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From: HowStuffWorks
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  • why has he posted every one of his videos on mars 9th 2007?

  • yes this is exactly how air conditioning works- great video!

  • he calls himself Marshall 'Brain' !!

  • Why did I watch this?

  • not watching a 30 second commercial.

  • I love learning how these things work

  • 30 second advertisement for a 1:24 video!!??

  • how about fuck page rage? :D

  • STOP THE ADVERTISEMENTS ALREADY!!!

  • ]o9i

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  • crap graphics

    

  • I think he is advocating pouring alcohol all over naked bodies to cool off! Surely this has to be PIC somewhere in the world.

  • Oversimplified and inaccurate. In Tax-us, er, Texas, they would call this piss poor.

  • what a video..

    many mistakes in info

  • a/c in cars mean air conditioning or air clean?

  • Comment removed

  • do i hear the dial-up sound from a 56k modem?

  • i hate commericals

  • Cold Air Conditioning is really a compressor. An air compressor can shoot out cold air. If you shoot tire inflator air on your hands you can feel the cold air. Its exactly the same as Cold Air Conditioning. When you push Cold Air conditioning, it turns on the air compressor. The air from the air compressor goes to another chamber where it is stored. The excess water leaves the tail pipes. The Cold Air goes into your car from that stored tank.

  • You think that Compressor is Funny? When I went to Refrigeration School in the Air Force they had these Fat Little Cartoon Cops come out & Beat Down the B.T.U.'s with Night Sticks, & Drag them off to the Condensor to be Cooled Off! No, I'm not making it up. You can't make up things that funny! This was in the Mid 1980's & they were still hand drawing those Cartoons. That's what happens to Cartoonists that work for the Government on Training Films. They start to lose it! It was Police Brutality!

  • Ok heres my question. How does the refrigerant get evaporated and condensed? I dont think that simply passing through the coils will do it, there has to be another process going on. Can anyone explain?

  • @dragonfire836 no thats pretty much whats going on. the temp that the refrigerant evaporates at is just really low

  • "How Air Conditioning Work"? You guys should have watched "How Grammar Work" before making this.

  • I can't take you seriously when the name of your video does not contain proper grammar.

  • swamp cooler :/

  • this video is stupid. Theres much more to an air conditior than other than that. Otherwise it wont be so big

  • better put the alcohol in my moth thank at my hand

  • @BuKuTyyy Obviously, you have had too much to drink already.

    

  • that modem sound in the background music is getting on my nerves. Otherwise, a great video!

  • This video fails to mention the expansion valve and what it does. It's the key to how AC works!

  • does it have to turn back into liquid? When my air compressor works the tank gets really hot. when i decompress air it gets colder. So my question is would it be possible to use simple atmospheric air to do the same thing?

  • @cyberlord64 it can do the same thing. how ever if following this design it would not be as efficient. In fact this design of a/c very efficient because when gas expands it speeds up and loss energy due fiction. you never know because the energy need to taken is greater than the heat generated through fiction. however light gas like hydrogen the heat generated through friction is greater than energy it can intake when it expands.

  • Why do you play distracting ringing sounds and bad music, while you are trying to communicate a technical concept? Please explain.

  • not that hard to understand

  • you dont know what your saying...not explained well

  • seriously a 30 second commercial for a 1:30 video??? wtf!!

  • um....in reference to that quite dumb toilet paper advertisement at the beginning, ive been going green now for quite some time,but ive never quite been comfortable with the huge quantities of t.p. i go through.I did a little research though,and learned from some of my middle of the east friends a cool money saving little trick!i just take my hand and slide it through,collecting the largest of the mess off of me,then,using the inside,i take my shirt tail an rub till i sparkle!thanks guys!

  • what the fuck i dont understand this !!! and the fucking background music is very annoying.

  • And still... i don´t understand nothing...

  • so your saying the AC makes my house cool by humping my home?

  • This is a TERRIBLE video. Many mistakes in info. And it's not called Freon gas, it's refrigerant. Freon in a brand name. Air over the cool tubes is doing a lot more than is explained here.

    Terrible. This video makes HowStuffWorks look really bad.

  • @planetrob555 You must be an HVAC "pro" who talks down the industry and try and keep it so secretive for job security.

    They got their point across and that's what matters. If you are going to just complain, why not try and say something that would add value to this video instead of just b***ing over a term.

  • @tonystark19631 I didn't BS over "a" term. I said that this video has several mistakes and is not accurate. Secretive for job security?? I think you've watched too many movies, like Iron Fag.

