Moisture in freon refrigeration system causes________________?

Byadmin January 25, 2019August 16, 2021

Moisture in freon refrigeration system causes________________?

A. ineffective refrigeration
B. high power consumption
C. freezing automatic regulating valve
D. corrosion of whole system
E. breakdown of refrigerant

Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Which of the following refrigerant has the lowest boiling point?

Question: Which of the following refrigerant has the lowest boiling point?
[A].

Ammonia
[B].
Carbon dioxide
[C].
Sulphur dioxide
[D].
R-12

Answer: Option B

Explanation:

No answer description available for this question.

Read More Which of the following refrigerant has the lowest boiling point?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

An ordinary passenger aircraft requires a cooling system of capacity.

Question: An ordinary passenger aircraft requires a cooling system of capacity.
[A].

2 TR
[B].
4 TR
[C].
8 TR
[D].
10 TR

Answer: Option C

Explanation:

No answer description available for this question.

Read More An ordinary passenger aircraft requires a cooling system of capacity.
Refrigeration and Air Conditioning

Highest temperature encountered in refrigeration cycle should be________________?

Highest temperature encountered in refrigeration cycle should be________________?

A. near critical temperature of refrigerant
B. above critical temperature
C. at critica. temperature
D. much below critical temperature
E. could be anywhere

Read More Highest temperature encountered in refrigeration cycle should be________________?
Refrigeration and Air Conditioning

Refrigeration in aeroplanes usually employs the following refrigerant___________________?

Refrigeration in aeroplanes usually employs the following refrigerant___________________?

A. Co2
B. Freon-11
C. Freon-22
D. Air
E. none of the above

Read More Refrigeration in aeroplanes usually employs the following refrigerant___________________?
Refrigeration and Air Conditioning

Which of the following is not a desirable property of a refrigerant_________________?

Which of the following is not a desirable property of a refrigerant_________________?

A. high triiscibility with oil
B. low boiling point
C. good electrical conductor
D. large latent heat
E. non-inflammable

Read More Which of the following is not a desirable property of a refrigerant_________________?
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

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