This is way better than any other tutorial I saw on UA-cam. Because you actually explained what everything does instead of tossing a bunch of random names around and providing no explanation like literally every other vid on UA-cam from crappy teachers. Mechanics are just terrible teachers 😂
Very well explained and easy to understand with the animation. One of the questions I have is how much pressure does compressor have to increase so that refrigerant temperature will be higher than ambient air temperature. Is the compressor equipped with some type regulator that measures outside temperature and compresses the refrigerant so that the temperature is higher than outside air temperature.
Actually the explanation is still incomplete as your question proves it needs to be equipped with some thing which can measure heat temp and that is Thermostat which is important to power on/off to compressor to work as per our Room temperature🌡️for a certain cooling effect set in Thermostat I think.
Expansion of liquid in remote bulb and power element keeps thermostatic expansion valve balanced to maintain flow.het asbsubering sysom exp..ls in ..out..rmote bulb out let..37psi 50°f.rmote bulb 46.7psi 50°fcondeshion areav 37psi .40°f.condesar medals area 37°f40°FINternal euualizercondsar up eexpasuon under diaphrom 37psi expashion top line out line power elment ...expashion spring 9.7psi inlet out mto matic expansion valve with a temperature senstive elemnent also called p""power element replacing the adjustingvvsrew and spring ...
Some things are not explained here. HOW does the expansion valve allow the high temp liquid into low pressure cooled liquid. I presume because it has a small dia. in and a larger dia. pipe out, but this is not said. Also, does it matter if the vapor travels UP the condenser rad whilst turning into liquid? Would gravity not make it want to fall back down? All other animated diagrams I have found show it going down, and that would seem to make more sense. Also, where is your drier?
Question: At compressor startup, does the A coil (inside furnace) make some noise getting up to operating pressure? It lasts for about 15 seconds? Then noise stops. At end of cooling cycle the same thing happens. During the cycle no noise at all, other than normal blower sounds. AC runs great, very cold.
This would not actually be called a furnace but a evaporator coil. What you are hearing is the compressor ramping up pressure. Once the pressure is obtained it does not take as much energy to maintain that pressure so you want hear it as much,
I have a question regarding the wireing. I can´t find an answer anywhere on the internet so i´ll try my luck with you. I have a Toyota Hj60 - 82 and there is a wire coming from the dash leading to the dryer and then on to the compressor. From what i can se it´s not acc so i can´t set a temperature, just on/off. Could you explain the exact way to wire the system from the button to the compressor? Why is the wire running through the dryer, i guess it´s correct but i can´t find a single video on the internet explainng this. Thanks in advance.
thank you ..this is a great tutorial , rather than the others i have watched that dont explain how the compressor works, or why the flans are blowing and what they are blowing for and the main key is the first law of thermodynamics that all ac is based around...that heat flows from hot to cold... if you ever want to improve..the thing that was missing was 1. how does the expansion valve work actually (by what mechanism) 2. the evaportator in the room ....when you go near one they seem to be blowing cold air...but your explanation seems to say they suck in hot air ..(so how come they actually blow cold air) 3 more talk about the air in the room and hte importance of the room being closed or the aircon will be trying to cool down the planet. 4. how the condensor coils actually change the state of the freon from gas to liquid.....i think you said the temperature doesnt change but i think it actually does. the outside environment cools the gas and then it changes to liquid ....by cooling it. 5 more abuot how the changing of state of something from gas to liquid or liquid to gas produces energy
Long story short, it's not worth trying. Short story long, An automotive ac compressor runs off of your engine,whereas a home ac compressor runs off of an electric motor. You would have to find a way to hook up the ac compressor from the "home ac" To where it can be powered off of your cars surpentine belt, Then you've got other issues because automotive ac has cutoff switched that turn a clutch that is actuated by an electromagnet . The "home ac" is simply powered by an electric motor that simply cuts off. Ac in a car is a lott different than ac in a house, They even take different refrigerant. Speaking of which, you would also have to find a way to attach your refrigerant lines to the "home ac" compressor. And im sure im missing a few steps to the process. But it's going to be a lot more work than its worth Nothing is impossible, But this would be more expansive than its worth. Hope this helps.😊
@@kristopherhasenbuhler5393 thank you sir, i was just wondering, because some cars now runs an electric compressor. home AC compressor can be run via inverter i think.
