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CGP EDU Academic Team
Published on: September 12, 2026
In a mechanical refrigerator, the low temperature coils are at a temperature of – 23°C and the compressed gas in the condenser has a temperature of 27°C. The theoretical coefficient of performance is
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A
$Coefficient of performance K = \frac{T_2}{T_1 - T_2} = \frac{(273 - 23)}{(273 + 27) - (273 - 23)} = \frac{250}{300 - 250} = \frac{250}{20} = 5$
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