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Air conditioners give you the much needed thermal comfort during scorching summer. More specifically, air conditioners help to maintain the room temperature at optimum level. They also help in removing airborne particles and humidity from the room. Let’s find out how how these devices work.
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I have registered and completed 1 online e-class on their website. It was Great !!!
actually, two termocouples are used to measure the "input" and "output" stream temperatures and than a sufficient fan speed is calculated to do not produce any liquid, but just vapor, else the pump will stop to prevent damage and the cooling capacity will drop, that is why you should always let the AC be in automatic fan mode. it will calculate the suitable fan speed to maintaining the cooling capacity you need to maintains the room temperature you requested.
Hello sir ...please make video regarding software/computer field ...thanx
Learn Engineering
Can you please post a video explaining 3 wheel new gen bikes. Eg th-cam.com/video/kb3f__pcsbw/w-d-xo.html Wanted to understand the working bending front wheels
To understand how an AC works , one needs to understand the thermodynamic phenomena that occur :
1.Heat travels from HOT to COLD naturally.
2.Boiling point of a liquid depends on both temperature and surrounding pressure. Water boils at 100 degr C / 1 bar atm pressure. If you lower the atm pressure below 1 bar, it will boil at less than 100 degr C.
3.When a liquid ABSORBS heat it EVAPORATES. When vapor releases heat, it CONDENSES
4.If a liquid is compressed, the pressure increases, temperature increases while volume decreases.
So , when the refrigerant (liquid+vapor) gets into the evaporator (inside the house ) , it absorbs the heat from that room , hence , it evaporates . Now, in order for condensation to occur in the Condenser(outside the house), the now vapor refrigerant(hot) needs to be hotter than the outside air so that to give away the heat (see point 1 and 3 from above) and condense (become liquid again). For this to happen, the compressor compresses the vapor refrigerant thus increasing its temperature (see point 4 ) . When the compressed vapor refrigerant enters the condenser , it releases some of the heat into the surrounding air which has a lower temperature ( see point 1 ), and transforming into a liquid ( condensation ) . The liquid now passes through an expansion valve ,where its pressure is reduced and the liquid begins to boil (SOME vapors form) thus releasing some of its energy (heat) becoming even colder.Now we have a mix of cold liquid+vapor ready to repeat the cycle .
You explained better than the video
@@drrdmohile true
Your comment taught me more than my professor
I love you.
Can someone give an everyday example of "when vapor releases heat, it condenses"?
I still don't get the idea of vapor release heat
It's still all magic as far as I'm concerned.
Electricity is the paid magician in this magic
@@bhanureddy2087 no thermodynamics principals is the paid magician
Pressure changes and phase change my friend
@@SimakSantana witch ! Its magic
What's does it mean
I am glad there are humans smarter than me who invented this technology and by doing so made all of our lives better.
Bitch they made it worse by environmental problems
Air conditioners can negatively impact the environment in the same way that other machines that burn fossil fuels do: by emitting harmful by-product gases into the atmosphere. Most air conditioners are fueled by electricity and use a refrigerant that results in gaseous emissions that contribute to global warming and ozone layer depletion. In fact, some studies predict that by 2050, roughly 25 percent of global warming will be caused by air conditioning.
@@jerricocampanella8015 but do selfish mankind care? Doesn't seem like.
@@jerricocampanella8015
If I tell you to go and live in the mountains and don’t use any technology that degrade nature , would you do it ? If you don’t then you’re a Hypocrite!
th-cam.com/video/IH9E0N65GZc/w-d-xo.html
In my place this is very hot summer now. I am watching AC videos to get the feeling of having an AC. I am poor.
A moment of silence for our man here.
...
Are you from Philippines
@@commentator4ever498 He is Indian or Pakistani
F
@@challengecoins4u what made you think that way?
Today I am feeling a special respect to my air conditioner
you father of hrithik roshan ʕ•ᴥ•ʔ
@@happinessallover 😅
th-cam.com/video/Wobxmbmeuyk/w-d-xo.html
Feel the respect for the engineers lol
The only thing you need to know is, there is no such a thing as "cold energy". Cold is simply the lack of heat. So if you want to know the simple way how your AC works. It doesnt generate cold but simply transfer the heat inside your room to outside. Now with the lack of heat in your room, it will naturaly feel "cold" .
