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The evaporator changes refrigerant from a low pressure liquid to a low pressure vapor, and acts as a heat exchanger, removing heat and humidity from the passenger compartment.

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Which is not a pressure or force on a txv diaphragm?

Temperature is not a pressure or force acting on a TXV (Thermostatic Expansion Valve) diaphragm. The TXV diaphragm is primarily influenced by refrigerant pressure and spring force to regulate the flow of refrigerant into the evaporator coil. Temperature affects the superheat setting of a TXV but is not a direct force acting on the diaphragm.


Is a dx coil on an ac system another term for tx valve coil?

A dx or direct expansion coil describes a type of heat exchanger. (As compared to chilled water.) The tx valve regulates the refrigerant. Systems without a txv will have a fixed orifice. The txv is generally more efficient than a fixed orifice.


What is the purpose of the external equalizer on a TXV?

The purpose of the External equalizer on the TXV is to compensate for the pressure drop in the evaporator coil , This is done since the superheat calculation is based on the difference in the Saturation temperature corresponding to the Suction pressure (Measured after the coil) and the actual suction line temperature. Now, in a TXV measurement of actual line temperature is accomplished by using the Sensing Bulb and the Measurement of the Suction pressure by the External Equalizer of the TXV. The opening/Closing of the Expansion valve is controlled by the setting of the superheat which is governed by the setting of the Spring.


How many tons is Trane central air conditioner model 2TTB2?

It is 2.5 ton with standard non-TXV evaporator coil.


What is the meaning of starved evaporator coil?

It could be restriction or low charge. Meaning you could have a bad txv valve or not enough refrigerant in the system.


What is the different between exv and txv?

Difference between txv and exv.


Effect of moisture on thermostatic expansion valve?

None, a TXV operates by it's sensing bulb sensing superheat of the suction line as it exits the evaporator coil.


Which is not a pressure or force actingon a TXV diaphragn?

Temperature is not a pressure or force acting on a TXV diaphragm. The pressure and forces that typically act on a TXV diaphragm are the evaporator pressure, spring force, and spring adjustment. Temperature indirectly influences the operation of the TXV by affecting the refrigerant pressure.


Is it ok to undersize a txv?

No, it is not.


What is a dual port TXV?

Dual port TXV used when system need a large TXV for short periods of time. Dual-port valves have two independent capacities larger port for periods of high load smaller port for periods of normal load TXV capacity is doubled when larger port is open all the way.


What is meant by a dual-port txv?

step motor


What is meant by a dual port TXV?

step motor