust fan to suck hot air from Hall to bedroom then bottom at 5 feet one fan to throw cool air it will create air circulation.as per logic it will work right ?
@@naveenreddym6137
While your idea has some logic, it won't be very effective for cooling the hall and might actually increase your electricity bill.
- Limited Cooling Effect: The cool air from your bedroom AC is limited and pushing it out to the hall with fans might slightly cool the space but won't make a significant temperature difference.
- Inefficiency: Fans will continuously work, consuming electricity without efficiently cooling the hall.
- AC Strain: Your bedroom AC will work harder to maintain cool air, leading to higher energy consumption and bills.
- Alternative Solutions:
- Portable AC Unit: More efficient for cooling the hall if budget allows.
- Tower Fan: Better airflow circulation than exhaust fans, positioned strategically for effectiveness.
- Air Cooler (Non-Coastal Areas): Cost-effective cooling option if humidity is low.
- Specific Fan Idea: Using exhaust and intake fans wouldn't effectively cool the hall due to limited cool air source and temperature transfer limitations.
Circulating cool air with a tower fan or exploring alternative cooling options like portable AC units or air coolers would be more effective and energy-efficient solutions for cooling the hall.
@@TrekBookIndia thank you sir you patience and long reply 💕
I used inside outside thermometer, its a single device that shows both the temperatures on the same screen. For bringing outside air we just kept the doors and windows open through out the night, allowing to exchange automatically. I fixed mosquito nets at all places which were kept open. It really helped to reduce use of airconditioner.
Perfect 👌👌
Energy saving by any means is help to our nation 🇮🇳 🙏everyone should try such small things
Sir do we have to use the exhaust the whole time the cooler is working, i mean does the exhaust work overnight along with the cooler?
Yes please
It will give you best chilling effects
Thank you for the reply sir. But sir is it safe for the exhaust to work overnight like for 8 hours straight continuously??
I really appreciated you have done a quality research regarding the Exhaust fan ❤
Thank you very much for your appreciation 😊🙏
Namaskar Uncle ji. 4 wing fan or 3 wing fan iron wala lu. confused hu. Plastic wala sahi ya iron wala and which brand. Mera room 12*20 hai and only windows hai.
4 wings plastic fan is good since it throws more air and makes less noise compared to the metal fan
I have tried both metal and plastic
Check for product link in video description, it's the same fan I am using... You can go for same brand bigger size fan
Consider a case where the room has 2 windows one is small and one is large 2x.
Now outside is 25c and inside is 30
So should we put a big exhaust for the inlet or a big exhaust for the outlet ? Or other way?
The question I want to understand is should we blow out the hot air more or should we take in cold air more.
I hope u can get my question
You've got the right idea! In your scenario, to cool the room most effectively using an exhaust fan, you'll want a larger exhaust fan for the outlet (blowing hot air out) and a smaller inlet (drawing cool air in). Here's why:
- Hot Air Rises: Hot air naturally rises within a room.
- Pressure Differential: By creating a stronger exhaust at the outlet, you'll create a lower air pressure inside the room compared to the outside. This pressure difference will draw cooler air from outside through the smaller inlet.
Thinking about airflow:
Imagine the exhaust fan as a giant vacuum cleaner sucking out hot air. A larger outlet fan will create a stronger "suck" which will pull in more cool air through the smaller inlet, creating a more effective circulation of cooler air.
We appreciate your effort sir, it was really helpful, Thankyou!
You are most welcome 😊🙏
And thank you so much for your appreciation 😊
Sir, do we have to keep the exhaust on all night along with the cooler??
Yes please
Sir which exhaust should I buy?
@@roseflower5636 links are given in the video description
Shed room me laga sakte hai kya ??
Shed बोले तो पत्रा है क्या
Fantastic video. great efforts. keep it up, this nation needs you---.
Thank you so much for your appreciation 😊🙏
Please share exhaust fan model.
Anchor by Panasonic Plastic Kool Air - 250mm Ventilation Fan |Exhaust Fan for Home, Office, Kitchen and Bathroom (White)
Buy on Amazon amzn.to/3TwErb6
Buy on Flipkart mdeal.in/c_nL4Sm
Sir I have no windows in my room so will this experiment work ?
It will work however you need to provide some place to get the air out from the room
If you have a bathroom attached to the bedroom and has an exhaust fan, keep the door open and run it , to send out the hot air. In addition, you can attach an exhaust fan to the window opening to bring in fresh, cool air thro' bedroom windows - it will immediately start chilling the room. Spraying water in the room with an empty Colin Spray bottle will further bring down the temperature
👍 Only issue you might have to face is smell...
i thought i was the only one obsessed with ventilation
good to see it
Thank you so much ... we think alike 🙂
If you have thought of more such ideas please let me know . and I will try them as the time permits ..
