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warrior2014
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Homework Statement
The motor that drives a reversible refrigerator produced 142 W of useful power. The hot and cold temperatures of the heat reservoirs are 20°C and -6.1°C. What is the maximum amount of ice that can produce in 2.2 hours from water that is initially at 6.0°C?
Homework Equations
ΔS= Q/T
The Attempt at a Solution
I converted the temperatures into K, so 20°C= 293 K and -6.1°C= 266.9 K.
I found the efficiency using e=1- Tc/Th= 1- (266.9/293)= 0.089
after this, I am unsure how to solve the problem. Please help! thank-you :)