What is the sub-cool formula?

The sub-cool formula is used to calculate the amount of liquid refrigerant that is cooled below its saturation temperature in a refrigeration or air conditioning system. It is expressed as: Subcooling = Liquid Line Temperature - Saturation Temperature at the corresponding pressure. This measurement helps assess the efficiency of the system and ensures that the refrigerant is fully condensed before entering the expansion device, which can improve system performance and reliability.