Entropy and Heat


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Tony Ong 3K
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Joined: Fri Sep 28, 2018 12:23 am

Entropy and Heat

Postby Tony Ong 3K » Tue Mar 12, 2019 8:51 pm

9.101 A heat pump heats a house in winter by extracting heat from the cold outdoors and releasing it into the warm interior. For the transfer of a given amount of heat, (a) how do the entropies of the interior and exterior of the house change (increase or decrease)? (b) Which change is greater? Assume that the temperatures inside and outside the house do not change. Explain your answers.

MaanasO 1A
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Joined: Fri Sep 28, 2018 12:26 am

Re: Entropy and Heat

Postby MaanasO 1A » Tue Mar 12, 2019 9:10 pm

Outside entropy decreases and interior entropy increases. The change should be greater outside because it has a lower temperature so q/T is greater outside than inside.

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