The coefficient of performance of a refrigerator is 4.1. The compressor uses 30j

Question

The coefficient of performance of a refrigerator is 4.1. The compressor uses 30j of energy per cycle.
If the hot-reservoir temperature is 28 C, what is the lowest possible temperature in C of the cold reservoir?
The coefficient of performance of a refrigerator is 4.1. The compressor uses 30j of energy per cycle.
If the hot-reservoir temperature is 28 C, what is the lowest possible temperature in C of the cold reservoir?
The coefficient of performance of a refrigerator is 4.1. The compressor uses 30j of energy per cycle.
If the hot-reservoir temperature is 28 C, what is the lowest possible temperature in C of the cold reservoir?
If the hot-reservoir temperature is 28 C, what is the lowest possible temperature in C of the cold reservoir?
The coefficient of performance of a refrigerator is 4.1. The compressor uses 30j of energy per cycle.
If the hot-reservoir temperature is 28 C, what is the lowest possible temperature in C of the cold reservoir?

Explanation / Answer

let T = cold reservoi temp

and hot reservoir temp = 28 C = 301 K

so, COP = T/(301 - T) = 4.1

so, T = b = 241.98 K = -31.02 C

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