Allied & ICAR Exam Bank • ALLIED_1314 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Refrigeration and Freezing

Subtopic: Carnot COP of Refrigerator

Question Statement:

An ideal Carnot refrigerator maintains a food freezing room at $-23^\circ\text{C}$ (250 K) while rejecting heat to the ambient atmosphere at $+27^\circ\text{C}$ (300 K). The theoretical Carnot COP ($COP_{Carnot} = \frac{T_L}{T_H - T_L}$) is:

Answer Key:

5.0

Step-by-Step Solution & Explanation

$COP = \frac{250}{300 - 250} = \frac{250}{50} = 5.0$.
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