But it’s blowing in cold air??
@@markequinox it's blowing air with "lower temperature" while simultaneously blowing air with higher temperature outside. The heat inside your room didn't disappear out of thin air but only *moved* outside.
You feel cold because heat escapes your body.
Exactly.
@@markequinox it's not blowing cold air, this comes from the mechanism that turns and absorbs the air
You just made me feel i don't deserve Air conditioners.
Same here!
th-cam.com/video/Wobxmbmeuyk/w-d-xo.html
😂😂😂
😂😂😂😂
😂
Everyone gangsta until this man explains the function of an air conditioner
th-cam.com/video/WobxmBMEuYk/w-d-xo.html
Everyone wants to be an AC Tech, nobody wanna learn about compression and expansion.
Learned more than my 4 years course in Mechanical Engineering.
Mushfiqur Rahman give me your website if you have 1 please
@@yankeedaddysteeve5087 I don't have any website. I am a student.
that's bad
Hhhh yes
Ya same, school is just outdated. I need 3-D animations with colors and labels. I learn 10x from a video than a book.
Shoutout to all the engineers who figured all this out.
Me 1:00 🤓
2:00 🤔
3:00 🥴
4:00 🤯
7:42 🤕 I think I know less than before somehow?!
I don't like this video. It could've been two minutes longer, with some simple schematics. The way it is produced, you are lost unless you really got what was told immediately before the current thing being explained.
I love how the narrator claims it’s simple, then casually explains thermal dynamics, pressure increasing temperature and evaporation, I hear him saying the words, I’m still stuck at level 1.
😂
@@peppigue Right
Correct
This is perfectly explained with amazing visuals. And I have no idea what's going on.
Compressing raises temp.
Stuff gets compressed. It heats up. Pipe moves hot stuff outside. Hot stuff goes away. Warm stuff comes inside. A part of the pipe that is small cools it. It cools it by letting the coolent sweat(evaporate and use up energy).
@@roytilton3864 lmfao
th-cam.com/video/IH9E0N65GZc/w-d-xo.html
I thought I was the only one who understood nothing, until I started reading comments 😂😂😂
u have to study basics of thermodynamics first
😂😂😂Me to bro don't worry we are not alone 😂😂😂😂
Hahah me after 2 mins👍🏻😂😂😂😂😂😂😂
@@monikasahu177 😂😂
I am glad I am not the only one lol
Assumption in videos
Assumption 1: people know about compressor
Assumption 2 : thermodynamics is simple
assumption 4: as you know how air conditioner works.
assumption 3 left the chat.
@@Hypocrite420 Must've been Gaben
Here is a project I have recently done----Three (3) 10Ton Ducted Split installtion: th-cam.com/video/UxVfIr6trOg/w-d-xo.html
I mean thermodynamics is pretty simple, hot travels to cold, the bigger the temperature difference the quicker the transfer.
It's a blessing to live in this era
Honestly, I’m more confused than ever now.
Compressor is like a pressure cooker, higher ambient pressure enables the coolant to stay at higher than normal temperature which enables heat to be driven out into the relatively cooler atmosphere. The expansion valve does the opposite, it decreases the pressure of the coolant so it's boiling point is lowered and it becomes a gas easily and the energy required to become a gas from liquid is achieved from the coolant temperature itself, so it drops. Combining two processes happening at the same time is what air conditioning is 😁
You lost me at Compressor.
Bryan Lee when you press two opposing sides of a spring together, you are compressing it. Similar thing happens but with Freon gas. In the physical world, as a gas is compressed, it also increases in temperature. Once that compressed gas is cooled, and it is then allowed to decompress via the expansion valve. As compressed gas is introduced to a lower pressure, it naturally cools, giving the evaporator the coolness it needs to blow air across the coils to blow the cold air into your house.
@@iamthehenke No gas is decompressed in the expansion valve. After the condenser, the refrigerant is in liquid state.
You had me at compressor
@@iamthehenke u lost me at freon
Loll
I have had this explained to me in so many ways so many times, and for some reason I still cannot comprehend. 🤪
quarantine: *exists*
my mind: how does an air conditoner work?
My brain : why not ?
You actually searched for this lol
@@axeljmiller3757 for me it was locks. How do locks work? Cool little mechanical puzzles. Even got some clear acrylic ones where you can see what happens inside.
