Compressor Oil Return Calculator

Verify adequate refrigerant velocity for oil return to compressor.

Inside diameter of suction line.
inches
Refrigeration capacity at operating condition.
tons
Evaporating temperature.
°F
Height of vertical suction line.
ft

Results

Refrigerant Velocity-FPM
Minimum Required Velocity-FPM
Oil Return Status-
References: ASHRAE Handbook - Refrigeration, Chapter 1 (Refrigerant Piping)