A thermostatic expansion valve (TXV) primarily controls which parameter at the evaporator outlet in steady service?
Choices
- (A) Condenser LWT to tower
- (B) Compressor oil viscosity at crankcase
- (C) Superheat of vapor leaving evaporator, within stable limits
- (D) Duct static setpoint in Pa
Correct answer: (C)
Superheat of vapor leaving evaporator, within stable limits
Explanation
TXV/TEV: holds reasonable superheat; EEV similar with electronic control.