Refrigeration and Air Conditioning The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity) 20°C DBT and 80% RH 25°C DBT and 40% RH 25°C DBT and 100% RH 22°C DBT and 60% RH 20°C DBT and 80% RH 25°C DBT and 40% RH 25°C DBT and 100% RH 22°C DBT and 60% RH ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process) (hA - h1)/ (h2 - h1) (h2 - hA)/ (h1 - h2) (hA - h2)/ (h1 - h2) (h1 - h2)/ (hA - h2) (hA - h1)/ (h2 - h1) (h2 - hA)/ (h1 - h2) (hA - h2)/ (h1 - h2) (h1 - h2)/ (hA - h2) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evolution of heat of solution takes place in ammonia absorption plant when Weak solution mixes with strong solution Lithium bromide mixes with ammonia Ammonia vapour goes into solution Ammonia vapour is driven out of solution Weak solution mixes with strong solution Lithium bromide mixes with ammonia Ammonia vapour goes into solution Ammonia vapour is driven out of solution ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant used in small tonnage commercial machines (hermetically sealed units) is Sulphur dioxide R-12 Carbon dioxide Ammonia Sulphur dioxide R-12 Carbon dioxide Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The COP of a domestic refrigerator Is equal to 1 Is more than 1 Depends upon the make Is less than 1 Is equal to 1 Is more than 1 Depends upon the make Is less than 1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The mass of water vapour present in __________ is called absolute humidity. 1 m3 of dry air 1 kg of dry air 1 kg of wet air 1 m3 of water 1 m3 of dry air 1 kg of dry air 1 kg of wet air 1 m3 of water ANSWER DOWNLOAD EXAMIANS APP
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