Can't believe this ~4 minutes video is better than whole lecture by my teacher.

0:46 adiabatic expansion 1:38 isothermal expansion 2:12 :adiabatic compression 2:41isothermal compression

As a mechanical engineer I appreciate you to make me understand refrigerator function so easily..

This video starts in an unusual manner, but honestly its fully accurate. They could and should talk about refrigerants, but overall for a 4 minutes video its pretty nice.

To all which are asking themselves what's up with the grammar of the narrator: this is an Indian KZfaq channel. They make the script and animations themselves, but they use third-party services for the voiceovers. Some voiceover services use a pay-per-word model. Regular prices are $1 per word, that's why they omit redundant words in their scripts. Less articles (as in grammar) = more keywords for the same money.

You just saved my Bachelor Degree.

Even After completing my degree i dont understand how refrigerator works, but after watching your video i simply understand

Very thoughtful, thank you -- your explanation is made even more efficient by taking out all the definite and indefinite articles.

I never understood how you can use energy to remove energy, I mean that is against laws of thermodynamics(?). Now I understand. Thanks for the great video!

I am so thankful I did an automotive air conditioning course. This is literally the same thing!!!

i love you thankyou so much. 4th year eng student understanding this for the first time rather than a mindless process with numbers

I graduated as a chemical engineer and worked for many years but this is the best explanation of the refrigeration cycle I have ever heard in my entire life

8/8 english

The best explanation can say, i was scratching my head to understand this from a long time, but he did it awesome and cleared in such a small amount of time 😊

This guy doesn't say the word "the" very often...

Seriously Amazing work! I was having trouble understanding this topic just by reading the boring theory in my textbook but you really made it easy. CHEERS!

Pointing out grammatical errors in a video aimed at explaining working of a machine is just stupid. Thank you for the video, it was a great help.

I had a break through! AMAZING!

this is the best video that explains the cooling effect in youtube so far. after the left liquid for heat absorption inside the refridger turns into the vapor (vapor still looks cold enough at this point), but as soon as this vapor goes back into the compressor, and this vapor becomes hot and needs to go the cooling fins outside the refidger? why does it become too hot all of sudden? (that was what you showed, a bluish ball to a red ball). compresssion makes gas hot but.. it still seemed cooler than 1st starting point

This is literally great work .Sir you had saved my course of HVAC

What a great video uploaded! Amazing work dear friend. Thanks for sharing such a nice video.

When i learnt thermodynamics all i learnt was the T-S diagram and how to compute efficinecies. I dint know where heat was absored or released or why pressure had to be lowered or increased. This is such a game changer.

Can't believe really a good video about refrigeration in 4 mins

I am human. I never use article or quantifier in sentence.

this is what inside a refridgerator

I love coldness and refrigeration🥶 Thank you Thermodynamics

So much informative video,.❤️ May Allah bless you..😇

Este vídeo me ayudo demasiado , muchas gracias a sus creadores por compartir el conocimiento con los demás. Thank you very much for sharing this videos. It was a really helpful information. Greetings from Medellín, Colombia.

Finally a video with English and not some hindi

Was this written in Chinese and subsequently translated to English?

Thank you! I am going to try to attempt

Thanks for the video, I am a HVAC student at Ivy Tech. I love the trade I am learning, thanks for the video. Not that much different from a home AC unit.

What is with the distinct absence of articles throughout all these videos? With all the "the's" and "a's" missing, it sounds stupid.

hope this inventor got a nobel prize

Thank you very much. It is a simple and easy to understand the fundamentals of the refrigeration syscle. It helps me to understand about the refrigeration principles. Thank you.

It left out the air flow across both coils by use of evaporator & condenser fans. Other than that it's a good video.

Awesome and easiest explanation.

hope to see the selfpriming pump technology soon :D

I had got to know that what is inside the fridge thank you for giving such a nice video

I’m from Italy and I will have an energy exam in two days. Thank you guys

The T-s diagram and P-H diagram of vapor compression cycle explains the refrigeration phenomena better. First, the throttling device lowers the pressure of the refrigerant tremendously (High pressure liquid ---> low pressure saturated liquid-vapor mixture). The energy (heat) from the refrigerant is released and as a result its temperature drops tremendously. Next, the evaporator makes the cold refrigerant absorb heat from the foods (keeps food cold) which occurs in the inner compartment in the fridge (liquid-vapor mixture --> pure vapor). Next, the vapor is compressed by the compressor to a very high pressure back to its initial value and its temperature is also increased tremendously as a result (low pressure vapor --> high pressure vapor). It also maintains flow of the refrigerant through the whole system. Next, the condenser rejects the heat from the high pressured fluid and as result its temperature lowers (vapor --> liquid transition). Finally, the refrigerant approaches the throttling device as a high pressured liquid and the process repeats.

I am proud to find out there is an indian behind this channel.

it was very helpful for my B Tech.....thanks a lot

There is no such icon for number of likes ,otherwise I could give thousands of Likes.

