Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

Power per TR is low
Mass of refrigerant circulated in the system is low
Mass of the refrigeration equipment is low
System has high C.O.P.

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Refrigeration and Air Conditioning
In a saturated air-water vapour mixture, the

Dry bulb temperature is higher than dew point temperature
Dry bulb temperature is higher than wet bulb temperature
Dew point temperature is lower than wet bulb temperature
Dry bulb, wet bulb and dew point temperature are same

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

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