ASHRAE STD 28
1996 Edition, June 21, 1996
Methods of Testing Flow Capacity of Refrigerant Capillary Tubes
Includes all amendments and changes through Reaffirmation Notice , January 23, 2010
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Description / Abstract:
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.