Very fantastic camera man as well😀
Thank you very much for your appreciation, 😊🙏
The exhaust fan creates negative pressure inside and it is sufficient to pull the cool air from outside from the windows. So another inlet fan to let the air inside is required?
The factors influencing the choice include room size, window size, window placement, and the number of windows.
This can be assessed through either expensive CFD analysis or practical experimentation with single or multiple fans.
If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
No, what I am asking is exhaust fan is sufficient or both exhaust and inlet fans are required
@@NagarajKS-eq3fp
In my case the bedroom is 10 x 10 and I am happy with single fan...
So it depends...
And I am using it to blow air from outside to inside to create positive pressure... I have tried to use it in reverse way to create negative pressure however effectiveness was very less
Sir what is the name of your small white fan
amzn.to/43Lwpj5
I am using this model
Hi sir,Im one of your new subscriber.Its a good experiment video.Sir, is this experiment controls (or) maintains humidity also na sir??
It can't control humidity, but surely will not reduce it...
Like when you use AC then humidity in room reduces too much since AC pulls out moisture from air... Here fan continuously pushes fresh air inside room so will not reduce humidity
@@TrekBookIndia ok sir thank you.I understood.🙂
This seems so cool. Thanks so much for sharing. It's a good setup for times when your running a cooler at home at night.
You are most welcome 😊🙏
Very good experiment.. Just wanted to know,
will it not help better to reduce temperature, running fan in opposite direction due to passive cooling ( Thermodynamics)
I tried that...
Problem is that room temperature is high and outside temperature is low, so we are driving hot air out from room, but then since the bedroom is big it's unable to cool the room effectively.
Also having fan driving air inside brings low temperature air (almost 5 deg low) directly on bed which creates comfort while sleeping.
These are practical observations... Being a mechanical engineer and worked so many years in R&D I have always experienced difference in theory and actual feel.... I am not sure if I am able to convey you... But for me the inward direction worked good 😊🙋
I appreciate your scientific approach.
@@nitinsharma3934 thank you so much for your appreciation and support 😊🙏
Hi Sir, how long the exhaust fan can run continuously. Can we run it for continuous 8 hours ?
Yes, no worries 👍
@@TrekBookIndia Thank you Sir 😊
Sir do u switch on ceiling fan along with exhaust fan.
Yes
Sir, what is the difference,if we don't close the windows with closing barriers??
@@subrahmanyaprasada5201 didn't get your query 🤔
sir which company is providing ventilation systems for new homes
Mostly India is not that keen on home ventilation so generally local companies does such jobs... Like mostly in areas like jaipur and udaipur you get local companies installing home ventilation systems
@@TrekBookIndia can you pls suggest me any company
Having ceiling exhaust rather than on the window will improve the cooling effectiveness and if you pair it with a pedestal fan blowing air from outside to the middle of the room in the evening makes the room very cool for good nights sleep 🙂
Yes, perfect 👍
Nice work sir just awesome, happy to see hardwork u did to show and make us clear how it actually works huge respect sir 🤗♥️
Thank you very much for your appreciation and support 😊🙏
@@TrekBookIndia its my pleasure sir 🙏
Sir what will be the perfect exhaust fan for 150 sq ft room.Both for blowing air out and air in..what is the air delivery or rpm needed?please help
While I read your question I have exhaust fan working on window of my bedroom 😊
Anyway.. 150 sq feet is big room, so better to have 12" fan...
Also it's important to know from which city you are, since mostly in coastal areas this idea won't work
@@TrekBookIndia i am from kolkata sir.And mostly on amazon flipkart i find air delivery is given 600-700m3/hr..which one should i choose?
@@supriyobandyopadhyay6041 choose with highest possible delivery
@@TrekBookIndia thank you sir.sir what will happen if instead of blowing air in and out both,i blow air out only?will air automatically blow inside?And if i have to install one,which one is better?blowing air in or blowing air out?
await your kind reply sir
Awesome experiment and great explanation! This is what I was looking for and trying to implement!
I am happy that you liked the experiment... Hope it will save energy and money for you 😊🙏
Very nice.. but why not in day time?
Daytime temperature inside the room is lower than outside atmosphere, so it will increase room temperature if we run exhaust fan
Thank you sir for the research and results shared … Very nicely explained!!!
