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

7.44 kW

1.86 kW

18.6 kW

3.72 kW

7.44 kW

1.86 kW

18.6 kW

3.72 kW

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour

Before passing through the condenser

After passing through the expansion or throttle valve

After passing through the condenser

Before entering the compressor

Before passing through the condenser

After passing through the expansion or throttle valve

After passing through the condenser

Before entering the compressor

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Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

3 kW

1 kW

2 kW

4 kW

3 kW

1 kW

2 kW

4 kW

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR

0.1 to 0.3 TR

5 to 7 TR

3 to 5 TR

1 to 3 TR

0.1 to 0.3 TR

5 to 7 TR

3 to 5 TR

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Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

One tonne refrigerant is used

One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min

One tonne of water can be converted into ice

One tonne is the total mass of machine

One tonne refrigerant is used

One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min

One tonne of water can be converted into ice

One tonne is the total mass of machine

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Aqua-ammonia

Water

Ammonia

Freon

Aqua-ammonia

Water

Ammonia

Freon

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is very wet vapour

Refrigeration and Air Conditioning A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

Refrigeration and Air Conditioning The capacity of a domestic refrigerator is in the range of

Refrigeration and Air Conditioning A one tonne refrigerating machine means that

Refrigeration and Air Conditioning A vapour absorption refrigerator uses _________ as a refrigerant.

Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour

Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.