Refrigeration And Air Conditioning - Study Mode

[#76] In which of the following refrigeration system, waste heat can be effectively used?
Correct Answer

(B) Vapour absorption cycle

Explanation

Solution: It is generally recognized that considerable energy savings could result from installing a waste heat recovery system in the exhaust of a Gas Turbine power plant

[#77] Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since
Correct Answer

(D) These react with ozone layer

Explanation

Solution: Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with ozone layer

[#78] The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)
Correct Answer

(C) 22°C DBT and 60% RH

Explanation

Solution: The comfort conditions in air conditioning are at 22°C DBT and 60% RH

[#79] In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by
Correct Answer

(D) Absorber, generator and liquid pump

Explanation

Solution: In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by Absorber, generator and liquid pump

[#80] Which of the following statement is correct?
Correct Answer

(D) All of the above
(H) Both (A) and (B)
(L) All of the above

Explanation

Solution: - The constant enthalpy lines are also constant wet bulb temperature lines - The wet bulb and dry bulb temperature are equal at saturation condition - The wet bulb temperature is a measure of enthalpy of moist air