The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

1.86 kW

18.6 kW

7.44 kW

3.72 kW

1.86 kW

18.6 kW

7.44 kW

3.72 kW

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Low weight per tonne of refrigeration

Higher coefficient of performance

High heat transfer rate

Low temperature at high altitudes

Low weight per tonne of refrigeration

Higher coefficient of performance

High heat transfer rate

Low temperature at high altitudes

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Dehumidification

Humidification

Heating and humidification

Cooling and dehumidification

Dehumidification

Humidification

Heating and humidification

Cooling and dehumidification

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Bigger

Smaller

Equal

Smaller/bigger depending on capacity

Bigger

Smaller

Equal

Smaller/bigger depending on capacity

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Non-toxic

Non-flammable

High boiling point

Non-explosive

Non-toxic

Non-flammable

High boiling point

Non-explosive

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Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Ammonia

Freon

Carbon dioxide

Brine

Ammonia

Freon

Carbon dioxide

Brine

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of

Refrigeration and Air Conditioning The process, generally used in winter air-conditioning to warm and humidity the air, is called

Refrigeration and Air Conditioning The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Refrigeration and Air Conditioning The undesirable property of a refrigerant is

Refrigeration and Air Conditioning A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is