Congratulations. You did an amazing job. I was looking for a video like this for years but none could help me as much as this. Keep up the good work
Impressive as always! I always learn something new from your videos, even after watching 2 or 3 times. Thank you for the hard work! It really makes a difference for people who are trying to learn. Keep it up!
Much Appreciated. It actually makes so much sense how everything comes together. Wonderful piece of engineering!
Saw this mid-study for my thermodynamics exam, this is definitely a helpful example of the 4 phase energy-transfer diagram and pV diagram.
In HVAC School and this video helped a lot. Basically your AC doesn't make cold air. It simply transports the "hot" air inside the living space to the outside space by using refrigerant as a medium. 1. Compressor inlet receives GASEOUS REFRIGERANT(Refrigerant now hot and under pressure) & Pumps it into the condenser coils. 2. In the condenser coils refrigerant is now liquid. And heat starts to leave (Gas gives off heat when changed from gas to liquid). This giving off of heat is expedited by a fan or blower at the condenser coils. 3. The refrigerant goes through a metering device like an orifice and becomes low pressure again as it enters the evaporator. 4. At the evaporator coils, another state change happens to the refrigerant, going from liquid back to gas (liquid absorbs heat when it changes from liquid to gas). The gas refrigerant is whats absorbing the heat in your home and condenser expels it outside. Your AC does not create cold air, its basically a system that transports heat. 5. The gaseous refrigerant then enters the compressor again where it starts the cycle all over, constantly just removing heat energy from your home. WOW, HVAC School is paying off so far. This stumped me before. Cant wait to graduate and get out there in the field. 40K in student loan debt from college, didt even graduate, now I'm going to trade school to learn skill to make some good money. I shoulda done this straight out of high school. Oh well.
1.Compressor inlet receives room temperature with low pressure(pressure already reduced in expansion valve.).
2.condenser will reduce the heat coming from coppressor.
Thanks! I can now understand it clearly.
Jaylen Alexander when I pressed read more I'm fucked up
does not create cold air? really. what exactly do you call the 55deg F air coming out of the vents?
I love how you colour coded the coil lines to show when and where the temperature changes occur. Thank you for this educational video.
Brilliantly explained and animated! Thank you for making and sharing this.
This is so simple. They should make it more complex.
can you explain why temperature rises when a substance in compressed
Ideal Gas Law: increase in temp leads to an increase in pressure
@@ericbeaudry8118 yes ik that but what about its reverse?, i mean increase In pressure causes increase in temp?
@@asharibsohaib6579 yessir
@@asharibsohaib6579 as long as volume is held constant
Best job i've seen of explaining in clear and concise terms the principles of operation of a mechanism that bewilders most people, even the otherwise "mechanically inclined" among us. the awesome cutaway views of components in operation really reinforced the narrative as well. thanks for sharing this!
I’m in HVAC SCHOOL and I learn more from this TH-cam video then my own instructor
Im in the same boat
Happens I basically learned on my own and just went to class for the grade and get my certification.
Same here
You are in the wrong school.
Thanks DANFOSS for the explanation of basic refrigeration system.
1am : time for sleep
1 :30am: how does the clutch works
2am : understanding motorcycles brake
3am : understanding satellite
4:26am : how does airconditioner works
I promise this is my last video for tonight until then 😂😂
Still watching how how how how
Jeff Acena and the next morning you can fix anything....
Jeff Acena that means you are mechanical engineer, an electrical engineer and much much more 😂🤣👍👍
Loll
Its literally 4.26 AM as I read this, LOL
Didnt got anything but at least i know how its made
Beautifully explained !! 🙏 one good video is better than hundred pages of explanation
This video is like if a piano master tried teaching a kid how to play piano by simply playing it in front of him.
Lmao! Love this comment!
th-cam.com/video/IH9E0N65GZc/w-d-xo.html
Fantastic! Simple, but complex at the same time. Thank you for the video!
After years of research, I finally found a tutorial that teaches properly the operation principle of an expansion valve. Thank you so much for sharing!!!! Regards from the Republic of Panama.
Years of research? You just needed to do a simple youtube search
i understand nothing the way it works but one thing i know is human knowledge is amazing
This helped me lots starting out as a HVAC Technician thanks.
