Question

5. The operation of a TXV is controlled by the

A. temperature bulb.
B. external pressure of the evaporator.
C. modulating valve.
O D. thermostatic spring.

Answer 1

The operation of a TXV (Thermostatic Expansion Valve) is controlled by the temperature bulb which senses the temperature of the refrigerant at the outlet of the evaporator coil.

Step-by-step explanation:

The operation of a TXV (Thermostatic Expansion Valve) is controlled by the temperature bulb. The temperature bulb senses the temperature of the refrigerant at the outlet of the evaporator coil. When the temperature of the refrigerant rises above the desired set point, the bulb expands, causing the valve to open and allowing more refrigerant flow. Conversely, when the temperature drops below the set point, the bulb contracts, closing the valve and reducing refrigerant flow.

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