The vapor pressure of refrigerant should be_________________?

Byadmin January 25, 2019August 16, 2021

The vapor pressure of refrigerant should be_________________?

A. lower than atmospheric pressure
B. higher than atmospheric pressure
C. equal to atmospheric pressure
D. could be anything
E. none of the above

Refrigeration and Air Conditioning

A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be_________________?

A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be_________________?

A. 0.2
B. 1.2
C. 5
D. 6
E. 10

Read More A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be_________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During adiabatic saturation process on unsaturated air __________ remains constant.

Question: During adiabatic saturation process on unsaturated air __________ remains constant.
[A].

relative humidity
[B].
dew point temperature
[C].
dry bulb temperature
[D].
wet bulb temperature

Answer: Option D

Explanation:

No answer description available for this question.

Read More During adiabatic saturation process on unsaturated air __________ remains constant.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A one tonne refrigerating machine means that

Question: A one tonne refrigerating machine means that
[A].

one tonne is the total mass of machine
[B].
one tonne refrigerant is used
[C].
one tonne of water can be converted into ice
[D].
one tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min

Answer: Option D

Explanation:

No answer description available for this question.

Read More A one tonne refrigerating machine means that
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During sensible cooling of air __________ decreases.

Question: During sensible cooling of air __________ decreases.
[A].

wet bulb temperature
[B].
relative humidity
[C].
dry bulb temperature
[D].
specific humidity

Answer: Option C

Explanation:

No answer description available for this question.

Read More During sensible cooling of air __________ decreases.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively

Question: In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively
[A].

water and water
[B].
water and lithium bromide
[C].
ammonia and lithium bromide
[D].
ammonia and water

Answer: Option D

Explanation:

No answer description available for this question.

Read More In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively
Refrigeration and Air Conditioning

Critical temperature is’ the temperature above which _____________________?

Critical temperature is’ the temperature above which _____________________?

A. a gas will never liquefy
B. a gas will immediately liquefy
C. water will evaporate
D. water will never evaporate
E. none of the above

Read More Critical temperature is’ the temperature above which _____________________?

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