Question Bank • QB_DFE_EXP_055 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Preservation of Food

Subtopic: Refrigeration and cold storage basics and applications

Question Statement:

A cold storage room removes heat at a rate of $20.0\text{ kW}$. The compressor operates with an electrical work input of $5.0\text{ kW}$. The rate of heat rejected by the condenser to the surrounding ambient air in $\text{kW}$ is ________ (answer in integer).

Answer Key:

25

Step-by-Step Solution & Explanation

Energy balance for the refrigeration cycle: $Q_{condenser} = Q_{evaporator} + W_{compressor} = 20.0\text{ kW} + 5.0\text{ kW} = 25.0\text{ kW}$
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