Your animation is absolutely fantastic! Thank you so much for sharing it with us.
Perfect animation explanations. Most of things I understand with a it ☺️.
Video was awesome!
THE BEST EXPLANATION ON THE INTERNET.....YES THE BEST.👍
MY BS&C EXAM IS TOMORROW AND I HAD NO IDEA ABOUT HOW AC WORKS..THIS HELPED ME A LOT!!!THANK YOUUUUU
THANKS! it's the 1st time in my LIFE that I have UNDERSTOOD the concept FULLY! :D
The best Engineering channel in youtube according to me. You saved my life.
th-cam.com/video/IH9E0N65GZc/w-d-xo.html
I love Internet
It teaches me stuff in just 7-10 minutes rather than years of learning in schools
If you do pay attention you'd say " I'd already learned this" which i can say cause I've payed attention
@@prettycureforever7102 his point is about time not just learning. He learns in school as well but at the cost of years of school hours.
APNE AC K WORKING PARTS KO JAANE,, BEHTREEN VIDEO.. th-cam.com/video/AW4ov7e8nvU/w-d-xo.html
Whoever created this thing, you have my life sir
Perfect explanation...
Simple words.
Easy to understand.
Just hats off u.. sir
Perfect explanation sir. Thankyou.🙂👌🙏❤️
Thank you so much for this video. Really helps me basically understand the way air conditioner works
I am so excited i want to know everything in just 1 minute.
Great video. At some point you may lose the line of reasoning and the physics implied (as each part demands proper assessment) and you end up looking that some device is important because "it does some stuff that helps with other stuff" but you can always get back and tackle each segment or delve deeper into the mentioned concepts.
very interesting it really shows how aircondioner works before I thought that the unit will give us cool in every room but the other way around the evaporator just simply absorb or lower the heat temperature inside the room and push it out through the condenser and junk into the sorroundings so that what's left inside the room is cool 😊
It is very amazing to comprehend the system of the air conditioner.I'm very impressed with this channel. Thank you and love u❤❤❤
it's amazing to think that veins in human body also use a very mechanical thermoregulation technique. cooling topics are cool :)
Omg! Now I can actually feel the air in my room 😀
Great video! I LOVE cut away animations, they really help with understanding the topic. Keep up the good work!👍
Iam not some for mind good way but some helping some miss uesd playing pin not for not under ony yar 2may ×some not some for me msking cheact creactived mind diss missed ok self nor diss cannetact play boy ,and pin making iam evrthing under staned not some dail some need selfed trebles making what iam school stedy withyou my selfed sted and comeing for work shoped but iam school boy compering bai ok pleas not other prdon and compering ok boy and animal mind good begarvar keepin ther any good prson mangeing artfishacalnot moodok
We appreciate to those who made it for us.
I woke up after 10 hours, again I'm sleepy as hell. Best tool for treating insomnia.
Great knowledge, learnt alot in 7 min than in a school. By the way, how would one heat a room in the case of winter, reverse the coolant flow or use a different system? If so, which one?
I build a few of these every day at work.
Our “conditioners” actually dry the air with these same principles and a few more. Instead of an “inside coil” we use heat exchangers with drains to extract the water.
And we use a danfoss condensing unit in every one of out dryers.
I'm a Chemical Engineering student in Brazil and I love so much your videos and your passion of teaching and discovering ways of showing us how science works. I'm using Ansys to simulate fluid mechanics and your work inspired me
Txv's are just one of several designs used when metering refrigerant for the refrigerant cycles evaporation process ...
i just realized that I'm dumb. 😵
Ewan Qu naw dude repetition is key 🔑. Watch it more than once and other video
Well everyone is "dumb" at some point. Smart people admit they know nothing about something to open up their minds to learn something new. A person that "thinks" he is smart, will start to question themselves for not understanding on the first try, blaming genetics. Just admit that you don't understand and take the time and effort to understand. It took a lot of effort from even the best scientists with brilliant minds, through trial and error, to even get to the moon--they didn't get it the first try either. Every trial that failed didn't discourage them, because they knew they were getting close to the answer with every failure.
realy
@@misternobody4644 👍👌
@@misternobody4644 true👌👌
You make great interactive engineering content. Keep adding more technology in simplified animated way.
