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ANSI/ASHRAE 41.10-2024
Standard Methods for Refrigerant Volumetric or Mass Flow Measurement Using Flowmeters
Prescribes methods for refrigerant volumetric or mass flow rate measurement using flowmeters in laboratory and field applications. Each refrigerant mass flow rate is determined by subtracting the measured lubricant mass flow rate from the measured refrigerant/lubricant mixture mass flow rate. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]