How does a cars Air Conditioning system work?
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- Опубликовано: 27 фев 2017
- Hey, In this animation I explain the basics of how a vehicles AC system works. I make reference to the pressure inside the system which is really important for the system to work correctly.
On average you should have approximately 1.2 - 2bar (17 - 29 PSI) on the low pressure side and approximately 10 -15bar (145 - 217 PSI) on the high pressure side. This is with the system running.
On a static system (off) you should measure approximately 5bar (72 PSI) of pressure on both the high and low pressure side.
In natural form the AC gas R134a is a gas and has a boiling point of - 26.5oC at atmospheric pressure.
A high pressure is used to change the state of the gas into a liquid. This is because a substance absorbs heat when its converted from a gas to a liquid.
The refrigerant circulates in the closed circuit, continually alternating changing from a liquid to a gas and vice versa. The refrigerant is:
Compressed in the gaseous state,
Condensed through heat dissipation and
Evaporated through pressure reduction and heat absorption.
Cool air is not produced, heat is extracted from the air flow in the vehicle.
All vehicle AC systems will lose some gas over a period of time and its recommended to have the system serviced regularly. I would recommend every 2-3 years.
I hope you enjoy this explanation and if you have a question please ask.
#Airconditioning
#AC
#HVAC
#engine
#howitworks
#GarageTech
#cars
#Animation 
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I watched about 5 videos on AC --even one from a professional institution--yours is the best so far--thanks.
Strongly agree.. thank you.
Also checkout Donut media YT Channel. I like their animations too. this one is very well done btw
Can’t agree more!! Excellent explanation 😄
good show, specifically because it is animated keeping all the parts in exact position of a car. that makes this video different from others. keep it up.
what happened to the dryer after the refrigerant passes through the condenser?
Good to see some actual temp and gas figures. Greatly helps in understanding. Thanks.
I was curious how A/C works and I found this explanation exactly on my car :)
Great video. Congratulations!!! I work in automotive industry and I have to thank you for sharing your acknowledge with us.
Hats lift up Professor. I love your dialect and the way you teach.
You are kindly asked to hold a seminar for teachers to teach them how to teach.
If it's in my hands, I honor you an OSCAR.
Hopefully, your Excellency would accept my kind and deep regards.
Once again, thank you so, so much.
Your proud student.
the best "How does it work? " I've ever seen thumbs up
I have never seen such a big mistake in explanation. Gaseous refrigerant is entering the evaporator instead of liquid refrigerant.
@@aniketdeshmukh836 he said gas enters the evaporator, not liquid.
But as I read, his mistake is, that it actually is liquid when it enters the evaporator and cools the air down. A liquid cooling air down sounds more effective than a gas cooling air down. And then on its way back when it gets warmer it gets into gas again. I'm actually not sure about it right now.
Great I’m a qualified mechanical engineer and auto electrical technician, and I never really knew about to much about a/c units until watching this video thanks, I’m more old scool..from the points ignition and carburettors ect ect..from the 70s..
Really good video. I have always had a lot of trouble understanding the theory behind it so actually seeing the flow really helped. Thanks a lot 👍
Very good video and explanation, as well as indicating the directional flow of the gas in the system. I am getting high pressure on the low side so I'm thinking it's probably the expansion valve now as this seems to be the place where the high pressure drops to lower pressure. Thanks again for posting this.
Thanks for the video! Really comprehensive.
Your presentation is highly appreciated... Thanks for the work
I love your dialect Sir.
It reminds me with my lovely British Professor .. Blessings.
Once again, thank you.
Kind regards.
I watch all your videos with pleasure and learn a lot. Thank you for sharing your experience with us.
Fantastic video. Top tier visuals and thoroughly but succinctly explained!
U made it to understand very easily , while comparing to other videos .. thanks 👏
Perfectly explained. From the animations to explanations. Thank you very much! Cheers from USA
Without a doubt THE BEST video about this so far, others talk a lot about details in the compressor and shit but they haven't even explained how does the system works.
🙏🏽
Great video well explained and easy to understand with animations and placements of the AC components
Great explanation and animation.
thanks so much, excellent explain and presentation
Wow, after many videos finally one that explains with the actual numbers... Thanks
Very detail explains, great knowledge
Fantastic video to break a complicated process down into lay mans terms and deliver excellent commentary 👍🇬🇧👌👌
props to the animation. great work
fascinating animation/explanation !
Such great video, thanks for putting this together
I was watch so many videos but i can't understand anything about Ac working. But your video was awesome . Very knowledgeable animatic explanation. Very Good 😍😘
Good illustration how it work. Now i can clean my coil with coil cleaner with confident.
good explanation man.. keep doing more work like this!!! Great job
Thanks dude 🐸 for the quick knowledge
amazing video ....thank you
Hats lift up from America to you Sir.
Thank you so, so much.
Kind regards Sir.🎓
I learnt it was way back in 2014-15(engineering days)....But that time I was confused regarding this topic, finally I got the solution... The way u r explaining pressure & temp. at perticular point is just clear all the daught. Thanks
All Indian engineers are like you, they pass exams without understanding much, the system is such.
@@NishitShukla Right. They only focus on how to get numbers.
@@prashantjagtap_17 My father was B Tech Mechanical, he retired as Chief Engg, Damodar Valley Corp, ran a 780 MW plant, but I don't think he knew how the thermal power plant ran. 😁😄.
I am into Economics, even I don't understand how the economy works😁😄
@@NishitShukla 😀 Ok. This month I got selected in Johnson control as a design engineer, and the main product of company is HVAC, so I suppose to know all things about that so try to learnt this after selection 😅😜
@@prashantjagtap_17 Good luck man😁😄. I am confident that you will never be the one to invent fb, twitter, google or for that matter anything that can be called invention.
