DIY Indirect Evap Cooler! AC Air Cooling! (w/No Added Humidity!) cool and dry air!
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- Опубліковано 13 чер 2021
- Simple Indirect Evap. Cooling! AC Air Cooler That Produces Dry Air! ...hi all... this is a partial section cut from a (longer) video that i posted earlier in the year. it's a quick-view of my prototype Indirect Evap AIr Cooler. *lot's of people have wanted me to make an indirect evap. cooler (for years now). since it's now blazing hot outside i'm reposting part of the longer video that i made on the topic (to make sure that all who want to see it know it's posted and can see it now! its about 100F today (38C) and it's cranking out the cool air 69-71F. (21C). for tons of extra details make sure to read the description section of the longer build video. link to full-length "build" video is listed below. second half of that video is the builds - first half is this video.
link to the longer full video (builds are in second half)
• DIY "Indirect" Evap Ai...
links to some of my related vids...
My "BLUE CUBE" evap. videos...
this one is to the taller version • DIY Evap Air Cooler! ...
this one is to the shorter version • DIY Evap Air Cooler! B...
My "HEAT EXCHANGER" videos (used for cooling)
my original ice-based air cooler • DIY Air Cooler! AC Air...
my updated ice-based air cooler • DIY Air Cooler! - AC A...
mix/extra footage video on the ice-based air cooler • DIY Air Cooler! - Chil...
My "HEAT EXCHANGER" videos (used for heating)
my 12x12 heat exchanger as an air heater • DIY Air Heater! "Hot W...
my 8x8 heat exchanger w/solar thermal copper coil • DIY Solar Air Heater! ...
my 8x8 hot water heat exchanger (air heater) • DIY Air Heater! The "H...
my 8x8 heat exchanger air heater (AC powered design) • DIY Air Heater! Heat A...
how to run any of my DC projects on AC power • How to use AC power to... - Наука та технологія
Dude your killing me! Great Idea! This is just small scale. Imagine a build 10 times the size. Very cost effective. Exchange of heat is dirt cheap. I like it. I may mod this to a Geothermal build.
That is a really interesting combination!
You can add one pad below the fan in the mini cooling tower to act as drift eliminator. It will reduce water loss and the moisture out of the system.
DIY air conditionner, nice piece of engineering.
Thank you for your videos , you are so informative and helpful
hi. nice of you to say 🤟👍
Love love your vids. So awesome...
Thanks very much!!
Thanks for not being just another block-of-ice-and-a-fan video. I had to search a while to find this, which is the technology some manufacturer should be offering us. Can't understand why they refuse. I'd buy it but don't feel up to building it.
Hi I'm in Australia there is a manufacturing company Seeley international they make a evaporative cooler with this principle there called indirect evaporative coolers products name (Climate wizard) there's different sizes but the heat exchanger from diagrams I've seen doesn't really show a cooling pipe radiator setup.
A large esky to keep chilled water cooler .
Climate wizard state's the hotter outside air is the colder water temp will be.
The temperature of the water from the evaporative cooler is limited to the wet-bulb temperature of the outside air. When I lived in CA, humidities and thus wet bulb temperatures were low and evaporative coolers worked very well. After moving to TN, the wet bulb temperatures are usually about 70 deg. F or higher in the summer, so the evaporative cooler cannot cool the air of the water to less than this, significantly limiting the cooling that can be obtained using a direct or indirect evaporative cooler. If you are getting air and water temperatures from the evaporative cooler less than 60 deg. F, you must live in a fairly dry area of the country, usually west of the Rocky mountains.
You are so smart. ThankYou ❤for sharing this
hi. thank you and thanks for watching! 🙂
bro don't ever delete your channel or the vids, this is a hidden gem
hi and thank you! i'm glad you like the channel 🙂
Who knew you could use water as a refrigerant! It is certainly environmentally friendly! Maybe not quite as powerful as all the high pressure "R" refrigerants, but far less complex and dangerous. It holds it's own, in this application, for sure. Great job.
Perhaps a revisit and integration of your previous Zeer Clay pot refrigerators with this heat exchanger?....