THE THE THE THE THE THE THE GODDAMNIT THE

To help understand the process of refrigeration first let's talk about the 2nd law of thermodynamics heat moves to what is colder lower then 1* degree difference..so a evaporator coil is 35* f* and the air going across it is 40* the evaporator absorbs the heat from the product to be cooled causing liquid to turn into a low pressure,low temperature,super heated vapor entering the compressor which cools the Hermetic compressor discharging high pressure, high temperature, superheated vapor entering the condenser coil 100* degrees, where the absorbed heat from the evaporator and compressor is now rejected by catching a ride on 90* degree air. Remember."Heat travels to cold") leaving the condenser a subcooled liquid, traveling through the filter drier to collect any moisture or burrs (hope not) then maybe a sight glass so u can see liquid going to the metering device where a pressure drop occurs liquid,vapor called flash gas to the evaporator coil for the process to continue called..Refrigeration Cycle

Wow nothing can be more simplified

Most refrigerators will use for the defrost cycle is a heating element and a (bimetal) defrost thermostat (located on the evaporator) which controls the flow of current to the defrost heating element based on temperature. The compressor run time and defrost cycle is controlled by a defrost timer or an ADC (Adaptive Defrost Control), which will stop the compressor and both, evaporator and condenser fans and energizes the defrost heating element(s). The defrost heating element(s) will only energize if the bimetal (located on the evaporator) is closed. Again, this is based on the temperature, since if there is no ice to melt, it is likely that the bimetal will remain open and just allow the remaining frost to melt naturally.

Very good over view of refrigerator working. Thank you.

Thanks sir. You solved all my doubts

Perfect video for understanding Refrigeration

you just saved my life.

The nozzle engineer is full of swag...

What glorious Engrish is this!

U make the best video on different engineering concepts....Good work sir.

Great video, thank you very much , note to self(nts) watched all of it 4:16

Excellente vidéo, très bien résumé! très compréhensible.

excellent explanation by learn engineering. im currently working on some research on district cooling and kind of lost but this video helped me quite a bit

شكرا جزيلا على جهودك . تفصيلات مهمة وجيدة .

this video is fantastic and how any refrigeration understand wiring

This 4 minutes video is better than 4 hours whole lecture of your teacher

It was an amazing lecture,understood the working very well.

Its a awesome explanation and presentation. You made me to understand in clean and dedicated way. Thanks a lot to you learn engineering organization 😊❤️💛💚🌻💐

Superbly explained. Cheers.

brilliantly explained a lots of thanks

Love your videos! They help me a lot in understanding the basics of things that we take for granted. I wish you can do more videos about electricity :)

So does this mean if I put a pan of boiling water inside the fridge could the absorption make the system overheat?

very systematic explanation👏👏

Good , simply superb

Hearing this guy speak is like listening to a foreign guy who's been living in the U.S. almost long enough to sound American.

thank you for your presentation

Very nice explanation...............

very precised and good one...

I love what You're doing, Keep going!

You achieved what you were trying :)

Just awesome thanks 🙏

Science 9 Heat & Work Thanks for this information it's really helpful!! ❤️❤️

in the final process, the heat exchanger in the outside of the refrigerator, you said : " The air becomes liquid and the temperature turns back to normal " I get the temperature cause it's the heat exchanger but i dont get why the air becomes liquid at that point

What animation software did you use? Great video by the way.

are air conditioners exactly the same but with a fan?

Thanks for this interesting video, really good...:)

It was very helpfull. Thank you

For all electrical appliances to prevent any accidents or misuse

During summer I wish that condenser part was out of house. Also, the condenser part is really noisy and sometimes bothersome. May be we should put cold air production in the basement and then distribute it anywhere it needed through airduct tube.

easy to understand fr 1st year engg students...

Thanks man

Good vdo! Pls make some more video on refrigeration and air conditioning

It would be nice if this were in English.

thank you so much for helping us

very good explaination

Hello, nice video but a comment I'd like to point out please. After the throttling device, the properties of the liquid are -20 °C at 0.6 bar (see 0:58 - 1:30). When the liquid goes into the evaporator coils, the contents of the refrigerator (e.g. food) are hotter than the liquid (refrigerant) so the liquid will absorb the heat from the fridge and turn into a vapour. Now the properties of the vapour are T>-20 °C (due to absorbing heat) at 0.6 bar. My question arises how is the refrigerant still a vapour at -20 °C at 0.6 bar (see 2:18 - 2:35) when it was a liquid at -20 °C at 0.6 bar (after the throttling device see my second paragraph). Shouldn't the temperature of the vapour at the inlet of the compressor be at a temperature greater than -20 °C to exist as a vapour? A more reasonable temperature would have been 5 °C. I look forward to hearing back from you. Thank you.

Thanks for your clear explanation of Airflow in a Refrigerator. I have one rather important question I would like to ask. Your Airflow where does the Air come from. Is it normally a Close Loop System where the Air is constantly re-circulated by the Evaporator Fan in the Fridge, or is Fresh Air Intake going on so that the Evaporator Fan is constantly pulling Fresh Air from the Outside and blowing it through the Evaporator Coils inside the Fridge. Also if it is not a close Loop System and the Fresh Air is constantly being sucked in from outside , is it vented out as it is recirculated inside and replaced by a fresh stream of air. Thanks

Excellent videos!

Nice explanation Thank you 🙏

Doktr Your Vigilant Response made me Make a responsive Claim thank you for your serious attention

Just amazing thanks

Amazing video 👏

Compressor wouldn't raise the pressure back to initial value it will raise the pressure more than it's initial value so that it will reject the amount of heat it absorbed then use rest of the increased temperature for the latent heat to change its state from vapour back to gas. Thankyou

Thank you. Very nice video

Nice video and explanation..