Refrigeration第 68 / 110 题
A refrigerant metering device such as a fixed orifice or TXV creates what effect on the refrigerant?
a.Raises its pressure
b.Condenses it to liquid
c.Causes a pressure drop so it can boil at a low temperature in the evaporator
d.Superheats the vapor before the condenser
解析
The metering device restricts flow, dropping the high-pressure liquid to a low pressure so it can boil at a low temperature and absorb heat in the evaporator. This division between high and low sides is central to the cycle. TXVs also modulate this flow to control superheat.
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