I wish I could just apprentice myself to you for a month.
I think the neigbours will love your setup....
Brilliant idea , esky for chilled water tub , cooling pipe foam insulation keep water pipes cool.
Had similar idea years ago after feeling how cold evaporative cooler water got down too.
I'm thinking using my evaporative cooler on roof as water cooling source, add water pipes plumb to a insulated heat exchanger (same as ac duct unit) attach it inline of ducted heating system which can be used in fan only mode , so it will be reverse cycled.
The ducted evaporative unit I'd let the air coming out unit dropper duct blow thought out roof cavity to keep it cooler as I'd say on a hot Australian summers day 40°C roof cavity would be 80°C.
thats genius! thank you alot :)
absolutely, i'm glad you like it!
That is amazing..brilliant
Many thanks!
great design. I'm gathering up the materials to build this now. Great way to cool. I can not find the heat exchanger like this one. I like the one you use. Link?
I have watched his videos before, I do not have the link but am pretty sure I found the heat exchanger on Amazon. Hope that helps.
hi there and thanks! awesome that you're building it! heat exchangers seem to be a hit or miss thing when it comes to whether they have it in stock. here is a link to 3 pages of them! badger-pipe.com/collections/water-to-air-heat-exchanger i usually get ones from this company (but i usually get them on amazon because they (amazon) often sell them cheaper). if you can't find the 8x8 one they also have 12x12 and even 6x12. i just saw those 2 sizes on amazon yesterday (not sure who makes those 2 but those 2 sizes are close to the same size). one tip to finding them on amazon is to click on a couple of larger sizes first, and then look in the related area. that's how i usually find them. if i just put in 8x8 it often doesn't show them.
Hello mate,
Love your work. I've been thinking of doing something similar for my workshop and while researching the concept, I came across your video.
You're getting some crazy efficiency out of that system. Typically you only see 10 degrees Celsius Td across Cooling Tower Water Temps (depending on climate zone) so 15oC Td is pretty damn good.
So I can work out the kW Cooling of your system, are you able to let me know the details of your 'AC Cooler' Fan? Even if it's just Fan Diameter and the number of blades, I can rough in an estimate. I have calculated my system at 6.7kWc, so if I run the math on your system and it's close, it should mean I've done the math right on mine.
Fantastic idea. Thank you for sharing. I was unaware of the water was so cool. I wonder if the humid cool air could be used in some useful way as well, maybe like connected to the Attic
hi there and thanks!. you sure can. my ideas are you can either blow it towards the solar panels so they run as efficiently as they can or you could blow the air back onto the pipes that go in and out of the house. that would help keep the water cool. (that actually makes it a 2 stage evap cooler, because you're cooling a part of the heat exchanger if you do that). the attic is an idea too or just blow the air out into an area - say if you have a deck or a picnic table. you could put the table near the cool air.
You don't want to add humidity to the Attic. I know it is desirable to cool the attic but not with a humid source. If you had a greenhouse, it could be used to cool that.
This is my favorite one of the videos you have on this. What is the average relative humidity where you live and what is the humidity in your house? The reason I'm asking is because cooling a space with high humidity makes it cooler but the humidity still makes it unpleasant, .I'm thinking /planning on building one that I can run through my central air unit but only use the fan/blower, that way it will go through the whole house, I don't know if it will burn the blower motor up pulling the air through the heat exchanger/radiator or not, it will require a lot longer hoses to do it that way, I don't know if that's a good idea or not.
hi. humidity in my area is typically 15 to 25% (but can be as low as 3 to 6%). recently it was 70%. yikes, that's too high for me
Hey this is great, thanks for sharing. I am building a very similar system and had a few questions:
1. Have you considered adding a 3rd stage, involving a liquid-liquid heat exchanger where the cold water cools something like mineral oil or glycol, which is then sent to the liquid-air exchanger instead of water directly from the evaporator? I know that large places with industrial cooling towers use banks of “glycol” batteries to build up inventory of chilled coolant during off-peak as a load balancing technique.
