Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Pressure in the evaporator
Degree of superheat at exit from the evaporator
None of these
Temperature of the evaporator

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Refrigeration and Air Conditioning
It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be

Dehumidification
Cooling and humidification
Dehumidification and pure sensible cooling
Cooling and dehumidification

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