The physics of air conditioning in under one minute
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- Опубликовано: 2 окт 2024
- Using the ConsuLab EM-2000-YF trainer, we demonstrate the complete r1234yf refrigerant cycle including the change of phase from liquid to gas .
The ConsuLab EM-2000-YF R1234yf Air Conditioning trainer is a complete A/C system with unique features designed to enhance the instruction of air conditioning physics. The trainer uses the H-Block TXV design with R1234yf flow control. The trainer uses common automotive components and can be used in both classroom and shop environments. The trainer utilizes a hermetically sealed and internally protected compressor.
ConsuLab offers four EM-2000 variants, each showing the change of a phase. There's an orifice tube version, an H-Block version, a TXV version and the latest refrigerant r1234YF (demonstrated in this video).
More information: www.consulab.com
Great vid, but I feel like I know less about air conditioning now lol
Exactly 😢
It's a simple concept, just the idea of how it works 😅
Right 😂
That's because we do
Samee hahaha
The h block is basically a thermostatic valve which uses the second stream as the sensing bulb
Nice explanation, never heard of one of those.
I've never seen one of these. If that's what it does, does it work like a TX Valve?
I was about to ask what an H-Block is and why the refrigerant goes through it a second time after coming out of the evaporator. That makes sense. Tnx.
@@BryanTorokyep 😊 the returned gas goes thru and the temperature lowers or raises the pintle for the lower line and thats how it auto manages superheat
In England we call it expansion valve
I've been in hvac for 32 years and never seen a system this full of complexities!😮😂😂
Thats a really beautifully made demonstrational model accompanied with a great explanation! I hope most students get to see/work with these kind of laid out systems. They give a great overlook of the theory, the more hands on the education, the better!!!
The unexplained “H Block” which has to be a TCV with recycle sensing instead of the classic bulb? This is no ordinary Air conditioning system.
Anyone that's not in HVAC, this will sound like mumbo jumbo lol
Yup!
Lmao so true 😂
Just sounds like he’s ranting off a conspiracy theory lol
Sounds like ancient Greek to me
LMAO for real. Only been in HVAC class for 4 months now but still confused. I got no idea how the evaporator cools with air if it's near the passenger area covered up. That's the blower at work cooling it is it not?
I want a old ammonia compressor - the whole scam of changing freon types that force you to upgrade what should last 60 years every 10 years sucks
toyota just reinveted made ammonia engine
I still don’t get it the whole idea of boiling and heat screws me every time
Don’t think as boiling as heat as you know it.
Think as refrigerant as water I don’t know if you’ve ever experienced hiking up in mountains over 13,000 feet elevation Water boils at 187°F you can kind of stick your finger in it for a minute it takes a lot longer to boil an egg almost impossible to make spaghetti soft.
We know sea level makes water boil at 212°F
The boiling of refrigerant is the same thing changes with pressure and temperature they move together.
And the exact opposite water in the air condensates with your drinking glass full of ice on your kitchen table on a warm summer day the water droplets are the same as refrigerant that is vapor and when they strike the glass the water in the air turns into liquid water and pours down the side of your glass on the outside
When that hot refrigerant goes into that condenser at 140°F or 160°F the inside walls of those copper tubes are being cool down by the fins that might have 80°F air blowing over them making the surface of the copper on the inside cold and that hot high-pressure gas touches the inner tubes of the copper walls the exact same as the air touches you’re drinking glass and they start condensating and cooling down back into a liquid.
To teach yourself exactly what is going on inside all the tubes imagine yourself as a molecule of refrigerant and what state of change are you going through as you travel throughout the circuit imagine your temperature and imagine yourself turning from a liquid into a gas and back into a liquid again.
Dry-ice temperature-range
Put dry-ice into water = see boiling = frigid = ratio-versus = relative-to room-temperature, boils dry-ice.
Air-gas(not gasoline but propane, methane, butane, LPG, CNG, LNG, ...)
= during compression, heat-generated
= when compressed is room-temperature
= when release-decompression(LNG,CNG especially or butane-propane cigarette-lighter-gas) is cool-supercooled
Decompression in radiator(evaporator)-piping(with fins) causes metal-radiator and the refrigerent to "freeze" but it is gaseous and not-water at room-temperature. Air-flows through the outer-metal-parts and gets cooled (similar to air fan flow through a computer CPU heat-sink)
Mod-hack LPG-propane the home-invasion air-conditioner refrigerent.