You are most welcome 😊🙏
How to fix it sir..as many windows are having mosquito mesh
मेरे घर मे मैने विंडोमेश के बाहर से बिठाया है बाहर ग्रील है वो ग्रील के ऊपर बिठाया मैने
I want to buy table fan can i put it near to window in night instead of buying exhaust fan and will it replace need of exhaust fan by pulling air from outside to room. @pune.
It works, but you need to locate it very near to window or best to put inside grill of window. One of my friend in Baner has put table fan from outside window since he has access from balcony and it is working well 👍
If you like the content of my channel please do subscribe since I get only 100 subscribers per month 😅
@@TrekBookIndia thanks for quick reply. And i like your videos because they are detail oriented.
Definitely I will use this trick and thank you so much for making this video.
You are most welcome 🙏
Just for info that I am still using this even in month of May
I think this year in total I have used my AC only 3-4 times when it was extremely hot, rest time I used exhaust fan 💪😊
@@TrekBookIndia that's great. But I don't think we can use it in the month of May and June in Odisha.
@@TrekBookIndia I like your experiment it's just awesome.
@@ShiningStarOfficialChannel thank you... Actually this experiment was in my mind since years, but due to the job I couldn't do it. As soon as signed off from my job I got time to do such things 😊💫
@@ShiningStarOfficialChannel Agree,,,, since I stay in Pune .. even in summer the temperatures are not that high .. so here its quite possible ..
Thank you for such kind of video.. 🙏🙏🙏🙏🙏
You are most welcome 😊🙏 I am really happy that you liked the video
Very well made. Kudos.
Thank you very much for your appreciation 😊🙏
Very good experiment, thanks for the great work. This experiment will be really helpful for those who can't afford AC and it will help mother nature too. As Celling fans using the same air in the room it increases room temperature and CO2 level also get increased over the night. So here the important thing is we need to expel the air inside the room.
I am proposing like we can make two exhaust holes on top both corners of the room the hole size as like in kitchen. We can use two exhaust fans one for fresh air inlet and another for outlet, so that we can ensure the same exhaust air not circulated back through inlet fan, here the distance between the two fans are important. So, the main advantage of using the exhaust fan we will get fresh air all the time. We can cover the holes outside with mosquito net to avoid mosquito and insects and we can use steel grills for safety purpose.
Sometimes the inlet air drawn by 9 inch exhaust fan many not be sufficient. In that case, we can use only one exhaust fan to expel the air outside and we can keep another hole open, so that as usual by using our regular celling fan we will get fresh forced air inside through the inlet hole. As per law of equilibrium once we expel the air from room automatically the fresh air will get inside the room to fill the vaccum created by the exhaust fan.
If you think this idea has some sense, I Kindly request you to carry out experiment on this and post the results. Thank you.
Thank you very much for sharing your ideas in great details...
Surely I will try it next summer ... 😊🙋
Sir what if the windows are opened, doesn't it cool the room much effectively, without the exhaust?!!!
Opening windows is a great natural cooling strategy, especially at night when outdoor temperatures are cooler. If you can create a good cross-breeze, you might not even need an exhaust fan. However, exhaust fans can be a helpful addition in some situations, such as removing hot air pockets or managing humidity.
if you like my channel then do subscribe since I get only 100 subscribers per month !!!
@@TrekBookIndia already subscribed 👍
Your experiment is helpful.
I am happy that it helped you 😊🙏
Sir, please make a video in which you can tell us about the effectiveness of exhaust fan concept with air cooler in bad summer days. This will help a lot. And sir please tell about the paint that you mentioned . Thanks in advance.
Here are options available in market for Solar Heat Reflective Roof coating
EXCEL CoolCoat (20 liters for @ pack)
Buy on Amazon amzn.to/2d2jbIX
Buy on Flipkart mdeal.in/c_SA7a6
OzoProtect KR - 100% acrylic polymer based concrete roof/terrace coating
Buy on Amazon amzn.to/2dFeQwT
Buy on Flipkart Not available as on now
StarShield Solar Reflective & Insulating - Certified by GRIHA Council, US Green Building Council & Indian Green Building Council
Buy on Amazon amzn.to/2e7zVPZ
Buy on Flipkart mdeal.in/c_ggVr0
Allied Koolmax
Buy on Amazon amzn.to/2dFeNRM
Buy on Flipkart mdeal.in/c_hz4NB
Here are options available in market for Solar Heat Reflective Roof coating
EXCEL CoolCoat (20 liters for @ pack)
Buy on Amazon amzn.to/2d2jbIX
Buy on Flipkart mdeal.in/c_SA7a6
OzoProtect KR - 100% acrylic polymer based concrete roof/terrace coating
Buy on Amazon amzn.to/2dFeQwT
Buy on Flipkart Not available as on now
StarShield Solar Reflective & Insulating - Certified by GRIHA Council, US Green Building Council & Indian Green Building Council
Buy on Amazon amzn.to/2e7zVPZ
Buy on Flipkart mdeal.in/c_ggVr0
Allied Koolmax
Buy on Amazon amzn.to/2dFeNRM
Buy on Flipkart mdeal.in/c_hz4NB
Also using exhaust fan along with air cooler will surely help by controlling the humidity of air (I mean keeping the air dry)
@@TrekBookIndia Sir have you done heat resistance paint on your roof and how is th result.
