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

7.44 kW

3.72 kW

18.6 kW

1.86 kW

7.44 kW

3.72 kW

18.6 kW

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 9

1: 1

1: 3

9: 1

1: 9

1: 1

1: 3

9: 1

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Refrigeration and Air Conditioning
In vapour compression cycle the condition off refrigerant is dry saturated vapour

Before entering the compressor

After passing through the condenser

Before passing through the condenser

After passing through the expansion or throttle valve

Before entering the compressor

After passing through the condenser

Before passing through the condenser

After passing through the expansion or throttle valve

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

Humidification

Cooling and dehumidification

Dehumidification

Heating and humidification

Humidification

Cooling and dehumidification

Dehumidification

Heating and humidification

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

420 kJ/ min

840 kJ/ min

21 kJ/ min

210 kJ/ min

420 kJ/ min

840 kJ/ min

21 kJ/ min

210 kJ/ min

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Refrigeration and Air Conditioning
In a saturated air-water vapour mixture, the

Dry bulb temperature is higher than dew point temperature

Dry bulb temperature is higher than wet bulb temperature

Dry bulb, wet bulb and dew point temperature are same

Dew point temperature is lower than wet bulb temperature

Dry bulb temperature is higher than dew point temperature

Dry bulb temperature is higher than wet bulb temperature

Dry bulb, wet bulb and dew point temperature are same

Dew point temperature is lower than wet bulb temperature

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

Refrigeration and Air Conditioning In vapour compression cycle the condition off refrigerant is dry saturated vapour

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

Refrigeration and Air Conditioning In S.J. unit, one ton of refrigeration is equal to

Refrigeration and Air Conditioning In a saturated air-water vapour mixture, the

Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

Refrigeration and Air Conditioning
In vapour compression cycle the condition off refrigerant is dry saturated vapour

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

Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

Refrigeration and Air Conditioning
In a saturated air-water vapour mixture, the