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03-07-2013, 08:11 PM #1
help-Working Principle of Electronic Expansion Valve
Hi every body ,hope you all will be in sound health and enjoying all in your own way.
I want to know one point regarding working of electronic expansion valve .
A thermistor conveys superheat condition through a circuit to heater with negative temperature resistance coefficient. My question is that how does heater operate needle valve to allow more or less refrigerant to evaporator?
Thanks in advance