Hey I did an internship at Danfoss! Great company, I was working in their hydraulics engineering department but very similar concepts just a lot less compressibility
I am at Monroe Community College in the HVAC degree right now. In the most plain terms, it is all about moving heat from one place to another like in a refrigerator taking the unwanted heat from either the door being open, hot food stuck in, or any heat that finds a way in and extracting it to another place probably being your kitchen. If you want to know more about how pressure and temperature correlate look up Charle's Law and Boyle's Law. Compressors don't die, they are murdered usually. Unlike gas, liquid can't compress (think of a belly flop into a pool and how the water feels like a solid). The vapor increasing in temperature is called superheat which is a sensible type of heat (can be measured with with thermometer) where the change in state between liquid/gas in the condenser and evaporator is latent heat (phase change). On the contrary, cooling the liquid is subcooling. TXVs are not the simple type of expansion valve (also called metering device), the simple ones are capillary tubes. Where TXVs have a temperature sensor between the evaporator and compressor (discharge line) to regulate superheating to a specified range, a capillary in plain is sight is just a looping coil with no way to control the amount of liquid getting through. The TXV regulates, where the capillary tube just merely keeps pissing refrigerant.
Nah you got it wrong. It's expelling heat from one part and absorbing heat from the other. In other to absorb heat from the evaporator it creates something that would have turned to ice if the fans blowing it inside the room wasn't there. Since the fan is there ,it Blow's it in just in time before the ice builds up. But then there would still be ice, so that's where there is a pipe to leak out the water outdoors. Lol the guy couldn't explain coz of time but well
Plz make any video about the working of a Ceiling Fan
And about the Capacitor used in it?
Thank you! I really needed this!!
WOW, what a cool subject!
That turned out to be way cooler than I ever imagined...
Ok sorry for that
I like how you compressed your comment into a tight joke. That's hot flow. 🍻
Yep after watching this video I still don't understand how aircon works
Thank you, very good explanation. It’s easier than I thought
Engineers are truly the ones who change the world, not some comedians or celebrities.
Be careful, the left wing wackos hate when the truth is told out loud.
I understood its so difficult to understand this.
So i passed it on to my dad!
Its simple. The basic principle is that when liquid evaporates, It absorbs the heat around it and cools the surrounding. That's why you feel very cold when you come out of a shower. The water on your skin evaporates and absorbs the heat on the skin and cools your skin. The same principle is used in ACs and Refrigerators. Here instead of water, a liquid (refrigerant like freon (cfc)) is used. It has very low boiling point and very good thermal conductivity. Because of its low boiling point, it evaporates easily in the room temporature. This refrigerant is pushed into the evaporator ( ac unit inside the house) in liquid form. The evaporator coil is continuously blown by a fan (ac unit inside the house) and the air blown by the fan passes through the evaporator coils and enters the space which needs to be cooled (room). When the liquid refrigerant enters the evaporator coil, it evaporates into vapour because the coils are exposed to the normal air blown by the fan.( low boiling point). As it evaporates, it absorbs the heat in the air blown by the fan and cools the air. That cool air enters your room and reduces the temperature. That evaporated refrigerant from the evaporator needs to be turned back into its liquid state because the ac/refrigerator system is a closed cycle. You need to reuse the refrigerant in a continuous cycle. So the evaporated refrigerant is pushed into the compressor driven by a motor (ac unit outside the house). The compressor compresses the refrigerant vapor and turns it back into highly compressed gas. But when the vapor is compressed, it becomes hot. Now the highly compressed hot refrigerant contains all the heat it absorbed in the evaporator and all the heat which is produced during compression. It needs to be cooled. So it is pushed into the condenser where the hot pressurised gas is cooled by passing through coils being cooled by a fan (ac unit outside house). When it gets cooled, hot compressed refrigerant gas condenses back into liquid. This liquid is sent back to the evaporator again for evaporation for further cooling the room and hence completing a cycle. Now there is a device called thermostatic expansion valve between condensor and evaporator. It basically controls the amount of flow of liquid refrigerant into evaporator. When the room is hot, refrigerant can easily evaporate so the expansion valve allows more flow of liquid refrigerant into evaporator. But when the room is already cold, the refrigerant doesn't vaporise easily like when the room was hot. So the expansion valve reduces the flow of liquid refrigerant into evaporator. This control of flow is important to ensure that refrigerant always leaves the evaporator in a vapor state. Because if the refrigerant leaves the evaporator in a liquid state, it will enter the compressor in liquid state. Since you cannot compress liquid, allowing liquid into compressor will damage it and reduce its efficiency of compressing. That's why the expansion valve always keeps an eye on the evaporator outlet using a sensing bulb and maintains the liquid flow to evaporator ensuring complete evaporation inside evaporator. Your ac/refrigerator contains smart monitoring system and controllers to maintain the required temp by controlling the compressor motor speed hence controlling the flow speed of refrigerant in the cycle. This is how ACs and refrigerators work. I am a marine engineer and I work with big refrigerating plants in ship. I hope this helps you understand.