2. Have you considered a method to recover the cool/humid air exhausted out of the evaporator? If I go with a 3rd stage like mentioned above I may choose to pass the warmed coolant return through a liquid-air heat exchanger positioned above the evaporator exhaust, theory being to remove a bit of energy before returning to coolant reservoir as a “pre-cooling” stage.
3. If you were to scale up this design, would you choose to go with fewer, higher CFM fans, or multiple evaporators working on a shared volume of water? I’d imagine the latter to be better because you’d likely have greater surface area of cooler pad….
4….which brings me to last question, what are your thoughts on either evaporative media and/or heat exchanger geometry? I have both a transmission cooler and and 1/4 copper tubing coil…I am thinking of ways to increase the turbulence in the liquid-air exchanger, or going with long copper tubes inside an air duct for counter-flow type approach.
Anyways very cool stuff, referenced your videos a few time as I’ve started this project thanks again
hey there, that's a lot of deep and thought provoking questions. i'll have to give it and them some thought before i can answer. i'm glad my video is helping you and good luck with your experiments and designs. keep us posted. i'm working on various upgrades but all in the experimental stage so far
@@desertsun02 I'm following because we'd thought about what it would be like to pre-cool the ambient air by positioning the heat exchanger IN FRONT OF our one-directional (MasterCool style) evaporative cooler. The idea being that the air that comes through the wet pad has already been cooled. Would there be any compounding cooling, by drawing the 80-degree ambient air through the 60-degree heat exchanger, which your example shows drops the air temp to 60-degrees; and THEN through the (60-degree) wet pad, and then into the home? I"m thinking then that protecting the heat exchanger from dust and debris would be key to the whole setup. What do you think?
I'm not sure how well this would work where I live. The humidity around here is 50-60% most of the time. But for areas with much lower ambient humidity I'm sure it works awesome.
This is to cool I've been following for a bit but now I think I'm finally going to attempt a build my ac alone is just not keeping up with this summer heat. And quick question Would making the pads taller to allow more time for water to travel through the air making for a greater cooling temp
i say go for it! - it's easy to do!. you could make a taller version of the blue cube cooler. it wouldn't hurt - and would help if you use a larger heat exchanger. make sure to watch my taller version video of it. (link in description) 👍
I've got another question : Can you explain in more detail how you configure this unit when you deploy it into action.
For instance I have about 400 square feet with my kitchen and front room and I live in the desert southwest where the summers can be brutally humid.
I do have a rooftop evap and ac and I want to save on energy bills and with your help on this I might just be able to accomplish and build some of your innovative creations in an effort to help me save on my utilities. Please feel free to elaborate in more detail about maybe showing a diagram of a hypothetical front room that I have described to you.
Please have patience with my question as it takes me a little longer to learn but once I've got the info I can proceed with accomplishing the build mission and actually deploying it into action and I'll be able to help friends and family do the same.
Thanks for this great vid, I'm in the process of building mine right now :) . Just want to double check the wiring - you just wired the pump and the fan in parallel? That's it? Seems so simple!
awesome! i'm glad you're setting up a system.
Great project 👍 thanks...
I want to share this idea with you and I would love to hear what do think about it. What do you think about attaching the heat exchanger and the fan with a freezer that is filled with anti-freeze kept at zero degrees Celsius.
The idea is the freezer act as the coolent and energy storage unit. Which saves buying batteries as energy storage.
I did some math.
1 pound of ice 144 BTU
500 litre freezer chest with 400 litres of ice
Stores 882 pounds 127,008BTU
Freezer electricity consumption is around
290 watts per hour around 2500 BTU.
If the freezer is full of ice (400LITRES) we can use up to 2500BTU (by controlling the liquid flow rate or fan speed) without reducing the stored energy. In theory.
Freezer with full storage with power off will produce 8000 btu for 15 hours or less.
The idea is to have very small AC unit which is not available in the market. Also the freezer will serve as energy storage unit. In addition to with adjustment you can still use some part of the freezer as normal freezer.
