ANSI/ASHRAE 28-1996 (RA 2010)
This standard prescribes two test methods, a traditional method and an alternative method, for determining the flow capacity of capillary tubes such as are used for refrigerant metering in refrigeration systems. Both methods use dry nitrogen and provide comparable results, but the alternative method is more convenient if electronic devices are used. The results obtained by the prescribed procedures are indicative of the refrigerant flow characteristics of the tube but are not intended to represent the actual refrigerant flow characteristics in a refrigerating cycle.Table of ContentsUnits: Dual