@@deepakchhokar16 I have still not done it, but my friends father who stays in Jalgaon have done it and it's really effective to reflect heat 👍
Excellent sir, U r genius sir
Thank you very much, 😊🙏
you are pulling air in.will it be better if i pull air out?
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Pulling hot air out of a room with an exhaust fan won't be as effective for cooling as pulling cold air in at night.
There are a few reasons for this:
1. Temperature Difference:
Cold air naturally wants to move to warm areas to equalize temperatures. This creates a pressure difference that helps draw more cold air into the room when you extract hot air. In contrast, hot air doesn't have the same natural tendency to move towards cooler areas. As a result, simply extracting hot air might not create enough suction to draw in significant amounts of fresh, cool air, especially if the temperature difference between inside and outside isn't substantial.
2. Airtightness:
Unless your room is perfectly airtight, pulling hot air out creates a slight vacuum that draws air from any available opening, including cracks, gaps, and vents. This can pull in warm air from other parts of the house, negating the cooling effect. Pulling cold air in at night minimizes this issue as the colder outside air is naturally drawn in to replace the extracted warm air.
3. Replacement Air:
Regardless of the method, cooling a room depends on replacing warm air with cooler air. Even with perfect airtightness, extracting hot air only creates a void; it doesn't actively bring in cool air. For effective cooling, you need a source of cool air to replace the extracted hot air. This is more easily achieved by pulling in cold air directly than relying on natural pressure differences that may not be strong enough.
Additional factors:
* Fan power:
A more powerful fan might improve the effectiveness of extracting hot air, but ensure it doesn't create excessive noise or drafts.
* Humidity:
If the outside air is humid, pulling it in might not feel as cool due to the increased moisture content.
* Airflow direction:
Consider positioning the fan strategically to create a specific airflow path that draws in cool air from a desired location.
While extracting hot air can contribute to some cooling, it's generally less effective than directly pulling in cool air, especially if the temperature difference is significant. Combining this method with other cooling strategies like cross-ventilation, using fans strategically, and minimizing heat sources within the room might offer better results.
That's why purane deno ke ghar mai ventilator reheta tha taki celling fan baharka hawa andar khiche...ek doubt hai is experiment Mai celling fan agar chalega to is chotese exhaust fan ka hawa utna useful nehi hoga sayad.. celling fan ka hawa celling se niche ki taraf ake khirse bhar janeki kosis karega tab exhaust ka hawa resist hoga..agar exhaust fan celling fan ka jo rod hai us distance Mai kisi bhi wall Mai laga hua hoga to cool air or jaldi andar ayega..but apke effect ke lie ek like to banta hai
Exhaust fan plus ceiling fan also works better
what about in winters?
🤔 Winters you can use oil fin heater, I have posted separate video
ua-cam.com/video/2xyWQRu48lg/v-deo.html
Please link best 2 way exhaust fan
amzn.to/3VqBb3h Crompton Metal Trans Air Reversible 9-Inch Exhaust Fan
this is the only branded fan in reversible mode available .. which is costly .. instead buying this better to buy 2 fans separately in the same price and fit as you desire ..
Sir great video... I have a question and if you can answer it that will be great. In my room there is only one window and there is nothing else for the ventilation apart from that window... I keep the door closed most of the time... I was thinking of adding a ventilation fan on top of the window and attaching another small fan on the lower side of the same window to bring in fresh air... Will this help in cooling down the room?
It depends upon how tall your window is - if it is quite tall ... say 6 feet or so .. then adding 2 fans might help ...
But if the window is small then adding 2 fans will not help
Perfect case study 🎉
Thank you very much for your appreciation and support 😊🙏
apne kya ghar me ventilator lagaya h?
नाहि
@@TrekBookIndia agar ghar me AC lagaye to ventilator na lagane se chalega?
