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In what situation does higher power provide lower peak temperature?

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I've ran a simulation regarding microwave heating with different powers. The results shows that higher power reaches its peak temperature faster than lower power (which is normal) but the values of peak temperature for higher power is lower. Can anyone tell me why is that? I am heating a group of samples

Thank you


1 Reply Last Post 27 mag 2022, 13:26 GMT-4
Robert Koslover Certified Consultant

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Posted: 3 years ago 27 mag 2022, 13:26 GMT-4

I encourage you to post your model to the forum for a more reliable assessment. I (and probably no one else here either, unless they know you) simply have no idea of the details of your specified mechanisms for the heat absorption and loss that are involved, or how much energy you are applying overall in each case. I suspect some of those things might matter. Does your higher power in a shorter time actually correspond to less energy delivered? The temperature of an object depends not just on how much power is applied, but for how long, and how it otherwise interacts with its environment. And that's just on the physics side of things. That ignores the potential for thousands of kinds of possible errors that could arise in the way you have set up the problem. Posting your model to the forum is thus a good idea.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I encourage you to post your model to the forum for a more reliable assessment. I (and probably no one else here either, unless they know you) simply have no idea of the details of your specified mechanisms for the heat absorption and loss that are involved, or how much energy you are applying overall in each case. I suspect some of those things might matter. Does your higher power in a shorter time actually correspond to less energy delivered? The temperature of an object depends not just on how much power is applied, but for how long, and how it otherwise interacts with its environment. And that's just on the physics side of things. That ignores the potential for thousands of kinds of possible errors that could arise in the way you have set up the problem. Posting your model to the forum is thus a good idea.

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