Refrigerant Line Velocity Calculator

Calculate refrigerant velocity in suction and liquid lines to ensure proper oil return.

Refrigeration capacity of the system.
tons
Inside diameter of refrigerant line.
inches
Enter 1 for suction line, 2 for liquid line.
type

Results

Refrigerant Velocity-ft/s
Minimum Required Velocity-ft/s
Oil Return Status-
References: ASHRAE Handbook - Refrigeration, Chapter 1 (Halocarbon Refrigeration Systems)