How Air Conditioners Work? (Fundamentals Explained)

[@paulakoh4870]

I'm happy that you've brought your well of knowledge to KZbin. Thank you Engr. You're amazing

[@winifredMLS]

This really helped me wrap my head around some of these concepts. I got lost with the graphs but they seem like they would be great for mechanical engineers learning about air conditioners. Thank you Yu :)

[@manodullavin177]

You are such a great instructor in teaching this things. I really appreciate it. You are very clear in giving information. Thank you and I hope you will continue teaching all of the information about air conditioning. See you!

[@aircondlounge]

I will!

[@memomavitag]

excellent explanation.thank you !

[@thomasvictor1091]

Great job!

[@wisdom_wellness365]

Very nice! I like it!

[@aircondlounge]

Awesome!

[@kktan88]

Great Video. I love to understand how to maintain comfort and save energy by controlling multiple ACs in a big space with different heat loads (example F&B). Thank you.

[@aircondlounge]

Thanks KK. Sure, I’ll work on it.

[@retiredperson4054]

Good job YU!

[@mhrussell1]

Really enjoyed the video. I thought you were going to explain at the end how the load is controlled. My question is I know we need a higher compressor output pressure on a hot day because when need to be able to have the outside air condense the vapor so it needs to be at a higher pressure to allow that to happen. What "controls" the compressor output pressure?

[@aircondlounge]

Thanks for your question. There’s nothing that controls the compressor output pressure. On a hot day, the heat rejection rate reduces which causes the system to naturally operate at a higher pressure. The air conditioner will continue to operate as long as it is within the design range. However, if the temperature sensor at the compressor discharge line detects a temperature exceed the design threshold, the electronic control board will slow down the compressor which will prevent the pressure from going overboard.

[@mhrussell1]

@@aircondlounge I guess that still does not quite answer my question, I think. What is the feedback mechanism that causes the pressure to rise as the outside temperature increases? It seems at first that there would be less subcooling. What does that cause? Less flow through the TXV? Or something else?