Best regards
You are a genius. Do you have a product list with links to amazon or something?
hi. the links to the fans and heat exchangers change all the time so the best way to get them is an amazon search. for a lot more detail make sure to watch the longer video and read that description section. it's got lots stats and extras on the whole deal. here's a good link to some heat exchangers (3 pages of them) badger-pipe.com/collections/water-to-air-heat-exchanger. here's a link to a similar fan. max cfm 1730! www.amazon.com/DNA-Motoring-Performace-Electric-Radiator/dp/B01NB0LK0D/ref=sr_1_4?dchild=1&keywords=7%2Binch%2Bcar%2Bradiator%2Bfan&qid=1622901769&s=automotive&sr=1-4&th=1
Loving it
Will implement that in an off-Grid Vipassana Retreat
Do you recon the humid air is too moist for indoors?
We have similar Arid Climate in South Australia
And how much water is this using roughly?
There is a bit shortage here in summer
And do you think, that you could chick the Heat exchanger in line with the moist air on the box.. to increase the cooling effect and make a more compact unit
Highly appreciate your work man
hi there. you could use the humid air indoors (just have to vent properly). but it defeats the purpose of using a heat exchanger. with some ingenuity you could probably use the humid air to help cool the unit down further, the unit uses about a gallon an hour in my climate (but will depend on how fast water evaporates in your area)
What if you made it just one pump that loops the water first through your dry air heat exchanger and then up to the top of the evaporator? Warmer water can lose more heat quicker!
Also you could add a heat exchanger on the damp air outlet to recover more cooling before it's wasted.
Newb question, if my fan is rated at 6.6 amps, and water pump rates at 1.5 amps. Do I need to worry about blowing the water pump since it is less amps? (Both are 12VDC).
FYI
I also have 3 100watt solar panels. So I can hook them up either in series or parallel to increase amperage if needed. And I’m attempting to do this with no solar controller or battery like u did (I have a 80w fan and 20w water pump).
I have everything built except for wiring. Thanks so much for the inspiration!
hi there. if you've got 3 12v 100w solar panels then you are set!. just hook the panels in parallel (like i do). that way the voltage doesn't increase. the items like the fan and the water pump just pull the amps that they need. the water pump will not blow.
Hi I have a question. Is it possible to use just 1 pump? Example, pump connects to the radiator first then it would connect to the intake of the evap and loop like that?
hi there. that would be pretty tricky. you might have issues with the water not moving at the right speed thru the units or with the right force. if you try it - let us know how it worked 👍
That might keep someone from getting a heat stroke this summer, some states are in drought conditions.
Forgive my ignorance, but what is the fiber mat material you are using? When I was a kid in the 60's, the swamp coolers used some type of natural fiber. Thanx.
hi. it's just a standard evap cooler pad (the material it's made of is foamed polyester). most home stores sell the pads.🙂
@@desertsun02 Thanx. Need a swamp cooler in my garage and plan to build one with a 20 inch box fan per your video.
Could you size this system where your water would last 24h
How much money do the solar panels actually cost though?
hi there. these days you can pick up a good 12v 100w one for about 75 or 80 dollars (amazon). since they last 20 or 30 years a used one is a possibility too. if you're on a tight budget i've seen some used for dirt cheap.
If I can concentrate breeze instead of using a fan would it be energy-free?
sounds like an idea. the pump uses power too (not much though).
I can not find a 1500cfm duct fan anywhere, highest is 800, where did you get yours and what diameter is it?
hi there. i got it on amazon. it's a 7" fan. but no worries - they're out there 🙂 remember to add in the term high performance to your search. that should help you find them fast. i just found 3 on a search of amazon (well 2 that are 1730 cfm and one that is 1350cfm). all 7 inch ones. here's two links (first link is to one that is 1730 cfm and second link is to one that is 1350 cfm)
www.amazon.com/DNA-Motoring-Performace-Electric-Radiator/dp/B01NB0LK0D/ref=sr_1_4?dchild=1&keywords=7%2Binch%2Bcar%2Bradiator%2Bfan&qid=1622901769&s=automotive&sr=1-4&th=1
www.amazon.com/Universal-Performance-Electric-Radiator-Mounting/dp/B00T3T7IJU/ref=pd_sbs_2/134-1812861-1418214?pd_rd_w=WGghT&pf_rd_p=f8e24c42-8be0-4374-84aa-bb08fd897453&pf_rd_r=500P41BFHZ2D9RXQBYPY&pd_rd_r=7a062239-3171-4181-84a1-55b7da7190b9&pd_rd_wg=TaRBk&pd_rd_i=B00T3T7IJU&psc=1
Always get good education on this channel
🇮🇳🙏🕉🙏🇮🇳
do you get a lot of moisture from the heat exchanger sweating?
hi there. no, i basically get none. pretty dry where i live
건조한 곳에서는 엄청난 효과를 보이네요.
