2023/07/28
Refrigerant pump liquid pipe boosting system
This technical method uses a small liquid pump to pressurize the liquid refrigerant entering the liquid pipe, as shown in Figure 26.26 (B). For ease of comparison, the system diagram of the conventional system is also listed in Figure 26.26 (A). For systems without liquid storage, the increased pressure value is equal to the pressure loss between the condenser outlet and the inlet of the thermal expansion valve; For thermal expansion valves and systems with a reservoir, it is equal to the pressure loss between the reservoir and the inlet of the thermal expansion valve. Boosting the pressure of liquid refrigerant can increase the saturation temperature when it is inconvenient to maintain the actual temperature of the liquid refrigerant. In this way, even if the liquid refrigerant is in the liquid pipe and there is a pressure drop during the flow into the metering device, it can only gradually become undercooled and cannot flash. The specifications of the refrigerant pump can be determined based on the relevant parameters of the system.
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2023/07/28
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