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What temperature of the actual refrigerant in the liquid line and evaporator coil?
I have a walk in cooler that is operating at 38F and a ambient of 70F. The operating pressures are 20PSIG suction and a 125PSIG head pressure with 134A. The saturation temperature of 100F and a coil temp of 20F.
What I was look for is the temperature of the refrigerant in the liquid line and in the evap coil? On a normal operating system.
1 Answer
- Born YesterdayLv 79 years agoFavorite Answer
Normally, vapor temperature inside the evaporator is 10F below coil temperature.
If by saturation temperature you mean condensing temperature (at the receiver outlet),
then liquid line temperature will fall as it approaches the evaporator (as it should for subcooling),
to a point approaching evaporator temperature near the expansion device.
Actual suction pressure will depend on super heat setting ( which varies to meet compressor manufacturer's requirements and should be a minimum of 10F at a point 12" from the compressor).
