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a) An inventor claims to have developed a refrigeration system that removes heat from the refrigerated space at −12∘C an
Posted: Thu Jul 14, 2022 2:40 pm
by answerhappygod
- A An Inventor Claims To Have Developed A Refrigeration System That Removes Heat From The Refrigerated Space At 12 C An 1 (64.2 KiB) Viewed 32 times
a) An inventor claims to have developed a refrigeration system that removes heat from the refrigerated space at −12∘C and transfers it to the surrounding air at 25∘C while maintaining a COP of 6.5. Is this claim valid ? Why ? [4 marks] b) Three heat engines EA,EB and EC receive heat from a reservoir at 627∘C and reject heat to a reservoir at 27∘C, as shown in Figure Q2. The thermal efficiency of EA is 0.20 while EB and EC operate on the Carnot cycle. Determine i) the power output of engine EA( kW) ii) the maximum power output of engine EA when rejecting 100 kW of heat to the sink at 27∘C(kW) iii) the rate of heat supply to engine EB (kW) iv) the rate of heat rejection from engine Ec(kW)