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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression
All of these
Enthalpy increase in compressor
Work done by compressor

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Gives quiet operation
Requires little power consumption
Gives noisy operation
Cools below 0°C

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Non-toxic
Non-explosive
Non-flammable
High boiling point

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Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Expansion valve
Condenser
Compressor
Evaporator

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Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Odourless
All of the listed here
Non-flammable

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43833
4
43834
3

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