Sub Cooling
Sub Cooling is the very opposite of Superheat.
It is a temperature of liquid below the boiling (condensing) temperature, at a specified pressure
When a vapour is compressed or cools and turns back into a liquid, subcooling is the number of degrees the substance has cooled below its boiling point.
When a vapour turns into a liquid at a temperature of 40 degrees °C (condensing temperature) and the resulting liquid cools further this is termed as Sub cooling. If the liquid cooled down to 30 degrees °C, it has sub cooled by 10 degrees °C.
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