Allied & ICAR Exam Bank • ALLIED_1337 NAT • 2 Marks

Section 7: Dairy and Food Engineering

Refrigeration and Freezing

Subtopic: Latent Heat of Freezing

Question Statement:

A batch of 200 kg of green peas with water content 80% ($X_w = 0.80$, free water = 160 kg) is frozen at $-18^\circ\text{C}$. Taking the latent heat of fusion of water as $L = 334\text{ kJ/kg}$, the latent heat of freezing extracted from the peas in kilo-Joules (kJ) is:

Answer Key:

53440

Step-by-Step Solution & Explanation

$Q = m_{water} \times L = 160\text{ kg} \times 334\text{ kJ/kg} = 53,440\text{ kJ}$.
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