A carnot engine having an efficiency of 1 by 10 as heat engine is used as a refrigerator if the work done on the system is 10 shows the amount of energy absorbed from the reservoir at lower temperature is
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carnot Engine efficiency
where Q2 is heat energy rejected at low temperature reservoir and Q1 heat energy absorbed at high temperature reservoir.
hence
coefficient of performence of refrigerator α =
In refrigerator the workdone W = Q1-Q2 and
Hence Q2 = α×W = 9×10 = 90 Joules
where Q2 is heat energy rejected at low temperature reservoir and Q1 heat energy absorbed at high temperature reservoir.
hence
coefficient of performence of refrigerator α =
In refrigerator the workdone W = Q1-Q2 and
Hence Q2 = α×W = 9×10 = 90 Joules
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