So that when that liquid again comes to the indoor unit it can absorb heat from your room, reach its boiling point and turn into a gas. Now this gas is sent to the outdoor unit and using the variation of pressure again turned into a liquid. The cycle goes on. Hope that helped! :)
@@aditisingh1385 But I need to ask one thing? Why their is no explanation about Thermostat which is very important part of this AC? Thermostat is the one which controls Power On / Off to the compressor. I guess same type working arrangements are done for Refrigerator also am I right?
Dispensing of cold or hot air happens as per the 2nd law of Thermodynamics, which states that Heat flows naturally from an object at Higher Temperature to an object at Lower Temperature. The "Compressor" makes sure that refrigerant fluid flowing to "Condenser" is at a temperature Higher than the outside temperature, which ensures flow of Heat from Condenser to outside temperature as per 2nd law of Thermodynamics, added with a fan which aids in blowing out the Heat from Condenser. The "Expansion Valve" makes sure that refrigerant fluid flowing to "Evaporator" is at a temperature Lower than the inside room temperature, which ensures flow of Heat from inside room to the refrigerant fluid in the Evaporator as per 2nd law of Thermodynamics, added with a fan which aids in blowing in the cool air from Evaporator to room.
I thought, in an expansion system, the freon exits the condenser in liquid, enters the dryer, where moisture is removed from the freon, then traveled to the txv valve?
I have seen videos on ship refrigeration... and comes to an understanding that... 1. Piping before entering compressor consisted of freon gasses. Then it enters the compressor tube, where gasses are returned to its liquid state. 2. When the compressor keeps turning... then the liquid state of the freon... prior to entering the expansion valve, it again turns into gasses, then into the evaporator in the form of gasses... The cycle repeats itself once these gasses reenter the condenser / receiver tube. Did i understand them incorrectly?...
So this is a little simplified. The first place to get an understanding of what is going on is to understand heat energy. Heat energy is measured in temperature, which is a measure of how heat energy affects the molecules of a substance. Quantities of heat energy are measured by measuring how much heat energy is required to raise the temperature of a certain amount of a substance. For example, a BTU is the amount of heat energy required to raise one pound of water one degree in temperature. (I'm American so you're stuck with imperial.) Now we come to the property in the natural world that is exploited to give us the refrigeration cycle that makes air conditioners and refrigerators work, (which both work basically the same, an air conditioner is just something that makes your house a big refrigerator). So if you start with a pound of ice, it takes one BTU to heat it one degree. So for example one BTU to heat it from 31 degrees to 32 degrees. But when you get to the first change in the state of matter, it takes 144 BTUs to change it from a pound of 32-degree (Fahrenheit) ice to 32-degree water. And then you're back to one BTU to heat it from 32 degree water to 33 degree water and so on, all the way until you get to the boiling/condensing point. It's one BTU to heat the pound of water from 211 degrees to 212 degrees. And then it takes 970 BTUs to heat the pound of water from 212 degree (Fahrenheit) water to 212 degree steam (or "vapor"). This is a quality that works against us when we're trying to boil a pot of water and the heat source is a stove you have to power. But it's a quality that works for us when the heat boiling your liquid, (i.e. the refrigerant in the evaporator coil), is the heat in the air of your house, and you want the refrigerant vapor to carry large amounts of heat energy with it outside your home.) (Different refrigerants of course involve different BTU numbers than water, but the principle is the same.) As many of you know the boiling/condensing point of a liquid increases or decreases commensurate with pressure. (A pot of water boils at a lower temperature at a high altitude, i.e. under less atmospheric pressure, than at sea level.) The compressor raises pressure so that the temperature of the boiling/condensing point is higher than that of the air outside, (say a pressure that makes the boiling/condensing point 120 degrees Fahrenheit so that passing 90 degree air outside over the condenser coil will cause the vapor to condense into liquid). On the low pressure side of the system, (where the liquid enters the evaporator coil), the pressure is set so that the liquid will evaporate at a little above freezing. (While you might have a refrigerant that boils at 45 degrees (Fahrenheit) below zero, you have to set it to the boiling/condensing point above the freezing temperature of water or the humidity in the air will cause ice on the evaporator coil.) So you have a system set a two pressures, designed to set two certain boiling/condensing temperatures of the refrigerant. So you have the air in your house being passed over the evaporator coil (made of a conductive metal) so the heat in the air will pass into the refrigerant in the coil and cause it to boil. The heat energy is carried outside with the vapor in your vapor line (the bigger one of your two copper lines) where it is pressurized so that it condenses outside, releasing the heat from inside your home outside. (This is why when your air conditioner is working properly and you hold your hand above the fan of your outside condenser unit, you the air blown by the fan feels warm. That's the heat from inside your house.) Then the condensed refrigerant goes inside your house in the liquid line (the smaller of the two copper lines) where it is boiled again in the evaporator coil, and the cycle continues. And don't forget to occasionally pour some bleach down that white PVC line that comes from your air handler and goes outside. That's the line that carries the water from the air inside your house that condenses on the evaporator coil outside. Have a nice day.
