Ammonia-absorption refrigeration cycle requires__________________?

Byadmin January 25, 2019August 16, 2021

Ammonia-absorption refrigeration cycle requires__________________?

A. very little work input
B. maximum work input
C. nearly same work input as for vapour compression cycle
D. zero work input
E. none of the above

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
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.

Question: A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
[A].

higher
[B].
lower

Answer: Option B

Explanation:

No answer description available for this question.

Read More A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.

Question: The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.
[A].

increases
[B].
decreases

Answer: Option A

Explanation:

No answer description available for this question.

Read More The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During heating and humidification, the final relative humidity of air

Question: During heating and humidification, the final relative humidity of air
[A].

is higher than that of the entering air
[B].
is lower than that of the entering air
[C].
can be lower or higher than that of the entering air
[D].
none of the above

Answer: Option C

Explanation:

No answer description available for this question.

Read More During heating and humidification, the final relative humidity of air
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.

Question: Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More Dew point temperature is the temperature of air recorded by a thermometer, when the moisture present in it begins to condense.

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