Multiple temperature reservoirs

  • Thread starter cabellos
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1
I have a problem:

A typical compartment domestic refrigerator with freezer can be represented by 3 temperature reservoirs connected to the cyclic device which absorbs W' of work.

- cool box at Tc = +279K from which Q'c heat is extracted
- freezer at Tf = -269k from which a further Q'f heat is extracted
-Domestic ambient surroundings at T = 298K to which Q'rej heat is rejected

Assuming ideal reversible performance calculate the maximum physically possible rate of heat extraction Q'f (W) from the freezer compartment for Q'c = 100W

How do you calculate this WITHOUT knowing Q'rej is the first place???

confused :confused:

thankyou for your time,

Cabellos
 

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