5 A refrgeration cycle is operating between two temperatures

5. A refrgeration cycle is operating between two temperatures (of reservoirs) in Kelvin scale (TH and TC). What is the maximum theoretical COP you can get from that cycle?

Solution

>> We can get Maximum Theoretical COP when refrigerator is working on Reversed Carnot Cycle

>> Suppose, Temperature of Hot Body = Th

& Temperature of Cold Body = Tc

As, COP of Refrigeration = Q2/W = Q2/(Q1 - Q2)

As, in reversed Carnot cycle, Q1/Q2 = T1/T2

So, Maximum COP = T2/(T1 - T2) .........ANSWER.....