Thermal expansion valves are being discussed. Technician A says the TEV regulates the refrigerant flow to the evaporator by balancing the inlet flow to the outlet temperature. Technician B says the TEV is closed when the temperature at the outlet of the evaporator is high. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because the Thermal Expansion Valve (TEV) indeed regulates the flow of refrigerant to the evaporator based on the cooling demand, which can be inferred from the temperature at the evaporator outlet. Technician B is incorrect because the TEV opens more to allow more refrigerant to flow when the temperature at the outlet of the evaporator is high, not closed.

Thermal Expansion Valves Are Being Discussed