Physics · Thermodynamics
Which of the following statements is NOT true regarding refrigeration systems?
- 1The effect of sub-cooling (under-cooling) the liquid refrigerant before throttling is to increase the coefficient of performance.
- 2In an ammonia-hydrogen (Electrolux) refrigerator, no mechanical compressor is required.
- 3In a vapour compression cycle, the useful part of heat transfer (cooling effect) occurs at the condenser.✓
- 4The performance of a vapour compression refrigerator varies considerably with both vaporising and condensing temperatures.
Correct answer
In a vapour compression cycle, the useful part of heat transfer (cooling effect) occurs at the condenser.
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