  • @planetrob555 Idiot, I didn't say BS over a term, I said bitching over a term. As in you were complaining about a single term and didn't add value in your rant - hence bitching like a girl.

    One thing I've seen about many HVAC contractors I've met is that they don't like to share info and keep things secretive in order to protect their jobs. Most of the HVAC people I've met have been douchebags, just like you.

  • @planetrob555 apprantly it's a brand name compressor, dumbass.

  • @failtolawl Dumbass? I'm not talking about the compressor, or the brand-names of compressors, of which there are many. I'm talking about the gas that the compressor manipulates. That gas is called refrigerant. The name-brand refrigerant is called Freon. The proper word for it is refrigerant. You are obviously not really aware of what's what. 

  • @planetrob555 Freon is actually a gas

  • @planetrob555 freon gass is horrible

  • @planetrob555 Agreed. Over simplified to a point of inaccuracy. It could have been simply stated as a heat pump- taking heat form your house and moving it outside.

  • @planetrob555 you are wrong!! Freon gas is a type of refrigerant and it is not a brand name! You cant find it on the periodic table of the elements. So get your facts right son.

  • @FlyinBrit Chlorofluorocarbons are known by the DuPont trade name Freon. TRADE NAME. Trade=Brand. From a dictionary: A trademark/brand name used for a variety of nonflammable gaseous or liquid fluorinated hydrocarbons employed primarily as working fluids in refrigeration and air conditioning and as aerosol propellants.

  • @FlyinBrit Would you mind telling me the atomic number of this element you think is on the periodic table? Freon is a brand name, and is NOT something found on the periodic table.

  • @planetrob555 I guess, but they put several of these segments in a single hour-long segment and lots of laymen are watching. They could probably make a 3 day seminar out of it explaining convection, conduction, and overall heat transfer coefficients or they could just slap "Freon gas" on a poorly animated compressor knowing that the average person is thinking "Freon. That's the stuff that keeps my other stuff cold." It's not perfect, but look at it like this: It's not Expert Village bad, is it?

  • @HuggumsMcgehee I can see what you're saying.

  • @planetrob555 refrigerants are hydrochlorofluorocarbons, hydrochlorofluorocarbons are also known as freon

  • @lundwed The public calls these compounds "freon", but they are wrong to do that. Freon, as discussed in this comment section is a specific brand name.

  • @planetrob555 He did not mention 'Freon gas'...

  • help does anyone know where i can get a condensor for a 12,000BTU magnasonic Air Conditioner? well condensor radiator its about 21.5" by 15"

  • @Mooseguy15 This is A one ton Air conditioner for the time and price you can buy a Brand new A/C unit at your local hardware store

  • I'm Marshall and that's.... how Adobe Flash player crashes?

  • what's the name of that liquid? 

  • @TzatzikiF Freon

  • @TzatzikiF he is an idiot dont listen to him freon is the name used and trademarked by DuPont the real name of the liquid/gas is R22, or R12 for olllld cars nowadays we use R134A for A/C units and R410A for Cars as far as i know i think thats how it works R12 is for old cars and R410A is for newer cars please correct me if wrong also nothing is stopping you from changing an old cars A/C system to a R410A system just by taking the Freon/R12 and putting r410a in once again correct me if wrong

  • hey,i have small chamber and i want to make ac,and put it in that...so is there any small compressor to which i can use it for my work........

  • Now tell me how can I make one home made air conditioner...... ??

    fff

  • Now tell me how can I make one home made air conditioner...... ??

  • everyone is a/c experts now you guys suck

  • Funny compressor animation but otherwise it's great.

  • This video is BS, Evaporate? How about Compact and expanded liquid.

    Like when gas come out your butt it cools. )

  • ohh yea... i didn;t know that...thank you.

  • This video is shit false info , the compressor turns the gas into a liquid? it the true...

  • the compressor turns the gas into a liquid? it the true...

  • @MrMrArrtt ,it's not only the compressor,it's the compressor,the condenser(coil + tank) + fan working together what brings the refrigerant (in its gaseous phase) to its condensing point (this part of the system increases the gas pressure by adding molecules and decreases its temperature by removing heat (which passes to the atmosphere (low temperature reservoir). 2EASY MAN !

  • @jorgecalivalle When you increase pressure, you don't "add molecules." You just reduce the space which those gaseous molecules occupy. The volume of refrigerant in the system is CONSTANT (... unless you have a leak;).

  • @walterbrunswick ,the compressor forces the molecules in the LPS to the high pressure side,the expansion valve lets the liquified gas go from the HPS to the low pressure side thus there's a continuous transfer of mass from P = nRt / V if you wanna increse P you must increase either n or T or/and decrease V.