Question: boiling point of coolant is very low, like -30 degrees Celsius. How can it go from vapour to liquid in condenser, if the outside air temperature is way higher than its boiling point?
Because "Compressor" (by increasing pressure) makes sure that the temperature of refrigerant fluid flowing to "Condenser" is higher than outside temperature, hence Heat flows from refrigerant fluid inside the Condenser to outside as per 2nd law of Thermodynamics, causing condensation of refrigerant fluid from vapour to liquid.
Compressor changes gas into liquid and increases the temperature by increasing "pressure". There are 2 ways how you can covert gas into liquid. One by cooling and and the other by increasing the pressure. The game that we are playing in the outdoor unit is with the pressure. Increase the pressure -> keep it in liquid state.
@@ryuzaki6865 How does the condensate drain from roof top AC unit (Compressor, Condenser, expansion valve, and evaporator cooling coils in one unit)? Is it require condensate drain pan to collect water, and drain trap to prevent negative pressure? What if the condensate drain fills up the pan will it spill over into the duct inside the house?
🔥 This is explained as simple as possible than what I learn in Engineering thermodynamics... great work...
This is much better explanation than the other much viewed videos
Your explanation was excellent but my brain still confused as to how air conditioners work.
All tutorials are clearly explained .thank you so much .please continue!!!
Thank you for the clear explanation.
WOW! I went from knowing nothing about AC units to feeling like I’m a pro. Thank you, it was very we’ll explained.
You are now also know how Refrigerator works
Very well done, easy to understand just the basic principles .. impressed !
Easier to understand compared to other tutorials of the same topic. Good job.
This is way better than any other tutorial I saw on UA-cam. Because you actually explained what everything does instead of tossing a bunch of random names around and providing no explanation like literally every other vid on UA-cam from crappy teachers. Mechanics are just terrible teachers 😂
the temp out of the condenser is a bit lower as some heat goes out to the env. . Very well explained good job
Super and most easy explanation in the world.
Now i know, thank you so much for the lecture, it helps me a lot to know the basic functions of an AC.
no, thank YOU! :) that was a great explanation :)
Wonderful exposition of A. C. Mechanism.
Wow! Excellently explained thanks
Very clear english and excellent explanation .thanks madom.
Very well explained and easy to understand with the animation.
One of the questions I have is how much pressure does compressor have to increase so that refrigerant temperature will be higher than ambient air temperature. Is the compressor equipped with some type regulator that measures outside temperature and compresses the refrigerant so that the temperature is higher than outside air temperature.
Actually the explanation is still incomplete as your question proves it needs to be equipped with some thing which can measure heat temp and that is Thermostat which is important to power on/off to compressor to work as per our Room temperature🌡️for a certain cooling effect set in Thermostat I think.
@@irshadahmedsyed HVAC systems will typically have one or more interior air temperature sensors and an ambient (outside) air temperature sensor.
