CPC F25B 49/02 (2013.01) [G01N 9/26 (2013.01); F25B 2700/191 (2013.01)] | 18 Claims |
1. A method for operating a refrigeration cycle, the method comprising:
flowing a refrigerant through a metering device, wherein the metering device is an expansion valve having an inlet and an outlet;
calculating a pressure differential of the refrigerant across the metering device by measuring an inlet pressure of the refrigerant at the inlet and measuring an outlet pressure of the refrigerant at the outlet;
determining that the refrigerant is not a saturated liquid based on the pressure differential by estimating a density correction factor; and
in response to determining that the refrigerant is not a saturated liquid, cooling the refrigerant upstream of the metering device.
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