Refrigeration and Air Conditioning The C.O.P. of a heat pump working on a reversed Carnot cycle is (T₁ - T₂)/T₁ T₁/(T₂ - T₁) T₂/(T₂ - T₁) (T₂ - T₁)/T₁ (T₁ - T₂)/T₁ T₁/(T₂ - T₁) T₂/(T₂ - T₁) (T₂ - T₁)/T₁ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression refrigeration system, refrigerant occurs as liquid between Condenser and expansion valve Compressor and condenser Expansion valve and evaporator Compressor and evaporator Condenser and expansion valve Compressor and condenser Expansion valve and evaporator Compressor and evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate following h.p. per ton of refrigeration 0.5 to 0.8 h.p. per ton of refrigeration 1 to 2 h.p. per ton of refrigeration 0.1 to 0.5 h.p. per ton of refrigeration 2 to 5 h.p. per ton of refrigeration 0.5 to 0.8 h.p. per ton of refrigeration 1 to 2 h.p. per ton of refrigeration 0.1 to 0.5 h.p. per ton of refrigeration 2 to 5 h.p. per ton of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Pick up the wrong statement. A refrigerant should have Higher critical temperature High boiling point Tow specific heat of liquid High latent heat of vaporisation Higher critical temperature High boiling point Tow specific heat of liquid High latent heat of vaporisation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with oxygen and cause its depletion These react with ozone layer These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with oxygen and cause its depletion These react with ozone layer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant increases depends on other factors remains same decreases increases depends on other factors remains same decreases ANSWER DOWNLOAD EXAMIANS APP
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