제가 있는 곳은 거의 습도가 40%~50% 어떨지 궁금합니다.
증발 전과 후의 습도는 얼마나 인지 데이터가 있을까요?
hi. if you search for "evap cooling chart" you will find info on output temps that you can expect
Can you do a follow up video with this design ?? I really like this one........
hi. yep. i've got some things 'in the works'
What was the ambient humidity? I would like to guesstrapulate how well something like that might work in the Mississippi Delta.
hi. it was in the 5 - 15% range. to see how well it might work in your climate search for evap cooling chart online. that will give you a good estimate ✔🙂
mind if ask. what kind of cooling pads are you using?
hi there. they're duracool 'foamed polyester' evap pads. i think they're made by 'dial manufacturing'.
Does the water say cool for hours with the swamp cooler out side. 60-70 deg water would be great...shit, it was 92 deg today.
hi. yes, since the water is being cooled by evaporation it (the water) stays very cool.
So is the air coming off the exchanger as cold as the air coming off the blue cube? or is there an efficiency hit?
hi. there is an efficiency hit (so it's a trade off) if you want the (no added humidity) air. it's not much though - just a few degrees
@@desertsun02 Perfect, thats what I needed to understand. I'll build the cube, then build the exchanger and test them out. Currently closing in on 110 in the shade, so I'm happy to be at work where they have A/C lol
@@desertsun02 I'm wondering if putting the cube in a hole in the ground would help it any (when using with the exchanger)? Starting to think of ways to improve my install, and get the most out of it. Once we get past 6:30 pm, it's pretty tolerable, but from noon till then, it's wicked hot out there this year.
hi. i wouldn't put it in the ground. you need a good flow of air through the pads
How did you solve the scaling problem? :)
hi. if you mean the 'lime scale' that builds up on the pads, the only way to get around that is to filter the water. i don't filter the water though, i just change out the pads when they get too much 'hard water' buildup on them.
Keep evap unit inside and force humid air outside the room using duct. You will reach temperature less than 15 C
Can something like this be made to cool the entire house like central air
absolutely! the heat exchangers are very powerful. note they can also be used for heating. *using hot water.
How well has it worked in 115 temps?
hi. it hasn't quite gotten that hot (yet). at 110F i was getting upper 70s. (6% humidity)
i wanna do this for cooling my Pc
Ultimately I want to cool a 40' fifth wheel RV. Nothing about an RV is efficient, windows are terrible, walls are thin, vent caps etc..
hi. you mentioned in another video comment section that you were looking at just going with direct evap cooling and that your air is super dry so just the blue cube or tall blue cube evap would be good for your situation. you'll get max. efficiency and the extra humidity can actually make you feel better if you have super dry air.
@@desertsun02 Absolutely, and yep, sorry I got our conversation sprawled across several of your videos (your videos are awesome!!!) lol, I've settled on the tall blue cube, and if we feel its too humid in the house, I'll build the exchanger and add it on.
one last thing... just remember to vent the unit (when not using the heat exchanger) so any excess humidity escapes and you're 'good to go'
@@desertsun02 Yeah, learned that the hard way with unvented propane fireplace. I bought a 509 stove "mini-me" this spring, and am installing it at the same time I'm putting my gabel roof on, heat shut me down, got all my trusses built and installed, next is sheathing and stove pipe hole, and tar-paper, and finally metal roofing. It's always an adventure
@@desertsun02 Oh, hey, thought you'd enjoy this article on the variants of cooler pads. www.tlcplumbing.com/blog/swamp-cooler-pads/