Not needed
= radiator, piping, radiator, piping, radiator
= Water generator (evaporator dripping tray and hose) is air-cleaner (moisture scrubbed from air results in dirty-water - filtered air)
= Piping in twos, 45deg angle, 5mm gap in between parallels for air flow between 2 pipes, bottom-of-top and top-of-bottom join at sides to form a single flow direction (U-joints same as fridge), fins are mounts to hold pipes apart, spaces are easy hose down, environment sand gauge, ...sandwich 2 sets between two slow fans, above and below fan-axle with gap(fan-axle) between sets for air-pull-air, ...
Oh, receiver-dryer is for the home-invasion person... if LPG...
It comes out of the condenser as a sub cooled high pressure liquid
Boil is used the same as evaporate. If you put rubbing alcohol in a cup it sits there and eavporates slowly and no noticeable cooling occurs. Wet your skin and the alchol evaporates quickly by absorbing heat from your skin. A/c evaporator is a stress environment for the refrigerant as a low pressure liquid to boil when heat can be absorbed to boil it. Now the refrig is a gas and has warmed a little. Compressor moves the refrigerant and also puts it under pressure and adds heat from compression. This high pressure gas is now a gas that is streesed and tends to liquud state if it can shed heat. The temp difference of the hot gas to ambient air temp encourages heat loss since temp difference affects geat loss. Air passing condenser is tje waybthe heat is lost to the passing air and stress is reduced and it changes to liquid and is clost to ambient temp, maybe lower. This liquid refrigerant now is restricted by expansion valve or orifice and passes through the ev or orifice restriction and now is evaporator to begin liquid to gas phase change again. 1234yf is a tad bit more difficult to do the gas liquid phase change so an additonal condensing unit is used. The liquid line goes through a heat exchanger that is a tube within a larger tube with cooled gas flowing in inner tube and liquid that may still have some gas flowing in outer tube. The two layers are separate. The last bit of gas should condense with the additional cooling. Also, liquid going to compressor poses a risk of liquid locking compressor so the hest exchanger can at times be evaporating any remaining liquid on low pressure side.
I didn't understand not even a thing 😂😂😂
I open my freezer everyday wondering how the air comes out cold. Blows my mind everytime. 😂😂 I just want to fully understand this.
@@nikkiluv6435there is a temperature pressure relationship with liquids/gasses. More pressure? Gets hotter. Less pressure? Gets cooler. The real magic comes in with the compressor and a small orifice. The compressor compresses the gas so much, it condenses into a liquid and gets hot. The outside air passes over this and obsorbs some of the heat from the refrigerant. From there it goes back inside the home and the compressor is whats pushing it there, though here it runs into a small orfice, like a garden hose set on mist, this lowers the pressure of the liquid refrigerant so much that it boils into a vapor, this low pressure vapor becomes very cold due to the temperature pressure relationship. The air in your home is passed over this, and the refrigerant obsorbs the heat inside your home, cooling the air down.
Theres a bit more to add to this about saturation temperatures, like at which temp does it boil or condense. The higher the pressure, the higher the temp must be for it to boil, the lower the temp must be to condense. The lower the pressure, the lower the temp must be for it to boil, the higher the temp must be to condense.
And then theres superheat and subcooling which is the amount of heating or cooling of the refrigerant is happening after the condensation or evaporation, but I imagine I have already lost you 😂
@@nikkiluv6435its about getting the liquid to the right pressure, after that it only takes a few degrees up and down to change it from a liquid to a gas, that change pulls a lot of heat with it and is blown out as “hot” but really warm air. Look up water boiling at room temperature, then you’ll understand better how pressure can change the boiling point of a liquid
try and keep up....something something blow air over it.
@@nikkiluv6435you have to understand boyles ideal gas law then its not hard yo ynderstand
I remember having to build out a refrigerator like that from scratch in school.
Videos like this, while great, show me just how dumb I am, lol. Definitely respect for those who work in trades and learn all of this.
They don't show how dumb you are, they show how dumb people are when it comes to explaining things clearly. This video was a complete mess.
When a liquid changes to a gas (evaporates), it absorbs a large amount of heat from its surroundings.
Conversely, when a gas condenses to a liquid, it releases this heat.
We can help this process along with fans and compressors.
The R1234 he's talking about is the gas they use. It has an extremely low boiling point (-20F, -29C) So it can absorb heat at very low temperatures.
Not dumb, just uninformed. the only difference between a master and a beginner is knowledge. and anyone can gather knowledge. Just because they sat down and read a book about it doesn't mean they are smarter than you :P
@@stevenlarson3316thank you for this.
