Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Lowers compressor capacity because vapour is lighter
Lowers evaporation temperature
Increases power required per ton of refrigeration
All of these

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Refrigeration and Air Conditioning
The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

(td₃ - td₁)/(td₃ - td₂)
(td₃ - td₂)/(td₃ - td₁)
(td₂ - td₃)/(td₃ - td₁)
(td₃ - td₁)/(td₂ - td₃)

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