    At any instant mass in the LPS + mass in the HPS = constant ,given there's no leaks

  • icoolaircon.co.uk

  • That was the worst explanation of anything I have ever seen in my entire life.

  • @franfrank I was thinking the same thing! MY MOS (job) in the military is essentially to maintain AC units, so I was training and learning how they work and how to repair them for several months. I maintained the highest grade in my class for 80%+ of the course, and I still didn't understand what he was saying.

    The diagram is the shittiest I've seen, and what he said hardly made sense, because he just kept talking and talking! This video REQUIRES a more precise diagram!

    HOW IS THIS VOTED UP???

  • That was the worst explanation of anything I have ever seen in my entire life.

  • The intro song is FUCKING ANNOYING!! I've watched about 2 of these videos and it's getting on my nerves! AAAAArGGGH!!

  • excuse me, is this a commercial product? or industrial product? (the air conditioner) THANKS FOR THE ANSWER.

  • @animeaijin21 All air conditioners are designed essentially the same. The video here is just complete shit. I would recommend looking elsewhere for a more precise and educational video on how air conditioners work.

  • refrigeration has two processes the evaporation & condensation and it is affected by 2 factors the pressure & temp.. the lower the pressure is the lower the boiling point can achieved. it even boils at 0 deg. C to negative something.. instead of 100 deg C for normal H2O. there must be temp difference to obtain heat transfer during cycle. if the air temp has around 35C then the evaporator will absorb the heat which has a temp of about 5C only. so temp diff.. coz air cond means removal of heat

  • Comment removed

  • why the hell do people vote down on a vid when they are watching it....?? amg, people are so dumb

  • @redman1333 The smart people down-vote videos like this, because they're worthless. You learn more about air conditioners by reading just a single comment in here that is limited to 500 characters!

    If you still don't understand what I'm getting at, tell me... what did you truly learn by watching this video? Was it more than what you learned from reading the comments? lol.

  • Yes this is also quite difficult to understand he chose a complex way to explain it & also talk to fast, there's no time to let what he said 5 seconds ago sink in or register because he's already gone on to the next sentence and there's some thing new to think about their too, so forget what he just said.

  • Why do people have to vote down on a video like this?

  • Comment removed

  • @engine2151

    LOLOLOLOLOLOLOLOL

    Dood u so smart. bout as smaert as mee

  • what if i want to heat my house?

    can someone explain to me how the air condition can do that?

  • @raynhornzxz Heat pumps have a 3 way reversing valve that can actually reverse the refrigerant flow through the coils, making the inside coil either heat or cool. A very non-complex explanation.

    But what i think your asking is how the unit is heating your house. most common from where i'm from is a form of gas-flame heat, which heats air in tubes called Heat exchangers, the blower of your furnace blows air across these tubes to warm the air thats being discharged out your vents.

  • @raynhornzxz Air conditioning is to condition the air, or room temperature, to your desire. The word air conditioning is often used purely for cooling a room, but is also by definition designed to heat a room when desired as well.

    Heating is quite simple..... heating elements (rods), much like a clothes dryer... after they heat up a bit (say, 30s), the heater fan will kick on and stay on for approx 30s after the elements have turned off from when the thermostat temp is reached. That's it... lol

  • The liquid hits the metering device creating a pressure drop turning it into a 25% lliquid 75% gas the change of state allows for heat to be absorbed, 970 btu's worth. The liquid doesn't make the coils cold and the compressor compresses a gas and the heat is released in the condenser where it condenses into a liquid. You need a change of state to absorb heat and a change of state to release heat

  • hilarious stare 0:25

  • i think you might find when the liquid evaporates it absorbs the heat out of the air in the room and releases outside in the condenser. remember...refrigeration is taking the heat out, not putting cold in

  • I'm japanese.I'm「冷凍機械取扱責任者」。ただ、資格を­持ってるだけだけれど。冷却の仕組みは、俺も、そこそこ知ってい­る。

    

  • What determines the BTU rating for a given unit? I have a new 2 ton unit that is much too big. Which components do I need to replace to bring it down to 1.5 Ton.

  • @brightonmusic I'm not 100% certain on this, but I believe it is the combination of all the components that allows a specific AC to have the BTU rating that it does. For instance, how large the compressor is, how large the evaporator and condenser are all significantly influence heat transfer.

    What I am certain on though is that a 2 ton unit holds 2 tons of refrigerant.... a SHIT LOAD! Without completely redesigning the thing, I don't think there is any other way to turn it into a 1.5 ton.

