Refrigerant Liquid Line Sizing

Size refrigerant liquid line piping based on capacity, length, and pressure drop criteria.

Refrigeration capacity in tons.
tons
Total equivalent length including fittings.
ft
Vertical rise from condenser to evaporator.
ft
Maximum allowable pressure drop (typical 1-3 psi).
psi

Results

Recommended Pipe Size-in
Liquid Velocity-ft/s
Total Pressure Drop-psi
References: ASHRAE Handbook - Refrigeration, Chapter 4. Liquid line sizing for pressure drop and velocity limits.