Refrigeration and Air Conditioning

Freon group of refrigerants are___________________?

Byadmin January 25, 2019August 16, 2021

Freon group of refrigerants are___________________?

A. inflammable
D. toxic
C. non-inflammable and toxic
D. non-toxic and inflammable
E. non-toxic and non-inflammable

Refrigeration and Air Conditioning

In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?

In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?

A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or thiottle valve
D. before entering the expansion valve
E. before entering the compressor

Read More In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During sensible cooling of air, the relative humidity increases.

Question: During sensible cooling of air, the relative humidity increases.
[A].

Yes
[B].
No

Answer: Option A

Explanation:

No answer description available for this question.

Read More During sensible cooling of air, the relative humidity increases.
Heat Transfer | Mechanical Engineering | 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

Question: 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
[A].

1 kW
[B].
2 kW
[C].
3 kW
[D].
4 kW

Answer: Option D

Explanation:

No answer description available for this question.

Read More 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
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a vapour compression system, the condition of refrigerant before passing through the condenser is

Question: In a vapour compression system, the condition of refrigerant before passing through the condenser is
[A].

saturated liquid
[B].
wet vapour
[C].
dry saturated vapour
[D].
superheated vapour

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a vapour compression system, the condition of refrigerant before passing through the condenser is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100° C and leaves at 60° C. A cold fluid enters the heat exchanger at 40° C. The mean temperature difference between the two fluids is

Question: A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100° C and leaves at 60° C. A cold fluid enters the heat exchanger at 40° C. The mean temperature difference between the two fluids is
[A].

20°C
[B].
40°C
[C].
60°C
[D].
66.7°C

Answer: Option A

Explanation:

No answer description available for this question.

Read More A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100° C and leaves at 60° C. A cold fluid enters the heat exchanger at 40° C. The mean temperature difference between the two fluids 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________________?

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________________?

A. Ammonia
B. Carbon dioxide
C. Freon
D. Brine
E. Hydrocarbon refrigerant

Read More 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________________?

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