  • too vague

  • Can you do a vid on how i work?

  • I had to watch this like 3 times to get it XD

  • correction.. when the freon vapors come out the evaporator coils its a gas the gas is compressed by the compressor then it goes thru the condenser coils losses its heat and condense into a liquid... because the compressor cannot compress a liquid..

  • Now I finally understand, Thank you

  • I found this very helpful - Thx

  • This is wrong. What happens is that the cold side of the coils (blue in video) has the potential to remove heat it becomes warm and goes to the red side where it evaporates the heat it removed from the room.

  • @UNIVERSITYHI Yes. To elaborate in better english (sorry, lol), the evaporator fan (the blue side), blows the warm air IN THE ROOM over the cold fins ON THE EVAPORATOR (blue side), and so you feel the cool air from the evaporator, while the EVAPORATOR (blue side) IS ABSORBING THE HEAT from the room.

    Because it's a much lower pressure (see metering device), the BOILING POINT IS MUCH LOWER, causing the refrigerant to VAPORIZE (evaporate, per say), which will allow it to go through the compressor.

  • is the air that comes out a pure Oxygen?

  • @humpreystrong No vapors are designed to leave the confines of the AC system. It is a health and environment hazard when that happens. It should NEVER HAPPEN.

    What you are probably talking about is the moving air from the evaporator fan that is blowing cold air out. It is the same air that is in the room, only cold, because it's being blown through the evaporator find, which are cold. Heat transfer.

    So NO, nothing in an AC system is pure oxygen... as also, pure oxygen is extremely explosive!

  • @asdfgoogle hey thanks for answering.. so ur saying that the air we breathe in an air conditioned room is the same air we exhaled (CO2) just recycled to being cold... is it healthy? i mean im always in an air conditioned room... anyway thanks man,, just want to learn ^_^

  • @humpreystrong Well... the air you breath isn't entirely oxygen, nor the air you exhale isn't entirely CO2. In fact, nitrogen makes up the overwhelming majority. For a detailed list of what elements make up our air at sea level, just google "What Is the Chemical Composition of Air?"

    There is absolutely nothing wrong with it. It's 100% the same air that you would be breathing anywhere else in your house, except it's much colder.

  • @humpreystrong By the way, when you inhale, your body doesn't absorb all the oxygen. What that means is that when you exhale, there is still oxygen in your breath. That is how CPR works. It wouldn't work at all if our bodies absorbed ALL the oxygen. Google the chemical makeup of the air we exhale for more info on that.

    Good to hear you're excited to learn though :)

  • watch Full Length Films On boredvip .co.uk

  • The air does what now ?????

  • I know its spelled marshall but isnt martial better? :D

  • ''have you ever wondered what it's doing back here?'' no, it lowers the temperature of the air

  • he looks like irate gamer

  • not good enough explanation klimapoland.pl

  • What did he do with the rest of the Alcohol? ;)

  • i would shit my self is some guys head exploded in school and a spinning world came out

  • @GREENG0037 Thats something you would probably see if you were on shrooms lol

  • happening to salute

  • you look like bilgates but you are more intelligent than William Henry Gates.

  • i lasted 5 seconds saw a queir man posted this comment and cried all day :D

  • a fan blows cool air at you, oooooooooo impressive

  • Charles law: pressure increases; temp. increases - Pressure drop, temp. drops

    compressors & metering devices change pressure in order to manipulate the boiling point of the refrigerant. In order to change from from liquid to vapor, heat MUST be absorbed, and to go vapor to liquid heat MUST be expelled. Pressure manipulates to boiling point in order to bring about a desire for a change of state.

  • Your fired Marshal Brain!!!

    You need to talk to the poop master and study under him. He is located here on YouTube as well.

  • Comment removed

  • my dad was a wise old man so it was okay for him to touch me in the bathing suite area

  • its fentastic presentation no words to say more with help of this video i learn more thanks for uploading such video

    Benguluri. Sudhakar Babu

  • its fentastic presentation no words to say more with help of this video i learn more thanks for uploading such video

  • A great explanation. You now how the air conditioner keeps you cool in the summer months. And if the air conditioner needs repair, you know who to turn to—Horizon Services, Wilmington (Delaware).

  • "if you put alchohal on your skin you can feel the coolness as it evaporates," yeah you can do that with water too ya know XD

  • so... i just bought an expensive box, not knowing anything that it does, and then just randomly have some sort of guy help make it work?

  • mmm that was a shit vid...