Expansion of liquid in remote bulb and power element keeps thermostatic expansion valve balanced to maintain flow.het asbsubering sysom exp..ls in ..out..rmote bulb out let..37psi 50°f.rmote bulb 46.7psi 50°fcondeshion areav 37psi .40°f.condesar medals area 37°f40°FINternal euualizercondsar up eexpasuon under diaphrom 37psi expashion top line out line power elment ...expashion spring 9.7psi inlet out mto matic expansion valve with a temperature senstive elemnent also called p""power element replacing the adjustingvvsrew and spring ...
Very clear explanation. Thank you.
Woww mam I am from Pakistan and I have a promotion test thanks to u for explaining ac as my desire with easy words
The best video on this topic on UA-cam.
Some things are not explained here. HOW does the expansion valve allow the high temp liquid into low pressure cooled liquid. I presume because it has a small dia. in and a larger dia. pipe out, but this is not said. Also, does it matter if the vapor travels UP the condenser rad whilst turning into liquid? Would gravity not make it want to fall back down? All other animated diagrams I have found show it going down, and that would seem to make more sense. Also, where is your drier?
Much easier explained than I thought...big up
A very fine explanation , I like it
Question: At compressor startup, does the A coil (inside furnace) make some noise getting up to operating pressure? It lasts for about 15 seconds? Then noise stops. At end of cooling cycle the same thing happens. During the cycle no noise at all, other than normal blower sounds. AC runs great, very cold.
This would not actually be called a furnace but a evaporator coil. What you are hearing is the compressor ramping up pressure. Once the pressure is obtained it does not take as much energy to maintain that pressure so you want hear it as much,
Good video good presentation god bless you thanks maam
Very informative! God bless 🙏🏼
It's really ...well for people.
May we get a video about for all of refrigerant ?
I have a question regarding the wireing. I can´t find an answer anywhere on the internet so i´ll try my luck with you. I have a Toyota Hj60 - 82 and there is a wire coming from the dash leading to the dryer and then on to the compressor. From what i can se it´s not acc so i can´t set a temperature, just on/off. Could you explain the exact way to wire the system from the button to the compressor? Why is the wire running through the dryer, i guess it´s correct but i can´t find a single video on the internet explainng this. Thanks in advance.
Explained really well through graphics & Animation but what about the drain pipe?
Thank you for sharing god.bless
I have found ur lecture so intrsting and clear
Dear sister it's a nice video to understand about AC thank you.
Very helpfull video for me 🙏🏻🙏🏻🙏🏻 and everyone
Good, very useful video you present.
Thank you much for understanding me .
thank you ..this is a great tutorial , rather than the others i have watched that dont explain how the compressor works, or why the flans are blowing and what they are blowing for and the main key is the first law of thermodynamics that all ac is based around...that heat flows from hot to cold...
if you ever want to improve..the thing that was missing was
1. how does the expansion valve work actually (by what mechanism)
2. the evaportator in the room ....when you go near one they seem to be blowing cold air...but your explanation seems to say they suck in hot air ..(so how come they actually blow cold air)
3 more talk about the air in the room and hte importance of the room being closed or the aircon will be trying to cool down the planet.
4. how the condensor coils actually change the state of the freon from gas to liquid.....i think you said the temperature doesnt change but i think it actually does.
the outside environment cools the gas and then it changes to liquid ....by cooling it.
5 more abuot how the changing of state of something from gas to liquid or liquid to gas produces energy
helpful and useful comments! thanks
Very well explained, thank you
easy to understand
Nicely explained, thanku so much
Great information , many thanks!😮
Thank You it was very Helpful
Great explanation
Very helpful... thanks for making such videoes🔥❤️
Best explanation ever
Loved the explaination🔥
quick question sir, can a home ac compressor be use on car AC system?
Long story short, it's not worth trying.
Short story long,
An automotive ac compressor runs off of your engine,whereas a home ac compressor runs off of an electric motor.
You would have to find a way to hook up the ac compressor from the "home ac"
To where it can be powered off of your cars surpentine belt,
Then you've got other issues because automotive ac has cutoff switched that turn a clutch that is actuated by an electromagnet .
The "home ac" is simply powered by an electric motor that simply cuts off.
Ac in a car is a lott different than ac in a house,
They even take different refrigerant.
Speaking of which, you would also have to find a way to attach your refrigerant lines to the "home ac" compressor.
And im sure im missing a few steps to the process.