@@SuperGuruoo7 we need people like you in engineering video comments, thanks a lot man
From now on, AC's will be respected members in my household from today..🤩
Thank you so much
I found AC system...
Thanks lot😍❤️
just straight to the point then explain that point please thank you
Your videos are so understanding. Please make a video on working of a satellite
Everything was going well...Unless Compressor jumped in...
It's a pump.
until*
@@conqwiztadore2213 pump works on liquid while compressors for vapors
th-cam.com/video/IH9E0N65GZc/w-d-xo.html
Now I finally get it!
I read before about the compressor and evaporator being used, but that material didn't explain _how_ they do that, it didn't explain the pressure bit.
Well-explained video. I understood it clearly. Thank you.
Nice sharng boss
I like
6:25 if I’m correct that means that the needle will adjust the pressure again to make sure that it all remains as gas.
That's where the trickier part is, to understand it better and easy let's first address the tricky part.
As the bulb works with the exit part of evaporator coil, needle works with the entry of it.
By taking the input from the bulb at the exit, needle adjusts itself at the the entry of the evaporator coil to determine how coldly or hotly should it send the registrant(Liquid+Vapour) into evaporator coil.
For suppose, if the bulb isn't recieving the refrigerant at high temperatures than the room temperature then it let's the needle know that it's time to decrease it's inlet valve size in order to make the refrigerant even more cooler while entering the evaporator, so that the higher room temperature around the evaporator will help refrigerant evaporate into vapour state completely while leaving the bulb.
@@ambidekstrusful, the inverter system also controls the evaporator temperature and so does the TXV. How do they collaborate?
@Naleen Silva Not exactly. Yes, the invertor system(compressor) controls the temperature of evaporator. While TXV only makes sure of sending back the liquid from the evaporator in its purest vapour form to the compressor. TXV uses Bulb to interact with evaporator's temperature and adjusts it's needles valve size.
its complex and i love it
it’s 4 am and this is amazing
Super Heating!
アレキサンダー 佐藤 CORRECT! A/C Units do utilize a super heating principle!
Puma Smith Yup, we have plenty of Portable A/C brands here in Japan! ヾ(๑╹◡╹)ﾉ"
Japan... COOL !!!
oooh okay! so, if I understand correctly, an airconditioner can cool the air in my room down? thanks! all I needed to know! :)
Reading your comment made me lose some brain cells, please don't repeat that again 😊
@@derlerner8378 boomer
@@faridaeldegwy3766 at least I'm not as boomer as to upload videos about skin care products...
Thank you so much for such fabulous explanation !
Great job. Good to understand for technical mind people . Got it
I'm too stupid to comprehend...
Give it some time, friend.
Are you smoking something?
Doctor Cornelius
That was extremely helpful and easy to understand!!
Thanks, now I understand how it works🤗
John Ratko
No but I lost it at the part where it explains the expansion valve...
No this video is bs they don't know what they are taking about
The BLDC motor of the compressor is magnetically unbalanced with the magnet poles and stator slots configuration shown in the video at 1:36. There should be 12 magnet poles on the rotor.
Good point
Thousands years of innovations and researches just into a machine. Thanks
Thank you so much
Very good explanation
All I heard was "temperature inside is higher than the temperature outside"
Exactly same here
Lol
😂😂😂
me: *Hears the word valve*
head: *iggghhtt imma head out vroo*
Great visual explanation!
Sir the way you are explaining is really outstanding
The person explaining this is the reason why some children end up in special education in America.