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ASHRAE - 41.9

Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters

active
Organization: ASHRAE
Publication Date: 31 March 2021
Status: active
Page Count: 42
scope:

This standard applies to measuring mass flow rates for refrigerants and refrigerant/lubricant mixtures using calorimeters in laboratories.

This standard applies where the entire flow stream of the refrigerant or the refrigerant/lubricant mixture enters the calorimeter as a subcooled liquid and leaves as a superheated vapor (evaporator type).

This standard applies where the entire flow stream of the refrigerant or the refrigerant/lubricant mixture enters the calorimeter as a superheated vapor and leaves as a subcooled liquid (condenser type).

PURPOSE

This standard prescribes methods for measuring mass flow rates for refrigerants and refrigerant/ lubricant mixtures using calorimeters.

Document History

41.9 ADD A
July 31, 2023
Standard Methods for Refrigerant Mass Flow Measurement Using Calorimeters
FOREWORD Addendum a makes it easier for the higher-tier ASHRAE standards to adopt this standard by reference, updates the uncertainty requirements, and updates the steady-state criteria sections....
41.9
March 31, 2021
Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters
This standard applies to measuring mass flow rates for refrigerants and refrigerant/lubricant mixtures using calorimeters in laboratories. This standard applies where the entire flow stream of the...
ASHRAE STD 41.9
August 30, 2018
Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters
This standard applies to measuring mass flow rates for refrigerants and refrigerant/lubricant mixtures using calorimeters in laboratories. This standard applies where the entire flow stream of the...
ASHRAE STD 41.9
April 18, 2017
Standard Methods for Volatile-Refrigerant Mass Flow Measurements Using Calorimeters
A description is not available for this item.
ASHRAE STD 41.9
January 29, 2011
Standard Methods for Volatile-Refrigerant Mass Flow Measurements Using Calorimeters
This standard applies to the measurement of the flow of a volatile refrigerant in the following cases: a. where the entire flow stream of the volatile refrigerant enters the calorimeter as a...
ASHRAE STD 41.9
June 29, 2000
Calorimeter Test Methods for Mass Flow Measurements of Volatile Refrigerants
A description is not available for this item.
ASHRAE STD 41.9
January 1, 2000
Calorimeter Test Methods for Mass Flow Measurements of Volatile Refrigerants
A description is not available for this item.
41.9
January 1, 1988
Standard Calorimeter Test Method for Flow Measurement of a Volatile Refrigerant
A description is not available for this item.
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References

This document references:
ASHRAE STD 15 & 34 - Safety Standard for Refrigeration Systems
Published by ASHRAE on August 20, 2019
A description is not available for this item.
This document references:
ASHRAE STD 41.1 - Standard Methods for Temperature Measurement
Published by ASHRAE on January 1, 2020
This standard applies to temperature measurements under laboratory and field conditions for use in testing heating, ventilating, air-conditioning, and refrigeration systems and components.
This document references:
ASHRAE STD 41.11 - Standard Methods for Power Measurement
Published by ASHRAE on January 1, 2020
This standard applies to power measurements under laboratory and field conditions when testing heating, ventilating, air-conditioning, and refrigerating systems and components. PURPOSE This standard...
This document references:
ASHRAE STD 41.3 - Standard Methods for Pressure Measurement
Published by ASHRAE on June 28, 2014
The pressure measurement methods described herein are intended for use in testing heating, refrigerating, and air-conditioning equipment and components. PURPOSE The purpose of this standard is to...
This document references:
ASHRAE STD 41.4 - Standard Method for Measuring the Proportion of Lubricant in Liquid Refrigerant
Published by ASHRAE on April 30, 2015
This standard uses the gravimetric method as the primary method, but alternative methods can be used if those methods are calibrated against the primary method. This standard does not apply to...
This document is referenced by:
FUNDAMENTALS IP CH 38 - MEASUREMENT AND INSTRUMENTS
Published by ASHRAE on January 1, 2021
A description is not available for this item.
This document is referenced by:
23 - Methods for Performance Testing Positive Displacement Refrigerant Compressors and Compressor Units
Published by ASHRAE on January 21, 2022
This standard applies to methods for performance testing single-stage and multistage positive displacement refrigerant compressors and compressor units. This standard applies to compressors and...
This document is referenced by:
900 I-P - Performance Rating of Thermal Storage Equipment Used for Cooling
Published by AHRI on January 1, 2014
This standard applies to Thermal Storage Equipment used for cooling which may be charged and discharged with any of a variety of heat transfer fluids. The equipment, as further described in Sections...
This document is referenced by:
901 SI - Performance Rating of Thermal Storage Equipment Used for Cooling
Published by AHRI on January 1, 2014
This standard applies to Thermal Storage Equipment used for cooling which may be charged and discharged with any of a variety of heat transfer fluids. The equipment, as further described in Sections...
This document is referenced by:
500-L - Laboratory Methods of Testing Louvers for Rating
Published by AMCA on January 1, 2023
This standard may be used as a basis for testing louvers with air as the test gas. Tests conducted in accordance with the requirements of this standard are intended to demonstrate the performance of...
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