How Do Refrigerators and Heat Pumps Work? | Thermodynamics | (Solved Examples)

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Learn how refrigerators and heat pumps work! We talk about enthalpy, mass flow, work input, and more. At the end, a few questions are solved step by step.
Extrapolate enthalpy: bit.ly/46EHhR1
🔹Internal Energy: • Ideal Gases - Specific...
🔹Energy transfer by mass: • Flow Work and Energy T...
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Books used:
📘Çengel Yunus A. and M. A. Boles, Thermodynamics: an engineering approach. New York, NY: McGraw-Hill Education, 2016.
📘C. Borgnakke and R. E. Sonntag, Fundamentals of thermodynamics. Hoboken, NJ: Wiley, 2019.
#thermodynamics #airconditioner #heatpumps #refrigerator #enthalpy

Опубликовано:

5 июл 2024

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Комментарии : 46

@burgundygiraffe726 8 месяцев назад

so glad to see you posting again, you really helped me understand relative motion analysis and im taking thermo-dynamics next semester so im sure ill be watching a lot more videos. Thank you so much for the help!

@QuestionSolutions 8 месяцев назад

I am really glad to hear the videos helped you understand relative motion. Hopefully, the thermodynamics videos will help you out too. I've been really busy these days so I haven't been able to finish the next video, but hopefully soon, I can upload it :)

@HANTRUONGPHUC 9 месяцев назад

Thank u so so much for those valuable videos. I really love this channel. You help me a lot in study. I dont have enough words to express my gratitude but this channel really deserves more people to know.

@QuestionSolutions 9 месяцев назад

Thank you so much for your kind words! I am thrilled to hear that these videos have been helpful to you. Your support and feedback mean a lot. Keep learning and doing your best! 😊 Also, if you can, please consider sharing these videos with your classmates and friends, it could help them out too, and it will help the channel as well!

@RickC--oo2oz 11 месяцев назад

I don't understand why these vids don't have more views, its such a same to be honest. Great work

@QuestionSolutions 11 месяцев назад

Thank you so much! I really appreciate it :)

@bonkgaming3646 Год назад

I just love your channel and the way you explain things, your channel has helped me a lot throughout my degree, i can't thank you enough bro

@QuestionSolutions Год назад

Thank you very much! I'm really happy to hear these videos helped you out with your degree. Makes me very happy!! Keep up the awesome work and I wish you the best with all your future endeavors.

@deimonfighter 10 месяцев назад

Good videos! I am always waiting for new videos especially for Thermodynamics. Looking forward for Entropy videos 😇👀.

@QuestionSolutions 10 месяцев назад

Thank you for your kind words! I’m thrilled to hear that you’re finding the videos helpful. I’m currently working on the Entropy videos and will upload them as soon as they’re ready. :)

@engineeryarisowchannel8095 7 месяцев назад

you are amazing and I like your videos and the way you explain, you're the best teacher I have ever seen I'm appreciate you. if it possible I would like net time heat transfer, this subject I confused because it has a lot of proves and concepts those apply the example and I'm sure if do this it will be easier I hope you do soon. thank you again

@QuestionSolutions 7 месяцев назад

Thank you very much, I really appreciate it. I will look into the chapter you mention, I am not sure if we cover that or not, but if we do, I will make a video on it. :)

@engineeryarisowchannel8095 6 месяцев назад

@QuestionSolutions ok thanks, teacher I will wait I.a .

@natte431 9 месяцев назад

omg u deserve so much more

@QuestionSolutions 9 месяцев назад

Thank you very much. If you can, please consider sharing these videos with your classmates and friends. It might help them out, and it will definitely help the channel. I would really appreciate it.

@natte431 9 месяцев назад

@@QuestionSolutions i do we watch ur videos together and i SHARE ur playlist to my class and u never disappoint thank you

@QuestionSolutions 9 месяцев назад

@@natte431 Thank you so very much! I truly appreciate it.

@natte431 9 месяцев назад

@@QuestionSolutions I do hope u cover more subjects tho... I dont think i can benefit from them since i past it already but it can be useful for others

@iamsad7714 7 месяцев назад

need video based on entropy

@QuestionSolutions 7 месяцев назад

It's on my list to do :)

@devinotero1798 Год назад

When do you think you would finish your thermo series? I start thermo soon

@QuestionSolutions Год назад

I am unsure. It depends on how much free time I have. So far, for a first year course, about 80% is covered in the playlist.

@EngSereneJibreen 8 месяцев назад

Do you have videos about Block Diagrams Models in control systems ?

@QuestionSolutions 8 месяцев назад

Unfortunately, no.

@yigitcanbaysal824 6 месяцев назад

I have a question here about at 4:30 what do _low temperature medium_ or _high temperature medium_ refer to here? I really appreciate it

@QuestionSolutions 6 месяцев назад

A location, a place, a system, that has a relatively higher temperature than a location, place, or a system that has a lower temperature. So it could be a room, the space inside a fridge, etc.

@yigitcanbaysal824 6 месяцев назад

@@QuestionSolutions One more thing, _refrigerators and heat-pumps_ also operate in a cycle ,right? I mean There's no change from initial to final, so that in our energy balance equation is zero?

@QuestionSolutions 6 месяцев назад

Yes, they do work in cycles, but what do you mean by "so that in our energy balance equation is zero"? @@yigitcanbaysal824

@yigitcanbaysal824 6 месяцев назад

@@QuestionSolutions I meant the right side of our equation, energy change

@AhmedHassan-tz1me 8 месяцев назад

When do you plan to upload lectures for the remaining topics of thermodynamics?

@QuestionSolutions 8 месяцев назад

Whenever I can finish and get them done :)

@AhmedHassan-tz1me 8 месяцев назад

Thank you for your reply! I am taking this course now and I really found your videos helpful so will it be possible for you to get them done in a month? like chapter 6 and 7

@QuestionSolutions 8 месяцев назад

@@AhmedHassan-tz1me chapter 6, yes, I think it's just the Carnot cycle left for that chapter. I'll try my best to get chapter 7 done as well. No guarantees, but I'll try my hardest. :)

@9_mo5yt70 7 месяцев назад

will you do about entropy?

@QuestionSolutions 7 месяцев назад

Yes, I think so :)

@9_mo5yt70 7 месяцев назад

@@QuestionSolutions when, no rush 🌚

@QuestionSolutions 7 месяцев назад

I really hope soon, just been ridiculously busy these few months :(@@9_mo5yt70

@qudhachure9598 10 месяцев назад

would you be able to make videos fluid dynamics or in the near future.

@QuestionSolutions 10 месяцев назад

Thank you for your suggestion! So it's on my to-do list but I really don't know when I would get around to it. I think there might be a lot of videos on the subject on RU-vid as well. So hopefully, they will be helpful to you :)

@user-ui6vz3zv8r 7 месяцев назад

in 7:44 how do i know if the given is Qh or Ql its confusing

@QuestionSolutions 7 месяцев назад

So whenever heat is rejected ("thrown away into the environment") into the environment, it's QH, and whenever heat is taken "away" from some space, like your freezer, that amount of heat is QL.