Thank you alot i just got a job opportunity to work with industrial air conditioning , thanks to you this makes alot more sense@stevenlarson3316
1930s training videos were the best
I like how they say "twelve thirty four" because it sounds more serious business than "one two three four" 😂
Nothing better than R22 AND R12
I prefer R2D2 myself.
I prefer 502
The thing with R12 is that it wasn't a lazy like 134a so sitting in traffic on a 95° degree day you are freezing your butt off 134a on the other hand you'll be sweating. I'm honestly pretty impressed with 1234yf in both my cars
@@vvti18 sounds like an improperly designed system to me... Prob. Undersized, or they dropped r134a into a system designed for CFCs without other alterations.
My car has r134a with a properly sized system and inside the cabin I've always been chilly even in 42°C weather here in Italy (it's a Toyota)
@@vvti18my grandad had an old Chrysler that if you left the AC running on the coldest setting for too long the condenser would ice over on a 100° day 😂
For an explanation for the lay person, this is a bit overcomplicated. Yes all those parts are required for an efficient reliable system, but thats a lot more than is needed to demonstrate the cycle...
My school had something similar but it was just both coils, filter drier, txv, and the compressor. I understand all of this now but it was easier learning with it stripped to the basics and adding components after we had the understanding of how it works
Expansion Valve is the key to understanding any system.
What is happening AT expansion tells you everything about the system.
All the extra bells and whistles you won't need in the field 😂
What's the reason for the internal heat exchanger? Why would you want to heat up the incoming charge? Trying to cool down the incoming gas to the compressor?
The more heat you can send to the compressor the more heat the condenser can expel.
It's doing the opposite.
The gas leaving the evaporator is cool, while the liquid leaving the condenser is hot, so you are cooling the liquid down, which allows it to absorb more heat in the evaporator.
It is basically taking some of the heat from the compression cycle and short circuiting it directly back to the compressor so it bypasses the cool side of the system.
Never gets old
I lost him at the start. Looks so complicated that I don’t want to deal with it. Who needs air conditioning anyway. 42 degrees Celsius today.
Heat exchanger
= oops, radiator, oops condensor, yikes, heat-exchanger, oops, evaporator, oops terminologies, yikes, heat-exchanger
Damn so this is what's in my textbook?
Me thinking I can fix my own AC. 😂
Awesome job thank you so much
Still don't understand how it works
the only thing i understood was before the donkey can eat the grass the mouse must fall out of the tree
Ur hired
😂😂😂😂
Like what you just did there 😂
I’m cross eyed.
Expansion valve evaporater dryer fan.😢😮😅😊
So how does a propane refrigerator work?
Compressor actually makes refrigerate hotter for greater condenser temp differential.
I watched this on multiple loops 🧠
What's going back in to compressor gas or liquids?
Always a gas
It better be a gas, or you’re going to ruin your compressor
Liquid can’t be compressed. If you try to the compressor ends up compressing itself lol.
Liquid can't be compressed, thats why in car brakes you bleed the air out, because air is compressible.
Also that gas actually cool down the compressor also.
That is great
I am still baffled but very neat, thank you
I just learned a thing!
Did you really though
I found the explanation very confusing. How did the liquid leaving the condenser become high-pressure and high-temperature? Isn't the condenser's job precisely to get rid of the heat? And wouldn't that makd the liquid plain condensation?
So my big window unit went was 9 years old was a 220 just blowing warm air what would say was the problem??
Low on Freon or regulator or check valve ?
I’m
Updating to a Mr Cool Douglas #MIN split end of August I put an ac unit in that o had on hand.
Translation “your older r12 and 134a systems that lasted 20-30 years are gone. The new systems will now last 10 before you have major issues with parts and leaks” 😂
THANK THE GOVERMENT
Why dont they make a mini split for window ac so 98% of the window can be closed? Closest things are the U shaped and Saddle window AC. But what if your window slides horizontally?
What are the pressure differences between r134 and r1234?
Different properties
Make it make sense 😮
low temp high press enters the H block which meters the high pressure into low pressure, IT DOES NOT REDUCE TEMP OF THE REFRIGERANTS thats what the condensor does. SO it cant enter hot leave cold, it enters cold with high pressure leaves cold with low pressure.
Well it leaves even colder after the pressure drop...the condensor just cools it down to ambient
Mr madison, what you have just said has left everyone in this room Dumber . First thing I learned as a newbie was that a drop in pressure equals a drop in temperature.
But it does though.... Are Guages are proof of that.... Pressure has relation to temperature.