@@souveekroy4514 yes
u can use bathroom fan ceiling mount in corner with pipe outlet outside.
Thank you for your suggestion .. as on now I am still using the temporary arrangement done at the time of experiment and it is working well .. so I will do in proper way soon 🙂
I have also don some experiment.... So i would say u should fix the exhaust fan up of your window coz hot air is more liter then the cold ❄ air weight... Hot 🔥 air alway go upside nd cold ❄ air down side coz cold air is very dance... I will work effectively more if u fix in ventilator.
Yes.. I have tried different locations... And although this location is technically wrong, practically it throws cold air directly on the bed giving comfortable sleep and hence finalize 😊🙋
Room ke baahar se install kar sakte hai kya
हा रूम के बाहर से इन्स्टॉल कर सकते है
@@TrekBookIndia Thanks for reply 🙏
Cool air ka direction se bhi affect padta hai kya...ye placement kis direction me karna chahiye...E, W, N or S kindly brief
@@mradulrajpoot5935 You're absolutely right! The direction of cool air from an air cooler can be affected by its placement. Here's why and how to optimize it:
Air coolers work on the principle of evaporative cooling. They draw in hot air, pass it through water-soaked cooling pads, and then blow out the cooler, moisture-laden air.
Placement for Optimal Cooling:
- Ideally, position your air cooler in front of a window or open area that faces the prevailing wind direction. This allows for a fresh supply of hot air to be drawn in and cool air to be expelled efficiently.
- If there's no prevailing wind, prioritize placing the cooler:
- North facing window in summer: In the Northern Hemisphere (including India), during summers, southerly winds are common. North placement allows hot air intake and cool air expulsion.
- South facing window in winter (if applicable): South-facing windows receive more sunlight in winters, which can help raise the room temperature slightly. However, prioritize proper ventilation throughout the year.
14 x14 ke room me kitne inch ka Khaitan me le..pls guide
Sir if it's a bigger room or hall can we try with two or three exhaust fans placed one after the other? Will it provide btr cooling? Bionaire twin window fan is it worth? Can you please look at the product n comment?
1) For bigger room or hall, it will be worth using multiple fans, as shown in my video - to start with you can start with 1 exhaust fan to drive air inside from one side of room, and use second fan to take the heat out (exhaust mode) - if that gives you some relief, then you can use 2 fans for inlet and 2 fans for outlet
2) Bionaire twin window fan if you are taking about this product amzn.to/3CZOAEv then it is not worth in my opinion, instead go for multiple exhaust fans like amzn.to/3IuPwlj this will be cheaper solution
@@TrekBookIndia sir my bigger room opens to a balcony..this balcony s cooler than my room..i ve two windows in my room which opens to balcony..can I use a pedestal fan or something in the balcony , facing my room window..ll it work btr than exhaust fan?
@@swamiv330 pedestal fan will not work better than exhaust fan due to the fact that they both are designed for different purposes... Blade designs differ.
But if you anyway have pedestal fan at home, then surely you can try it - but don't buy new pedestal fan for this purpose, it's costly than exhaust fan and will not be that effective 🙃🙋
@@TrekBookIndia thanks for your quick response !! Do u think applying reflective paint helps feeling cooler in nite time? Or is it only a daytime cooling effect? Which brand u prefer? Excelcoat or luminX?
@@swamiv330 yes, for sure reflective paint help.
About brand I need to check with my friends in Jalgaon since they do this countermeasure.
Plz allow me some time since right now I am on Uttarakhand trip 🙏
What will happen if I use air cooler as exhaust that bring air inside while using exhaust that throw air outside on the same wall as air cooler?? Sir I am eager to know =)
Air cooler efficiency will be higher in case you use exhaust fan to force air out from the room 👍
The exhaust fan experiment was efficient during the day but I will say it was quite inefficient during the night.
I will say a more efficient setup during the night would have been to keep all the windows open and putting another exhaust fan on the opposite end of the room to trigger airflow this way cooling at night would be much more efficient and the room would cool to the outside temperature by the next morning.
This I have tried... Believe me it won't work...
Finally I am able to live without AC this summer with thus setup... Only thing is I live in pune where temperature outside drops surely at midnight... 🙋
Being worked in R&D over 30 years I have learned that many things ghat we assume based on theory do not work out practically... Similarly here practically what works that I have shown 🙏
@@TrekBookIndia Ok then
sir means is it fitting exhaust fan in reverse
Yes
Interesting, liked how detailed the video was.
Thank you very much for your appreciation 😊🙏
Nice initiative, towards environment
Thank you very much for your appreciation 😊🙏