But it's going to be a lot more work than its worth
Nothing is impossible,
But this would be more expansive than its worth.
Hope this helps.😊
@@kristopherhasenbuhler5393 thank you sir, i was just wondering, because some cars now runs an electric compressor. home AC compressor can be run via inverter i think.
Very nice video 📹 🥰
Thanks a lot
It's said ,apart from chilling,mixing process is there,which is also vital.
What about low ambient control values, and accumulators?
Wonderful explaination very helpful to exams
Very informative, lots of love.
Thank you!!
Thanks for sharing ,,,,, I have learnt alot
What is the benefit of changing the state of the freon from gas to liquid?
So that when that liquid again comes to the indoor unit it can absorb heat from your room, reach its boiling point and turn into a gas. Now this gas is sent to the outdoor unit and using the variation of pressure again turned into a liquid. The cycle goes on. Hope that helped! :)
@@aditisingh1385 But I need to ask one thing? Why their is no explanation about Thermostat which is very important part of this AC? Thermostat is the one which controls Power On / Off to the compressor. I guess same type working arrangements are done for Refrigerator also am I right?
Best Explanation
Very nice! I like it!
thank you so much mam its a really helpful info
Tnks for this topic explain
very helpful
מאוד מועיל
did you miss the freon dryer or vapor-liquid separator?
I have a question, how does it dispense the cold or hot air?
Dispensing of cold or hot air happens as per the 2nd law of Thermodynamics, which states that Heat flows naturally from an object at Higher Temperature to an object at Lower Temperature.
The "Compressor" makes sure that refrigerant fluid flowing to "Condenser" is at a temperature Higher than the outside temperature, which ensures flow of Heat from Condenser to outside temperature as per 2nd law of Thermodynamics, added with a fan which aids in blowing out the Heat from Condenser.
The "Expansion Valve" makes sure that refrigerant fluid flowing to "Evaporator" is at a temperature Lower than the inside room temperature, which ensures flow of Heat from inside room to the refrigerant fluid in the Evaporator as per 2nd law of Thermodynamics, added with a fan which aids in blowing in the cool air from Evaporator to room.
Thank u ma'am
Very nice expression
How the liquid state of freon is converted into gaseous State inside the evaporator coil
Because the hot air coming into the evaporator area from the house is heating up the Freon in the pipes causing it to evaporate back into a gas
Cold freon absorbs the heat to change state to turn to Vapour just like if you heat water to make vapor
This is the freon property
Very helpful
I thought, in an expansion system, the freon exits the condenser in liquid, enters the dryer, where moisture is removed from the freon, then traveled to the txv valve?
I thought there's a mistake..
Condensor dicrease the temperature bcz refrigerant changing the state from gaseous to liquid.
I agree that’s the only misleading information
Very interesting!!!!!!
such a clear cut explanation..thanks a lot
Thanks mam
I have seen videos on ship refrigeration... and comes to an understanding that...
1. Piping before entering compressor consisted of freon gasses. Then it enters the compressor tube, where gasses are returned to its liquid state.
2. When the compressor keeps turning... then the liquid state of the freon... prior to entering the expansion valve, it again turns into gasses, then into the evaporator in the form of gasses...
The cycle repeats itself once these gasses reenter the condenser / receiver tube.
Did i understand them incorrectly?...
And thank you for making this video.
very nice
Where does the humidity go? Turns to water and leaves the evaporator chamber? It should be, otherwise air inside the house is not dehumidified!!
Explained really well
Thanks 🙏🏻
Nice
W-e-l-l d-o-n-e !
Good
Very well explained
Super
Love frm india
Thanks
Thank you so much mam
As an HVAC Tech, this is everything and nothing at the same time
Nice 👍🏻
tHank you
So this is a little simplified. The first place to get an understanding of what is going on is to understand heat energy. Heat energy is measured in temperature, which is a measure of how heat energy affects the molecules of a substance. Quantities of heat energy are measured by measuring how much heat energy is required to raise the temperature of a certain amount of a substance. For example, a BTU is the amount of heat energy required to raise one pound of water one degree in temperature. (I'm American so you're stuck with imperial.)
