Refrigerant Suction Line Sizing

Size refrigerant suction line for proper velocity, pressure drop, and oil return.

Refrigeration capacity in tons.
tons
Total equivalent length including fittings.
ft
Vertical rise from evaporator to compressor.
ft
Saturated suction temperature.
°F

Results

Recommended Pipe Size-in
Suction Gas Velocity-ft/s
Min Velocity for Oil Return-ft/s
References: ASHRAE Handbook - Refrigeration, Chapter 4. Suction line sizing for oil return and pressure drop optimization.