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TXV vs. EEV - Short #278
In this short podcast episode, Bryan breaks down the differences between a thermostatic expansion valve (TXV) and an electronic expansion valve (EEV). He highlights their strengths and weaknesses.
In the basic refrigerant circuit, the metering device drops the pressure. TXVs and EEVs are both metering devices that cause the liquid refrigerant to drop in pressure and become a liquid-vapor mixture; they control evaporator feeding and maintain a constant superheat.
TXVs achieve this by mechanical means; the bulb responds to suction line temperature and evaporator pressure at the valve. They are…
The skinny
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