You're thinking of subcooling which is correct, but subcooling is there for us to ensure we have no more vapor refrigerant, and we do that by using Guages, on the service port and thermometer on our discharge line....
you lost me
The reason it is complicated is that an air conditioner removes heat almost more than it adds cool...just adding cool on a muggy day is like blowing water into your house...at some point your pictures on the wall will curl.
Me thinking how cool could it be to create an AC by myself
Watching this video: 😮💀
$75 with tax for a 12oz can of this crap. Glad I don’t have a car with this refrigerant!
Just to remind me further, this is the working of ac in current time, not outdated so as to think yourself you are foolish. Deep
So this is why it cost so much to get my ac in the car fixed... I'm getting an order car f-this new stuff yeah they might be nice but the old was just as good
theres nothing hard about condencing gas into high temp gas and then condensing it but wheres the capilary tube that releases the gas alowing it to expand which absorbs heat because thats how pressure acts ? and all of you are in the comments not noticing he didnt explain it right? wheres the capilary tube releasing the .
the ihx is where the meeting location between the hot gas that is coming from the condenser to meet with low presdurure low temp on its way back to the compresdor ,no ,its the opposite ,idk ,
Except your wrong. When the refrigerant comes out of the condenser it is not a high temp liquid.
Tako si objasnio da ne može biti komplikovanije.
Napiši tačno šta mi treba i kako napraviti sebi klimu od sto jeftinijih delova.
I pitanje;
A gde odlazi topao vazduh i koliko je to štetno za prirodu?
Great 🎉🎉
😕 Unfortunately I only learned my IQ is not high enough to understand what I just heard.
R290 is king!
Now everything is fucked up with electronic boards
Union members voting for trump is the same as a roach voting for a can of Raid...
Worst description ever 😂😂 do you even know what you are talking about ??
Its not nearly as complicated as what he's saying. Do your own research
Who sat down and thought about on how to do this?.
an engineer with good knowledge in thermodynamics.
Mr Carrier. “Boiling off” or catching heat in the evaporator and transferring that heat outside to the compressor/condenser section is magic.
@@smokeysmith1282 1902, mr Carrier was tired of drinking warm beers
High pressure high temperature “gas”? Gas? What kind of gas?
More complex and more expensive to fix cause more parts needed to be replaced to fix it properly
no comprende
Poor explanation I understand refrigeration and that was poorly explained
Wait I thought the receiver was only if it isn’t subcooled enough
This is more like someone trying to impress people than trying to explain something to people.
imma act like I understood everything he said
Interesting video but now Im getting dizzy spells.
great if you have any needs you can learn about our products
It doesnt get any simpler than Hvac!
How about a none electric one, a solar one, patented CM👍
Internal heat exchngr?, H block?
Accumulator?
You should explain first how this is different from modern residential, nd commercial processing 😮
Good trainer especially including the latest refrigerant with internal heat exchanger in multiple see-through glass tubes
Thank you! it was an important part of the product design. It makes it so much easier for students to understand the magic.
@@Consulab you said the gas comes out of the condenser with high pressure high tempereture
But mr the gas has hi p lo temp so that it would be liquified
@@Fullmoons-o9rit's under pressure, so it can have a high temperature and still be liquid.
Have you ever grabbed the liquid line after the condenser? Lol
what.....?? not very explanatory....elaborate...
Thank for nothing didnt understan single word
this is too much for my brain to handle
Wait so houses use same refrigerant type as cars?😮
Better use R600a instead of this ...
thank you for the knowledge, greetings from me ac technician in Indonesia
He just made me even more confused...😂😂
This video makes me more confused.,
After condenser refregerant high pressure and normal temperature
An ironic question:
When I spray water on a coil, why does vapor condense on the evaporator while water evaporates on the condenser? 😂
so this is why dust effects how you fridge cools.
H block? You mean TXV?
He sounds almost like homer simpson
Good, makes absolutely zero sense
So basically compressor putting in the air is from the atmosphere of the room fridge is placed in ???? What say dude
The compressor is pumping a vapor refrigerant through it. This is changed to a liquid refrigerant in the condenser and eventually back to a vapor in the evaporator, where the cycle loops afain
Хладагент покидает конденсатор в жидком виде с высоким давлением но не высокой температурой
Got it gonna show my teacher lol
True air conditioning
The heck does evaporator mean?
Why such complexity ?
Can you say that again really slow.
Seems simple not much change
You explained it so well, even a high school student will understand the basics physics and the refrigerant cycle of an Air conditioning system. Keep such videos coming .
Thanks for your sharing....
No need for an expansion valve??
What's the point of the IHX?