Allied & ICAR Exam Bank • ALLIED_1319 NAT • 1 Mark

Section 7: Dairy and Food Engineering

Refrigeration and Freezing

Subtopic: Refrigeration Tonne

Question Statement:

One Tonne of Refrigeration (1 TR), defined as the rate of heat extraction to freeze 1 short ton of water at $0^\circ\text{C}$ in 24 hours, is equivalent to approximately:

Answer Key:

3.517

Step-by-Step Solution & Explanation

$1\text{ TR} = \frac{2000\text{ lb} \times 144\text{ BTU/lb}}{24\text{ h}} = 12,000\text{ BTU/h} = 3.51685\text{ kW} \approx 3.517\text{ kW}$.
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