In the ?gure is shown the cycle for a Carnot refrigerator. This cycle is the sam
ID: 2158778 • Letter: I
Question
In the ?gure is shown the cycle for a Carnot refrigerator. This cycle is the same as the Carnot engine except that the direction along each path is reversed. Paths A and C are adiabatic (Q = 0), and paths B and D are isothermal (?T = 0). Consider the working substance of this refrigerator to be an ideal gas. For each path, indicate whether the work W done on the gas is positive (+), negative (-), or zero (0). Also indicate the sign of the net work for the entire cycle. Repeat for the heat Q put into the gas, and the change of internal energy ?Eint of the gas.
Explanation / Answer
in process a & b )work done is by the gas is positive in process c & d )work done is by the gas is negative