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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Condenser
Condenser, absorber and separator (rectifier)
Absorber
Evaporator

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Joule cycle
Reversed Carnot cycle
Reversed Otto cycle
Reversed Brayton cycle

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Refrigeration and Air Conditioning
Vertical lines on pressure-enthalpy chart show constant

Entropy lines
Temperature lines
Total heat lines
Pressure lines

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Smelling
Sulphur sticks which on detection gives white smoke
Using reagents
Halide torch which on detection produces greenish flame lighting

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

Freon-22
Freon-11
CO2
Ammonia

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Expansion valve and evaporator
Condenser and expansion valve
Compressor and condenser
Compressor and evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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