Question

What the effect of superheating at the TEV ( thermal expansion valve ) on the heat pump process?

Answer 1

thermal expansion valve(TEV) is a component in heat pump that controls the amount of refrigerant released into the evaporator thereby keeping superheat the difference between the current refrigerant temperature at the evaporator outlet and its saturation temperature at the current evaporating pressure, at a stable value, ensuring that the only phase in which the refrigerant leaves the evaporator is vapor, and, at the same time, supplying the evaporator coils with the optimal amount of liquid refrigerant to achieve the optimal heat exchange rate allowed by that evaporator.