How to Calculate Superheat and Subcooling for HVAC and Refrigeration Systems...
Superheat is the measured value of the difference between the temperature of vapor and the temperature of that refrigerant at the same pressure. Another way to is the temperature of vapor above it's boiling temperature at given pressure...
Ensuring proper superheat HVAC and refrigeration systems is very important. Correct superheat ensures that the compressor is not being flooded. Flooding occurs when liquid refrigerant makes its way back to the compressor. This can cause lubrication issues and could damage the compressor...
Connect your gauge manifold the system and record your low side pressure..
Connect your pipe thermistor to the suction line as close to the condenser as possible and at least 6 inches from the compressor..
Subcooling is the measured value of the amount the liquid is cooled before exiting the condenser. .
Connect your gauge manifold the system and record your high side pressure..
Connect your pipe thermistor to the liquid line as close to the evaporator as possible and before the metering device..
Consult manufacturer for desired subcooling.. High Subcooling = Flooded Condenser Low Subcooling = Starved condenser.
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