  • i bet canadians DONT know what an A/C is

  • actually Canada is the only country with a dedicated HVAC union and trained the winner of the UA World skills competition this year

  • @locomex713

    you are an idiot....

  • @locomex713 Americans don't know what surplus means since they're in deep debt.

  • @7477238 That is because of society. The entire world is in debt? How is that possible, because interest creates money that isn't real. So a country would borrow another countries money (which doesn't make sense, because that country is in debt as well), and then interest is pounded onto the loan, creating more fake money.... it's retarded. lol.

    If you don't believe me, just look it up on CIA Factbook.

    The world needs a RESOURCE BASED ECONOMY, not a money based economy.

  • @asdfgoogle Did I say the entire world is in debt? Maybe you should read the comment I was replying to since some ignoramus decided to comment. No need to give me a lesson in money, I ain't got much ;)

  • @7477238 I got the questionmark placed in the wrong spot there. lol. That was actually a statement. The entire world IS in debt! But I was mostly just saying that in case you or someone else wants to know a little more (assuming the individual reading doesn't already know). I'm sure you were just trolling anyways. lol.

  • he forgot to mention that the expansion valve is what causes the temperature/pressure drop of the refrigerant

  • i got it in my PC

  • Put that in your milk! For your Health.

  • wouldnt the condensor be the whole system outside the house and the compressor be a part of.

  • so if everybody stop using that AC the world will be a much cooler place?

    oh the contradiction, time to have another starburst

  • This was cool. We had a full chapter in our physics book in high school about coolers and how the fridges work. The chapter was difficult to understand and everyone hated it. I wish they had such a video to make our world much easier.

  • @Hamed30000 nicely said!!

  • @Hamed30000 Are you kidding? It's not difficult at all.

  • @TechnologyR0xx0rz It's not now.... Imagine they're going to teach it with no picture or video.

  • @Hamed30000 True. Illustration is key to learning.

  • yeah you're right fellas! he might forgot the condenser and expansion valve i giz...

  • @bigL4ife learn to listen he said liquid into a gas, you are officially retarded

  • thid video is shit..the point to an ac unit is to condition the air not cool it..the cooling is the affect of the conditioning...if tha makes any sense to you at all

  • @crownvvc4 take a chill pill

  • haha. that animation showed a liquid going into the compressor. When a compressor tries to compress a liquid, it goes BAM.

  • It may not be a totally accurate explanation but I'm trying to put it simply since this is Youtube, not NerdsAndGeeksTube. And another thing, fuck Youtube's character limit.

  • The refrigerant, now in its gaseous state, passes through the suction line and back to the compressor. Then the whole cycle repeats again. It is called a suction line because it has a suction effect that makes the refrigerant pass through it. This suction effect is produced by the pressure differential between the compressed refrigerant after coming out of the compressor and the uncompressed refrigerant in the suction line, the beginning and the end of the loop respectively.

  • The flow affects the final temperature of the evaporator. The particle theory of matter states that when a matter evaporates, it takes in heat energy from its surrounding (Takes heat from the evaporator in this case.). The particles become more active and spread out, taking up more space. Thus, it becomes a gas. So in the evaporator, the liquid refrigerant evaporates, producing a cooling effect, dropping the temperature of the evaporator.

  • Thus, it becomes a liquid. The refrigerant in its liquid state then passes through the filter/drier device and then to the capillary tube. The capillary tube as its name states, is a very tiny tube. So the filter/drier is there to remove any foreign particles that may exist in the liquid refrigerant to prevent clogging of the capillary tube. The capillary tube creates a pressure differential to control the flowing of the liquid refrigerant into the evaporator.

  • Let me try and explain correctly. A compressor compresses a refrigerant, usually R-22 or R-410a. Since the refrigerant is still hot, it can't condense yet. So the refrigerant is passed through a condenser which as its name states, condenses the refrigerant as the refrigerant is cooled below the critical temperature. The particle theory of matter states that when a matter in its gaseous state is cooled, it loses heat energy, thus the particles become less active and take up less space.

  • Terrible explanation. I can't believe this is from HowStuffWorks, the website I used to rely on when I was still a child a few years ago.

  • You forgot to mention that you have to switch it on.

  • Isn't it someting like a refigerator or the freezer...the feeling associated with a very large air conditioner could be most uncomfortable to someone lightly clothed. And what about older people with arthritis, coming in from outside, where it may be 30c to a room where it feels like iike it's 10-15 c, worse when a chill factor is taken into account, cause the big fan is on. Explain to me why it feels so chilly and yet the thermo stll reads 21c? What's the name of this gas being omitted?THX