High Side Float Expansion Valve

Electronic expansion valve working principle hvac basics duration.

High side float expansion valve.

As shown in the figure a high side float valve maintains the liquid level constant in a float chamber that is connected to the condenser on the high pressure side. Also used as an expansion device for flooded systems the high pressure float valve is located on the high pressure side of the system and is in open connection to the condenser. Figure below shows the schematic of a high side float valve. The high side float is located at the high pressure side of the system and maintain a constant level of refrigerant in the condenser.

It maintains a constant level of liquid refrigerant in the condenser or a little below on stream from it as shown here. Therefore the electrical power consumption of the compressor is reduced as well. As lowside float valve highside float valve controls the flow of refrigerant evaporator on the basis of the level of liquid. Refrigerant from the condenser flows into the valve and immediately opens it allowing refrigerant to expand and pass into the evaporator.

Automatic expansion valves are similar in operation concept to. The flooded operation with highside float valves can take advantage of lower ambient temperatures during the colder seasons with lower condensation temperatures independent of the control system. Refrigerant charge is critical. In low side float valve the valve opens as the level of the refrigerant drops in the evaporator but in high side float valve the valve opens when the level of the refrigerant increases in the chamber.

To increase evaporator pressure the adjustment on the top of the automatic expansion valve should be turned. Float valves shut off the flow of water in an open tank or evaporative cooler at a pre determined level. It controls the evaporator level indirectly by maintaining a constant level of refrigerant inside the float chamber. When the compressor operates the condensed refrigerant flows to the float chamber and opens the valve.

6 24 the valve float is in a liquid receiver or in an auxiliary container on the high pressure side of the system. While in the low side float valve the float chamber is placed in the evaporator on low pressure side in the high pressure side float valve and the float chamber is placed on the high pressure side between the condenser and the evaporator. This causes the refrigerant to flow into the evaporator where it is stored. The continuous expansion of the highside float valve eliminates pressure fluctuations and flash gas is reduced.

High to low item angle float valve 22 angle float valve with threaded outlet 19 float valve 76 float valve kit 2 float valve with threaded outlet 13. When the load increases more amount of refrigerant evaporates and condenses. In a high side float expansion valve fig.

High side float valve.