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Heat transfer with time variant heat source

Posted May 25, 2022, 4:58 p.m. EDT Heat Transfer, Parameters, Variables, & Functions, Studies & Solvers Version 5.6 2 Replies

Carla Sayuri Matsushita Guimarães
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Hi guys!

I'm trying to make a simulation of a refrigerator but I'm having some problem with the heat source. I want to make it like a real refrigerator (thecompressor turning on and off after some time like the image attached). Do you guys have any tips for me? I haven't found much literature of COMSOL simulations of refrigerators either, so that can be very helpful too!

Thanks in advance.

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2 Replies Last Post May 31, 2022, 10:15 a.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 2 years ago May 25, 2022, 5:12 p.m. EDT
Updated: 2 years ago May 25, 2022, 5:32 p.m. EDT

Hello Carla,

I imagine that the compressor turns on and off based on the temperature measured by a sensor, rather than at predetermined times. If my guess is correct, this blog post on how to use the Events interface should be helpful.

Best,

Jeff

PS: If my guess is wrong and all you want to do is specify a predetermined time-varying input, that's of course also possible, and it's been discussed in a number of past threads in this Discussion Forum, see e.g. this thread .

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Jeff Hiller
Hello Carla, I imagine that the compressor turns on and off based on the temperature measured by a sensor, rather than at predetermined times. If my guess is correct, [this blog post](https://www.comsol.com/blogs/implementing-a-thermostat-with-the-events-interface/) on how to use the Events interface should be helpful. Best, Jeff PS: If my guess is wrong and all you want to do is specify a predetermined time-varying input, that's of course also possible, and it's been discussed in a number of past threads in this Discussion Forum, see e.g. [this thread](https://www.comsol.com/forum/thread/302301/time-function-of-the-lightning-current?last=2022-01-31T19:02:59Z) .
Carla Sayuri Matsushita Guimarães
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Posted: 2 years ago May 31, 2022, 10:15 a.m. EDT

Hi Jeff!

Thank you so much for your answer! The links were very helpfull :)

Thank you again!

Hi Jeff! Thank you so much for your answer! The links were very helpfull :) Thank you again!

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