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About This Item

 

Full Description

Standard 41.9 prescribes methods for measuring mass flow rates for refrigerants and refrigerant/lubricant mixtures using calorimeters. The 2021 edition is a comprehensive update that includes changes to steady-state criteria and the lubricant circulation rate measurement methods.
 

Document History

  1. ASHRAE 41.9-2021

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    Standard 41.9-2021 -- Standard Methods for Refrigerant Mass Flow Measurements Using Caloriemeters (ANSI Approved)

    • Most Recent
  2. ASHRAE 41.9-2018


    Standard 41.9-2018 -- Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters (ANSI Approved)

    • Historical Version
  3. ASHRAE 41.9-2011


    Standard 41.9-2011 -- Standard Methods for Volatile-Refrigerant Mass Flow Measurements Using Calorimeters (ANSI approved)

    • Historical Version
  4. ASHRAE 41.9-2000 (RA 2006)


    Standard 41.9-2000 (RA 2006) -- Calorimeter Test Methods for Mass Flow Measurements of Volatile Refrigerants (ANSI approved)

    • Historical Version
  5. ASHRAE 41.9-2000


    Standard 41.9-2000 -- Calorimeter Test Methods for Mass Flow Measurements of Volatile Refrigerants (ANSI Approved)

    • Historical Version
  6. ASHRAE 41.9-1988


    A Standard Calorimeter Test Method for Flow Measurement of a Volatile Refrigerant

    • Historical Version