The last major invention from India was lavan bhaskar churna.
meanwhile in mother russia, the weather cools the a/c system
I wonder how many people in cold weather countries such as Russia (or Canada, Sweden, Finland...) get seized compressors for not being able to run AC for long long times...
TeraVolt Not all cars automatically turns of the ac so in some you can have the ac on
Yep, conventional A/C, in reverse!
And the Motor warms the Person... the co2 warms russia so everything OK.
@@teravolt6113 they turn on the heater
fantastic vid, really well explained
Great video need more like this
Very nicely explained.Great job.
your voice is too low. but music is like a thunder.
Yeah don't forget to turn the volume down after he's finished or you/I will jump.
@@hegotaspare I was prepared and still jumped wtf us that sound design .
The guy: I’ll put music at the end 🥁🎸😋
Me now: 🧏🏽♂️
Thank you sir
u briefed clearly how the car ac works
Fantastic explanation, thank you.
Very good info, thanks and keep it up
Best a/c demo.
Thank you for the great video, it helped me a lot. 👍
The best video on ac ever in my opinion ....thnx
Can I ask what program you used for the animation? It's really good.
Thank you so much
Nice and clean thank you
Hi Mr. , can I know lowering the Glass wail ac is on will effect the ac?
One small correction: Dryer is used to remove any unwanted water (or water vapour) and also acts a filter. Water vapour is really bad as it freeze in expansion valve causing starvation.
Thank you, Thank you, Thank you.......It all makes sense now.
good animation ac system works
Great Video of Technically Published about an inside mechanism HVAC System of car. Very Useful...
Good review
One of best video ,understood at once .tks
great video!!
Very straightforward explanation. I feel intelligent now 😅
is there any arrangement to keep compressor speed constant or is it directly driven by engine and its speed varies in proportion to engine speed?
Good job friend you explain nice and I hope everyone will understand because this way you were told and the video clear and it’s educate easily
well explained!
this is the first time im really understanding wats it all about ....tanx
This video is great!
brilliant explanation
Excellent explanation and video! Could you tell me please which software you used for the animation. Was it Solid Works or something more specific to the automotive industry?
I think this video was borrowed from VW tech training or something! Very good animation though!
Wow GarageTech what a superb video.
Good explanation
That is a Fantastic and simple explanation of how the refrigerant works in a compressed state.. what I can't seem to find is a video explaining how the electronics side of the system works ? Like what happens when you push the a/ c button on the dash ? Sends a signal to what and what pressure sensor those and fan clutch closes etc. ... Which intern leads to the video you just presented.. thanks I hope you have a video on it , and if not would you make one ? It's good to understand how the whole A/C system works. I need to know in order to try and repair my 2007 Honda CR-V a/c system .. I need to understand how it works from when you push the button.. Sorry for the long comment. Thanks again.
Very good explanation.
Awesome job man, thanks
Hi , great video , would like to ask you , i have a 2001 jeep cherokee and removed the radiator and aircon condenser in the condersor ... what oil do i use to refiill it ? The oil was reddish coulou ? Thx in advance ...
great help...thanks mate!
Good video my brother thanks for explaining. What cause my car to cool on highside from receive dryer to expansion valve. Can you explain to me brother.
Thanks alot simple and easy
well explained
Fantastic.
Very good video, very educative.
good explanation give you liked !
Extraordinary bro
What a video … simply marvelous expalanation❤
This is very good tutorial... Thanks👍👍
Excellent video.. Will the engine rpm affects the performance of compressor and cooling? For example say engine's idle speed is 1000 rpm and when we drive the car the speed will be like 2k or 3k rpm so what's the effect of engine speed on an AC compressor?
Thankyou for busting my hearing after the end of actual video.
How does the compressor handles high rpm's? Does the valve lets more fluid flow, or does the cooling fan from the radiator helps it maintain a steady pressure inside the system? I know it has 2 modes, the normal and the max speed fan. Will it cool more if I maintain the engine at higher rpm's too?
Thanks!
Does insulating the pipes between the compressor, the condenser and the evaporator help in the over all efficiency of the AC ? I am asking this because my car has these pipes insulated at some sections and not insulated at others.
Amazing engineering
Great video
could you please upload a video about the electrical side of ac system?compressor engagement ac fan working,about the pressure switch circuits.ac switch.like those. thank you.
Hi!
Can you tell me at what speed the gas are traveling inside the tubes system?
THX!
Does the a/c clutch stay engaged all the time when the a/c is on and the car is working on park gear on idle (Altima 2010)? Thx
Thanks for the video
Good explained
Very good.
Very informative thanks
A little technical but I got it how it works great explanation 😃
Can I keep my ac temperature setting at Low or should I set it to a certain degree e.g. 25 Degree? Will I wear down the compressor faster if I fixed the temperature setting at the lowest? Thanks
Thanks! Much obliged.
@Garage tech, on the return circuit, is it not the hotter gas that comes back to the compressor? Not the cold gas as mentioned in the video. If it was cold gas, it was not required to be circulated back to the compressor. It should be hot enough to continue to be a gas but not hot enough for heat transfer with atmosphere which is why gas is compressed and sent to the condensor.
Can you also please help us with the powering system to the AC? Is it only the compressor fed by the engine ?
hi. can we get that warm air passing radiator into the cabin(inside car)? i mean is there any way to dont wait the motor get warm to bring warm air inside car?
Well explained. But voice is soo low.
Great work. 😊☺️
Well explained