Now we come to the property in the natural world that is exploited to give us the refrigeration cycle that makes air conditioners and refrigerators work, (which both work basically the same, an air conditioner is just something that makes your house a big refrigerator).
So if you start with a pound of ice, it takes one BTU to heat it one degree. So for example one BTU to heat it from 31 degrees to 32 degrees. But when you get to the first change in the state of matter, it takes 144 BTUs to change it from a pound of 32-degree (Fahrenheit) ice to 32-degree water. And then you're back to one BTU to heat it from 32 degree water to 33 degree water and so on, all the way until you get to the boiling/condensing point. It's one BTU to heat the pound of water from 211 degrees to 212 degrees. And then it takes 970 BTUs to heat the pound of water from 212 degree (Fahrenheit) water to 212 degree steam (or "vapor"). This is a quality that works against us when we're trying to boil a pot of water and the heat source is a stove you have to power.
But it's a quality that works for us when the heat boiling your liquid, (i.e. the refrigerant in the evaporator coil), is the heat in the air of your house, and you want the refrigerant vapor to carry large amounts of heat energy with it outside your home.) (Different refrigerants of course involve different BTU numbers than water, but the principle is the same.)
As many of you know the boiling/condensing point of a liquid increases or decreases commensurate with pressure. (A pot of water boils at a lower temperature at a high altitude, i.e. under less atmospheric pressure, than at sea level.)
The compressor raises pressure so that the temperature of the boiling/condensing point is higher than that of the air outside, (say a pressure that makes the boiling/condensing point 120 degrees Fahrenheit so that passing 90 degree air outside over the condenser coil will cause the vapor to condense into liquid).
On the low pressure side of the system, (where the liquid enters the evaporator coil), the pressure is set so that the liquid will evaporate at a little above freezing. (While you might have a refrigerant that boils at 45 degrees (Fahrenheit) below zero, you have to set it to the boiling/condensing point above the freezing temperature of water or the humidity in the air will cause ice on the evaporator coil.)
So you have a system set a two pressures, designed to set two certain boiling/condensing temperatures of the refrigerant. So you have the air in your house being passed over the evaporator coil (made of a conductive metal) so the heat in the air will pass into the refrigerant in the coil and cause it to boil. The heat energy is carried outside with the vapor in your vapor line (the bigger one of your two copper lines) where it is pressurized so that it condenses outside, releasing the heat from inside your home outside. (This is why when your air conditioner is working properly and you hold your hand above the fan of your outside condenser unit, you the air blown by the fan feels warm. That's the heat from inside your house.) Then the condensed refrigerant goes inside your house in the liquid line (the smaller of the two copper lines) where it is boiled again in the evaporator coil, and the cycle continues.
And don't forget to occasionally pour some bleach down that white PVC line that comes from your air handler and goes outside. That's the line that carries the water from the air inside your house that condenses on the evaporator coil outside.
Have a nice day.
thank u
Nice explanation but fast.
Question: boiling point of coolant is very low, like -30 degrees Celsius. How can it go from vapour to liquid in condenser, if the outside air temperature is way higher than its boiling point?
Because "Compressor" (by increasing pressure) makes sure that the temperature of refrigerant fluid flowing to "Condenser" is higher than outside temperature, hence Heat flows from refrigerant fluid inside the Condenser to outside as per 2nd law of Thermodynamics, causing condensation of refrigerant fluid from vapour to liquid.
Compressor changes gas into liquid and increases the temperature by increasing "pressure". There are 2 ways how you can covert gas into liquid. One by cooling and and the other by increasing the pressure. The game that we are playing in the outdoor unit is with the pressure. Increase the pressure -> keep it in liquid state.
@@ryuzaki6865 How does the condensate drain from roof top AC unit (Compressor, Condenser, expansion valve, and evaporator cooling coils in one unit)? Is it require condensate drain pan to collect water, and drain trap to prevent negative pressure? What if the condensate drain fills up the pan will it spill over into the duct inside the house?
cool
Great
Humidity is ALWAYS absorbed by grumpiness...
The 27 th law of thermodynamics
thank yoooou so much omg
What cause if the temperature goes down?the settings is 7 but it goes down to negative 1
Thxxxxx
Evaporater coil to direct compressor ?
Wow