ANSI ASHRAE Standard 34-2024 制冷剂的名称和安全分类

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ANSI/ASHRAE Standard 34-2024

(Supersedes ANSI/ASHRAE Standard 34-2022)

Includes ANSI/ASHRAE addenda listed in Appendix K

Designation and

Safety Classification

of Refrigerants

See Informative Appendix K for approval dates by ASHRAE and the American National Standards Institute.

This Standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which the Standards

Committee has established a documented program for regular publication of addenda or revisions, including procedures for

timely, documented, consensus action on requests for change to any part of the Standard. Instructions for how to submit a

change can be found on the ASHRAE® website (www.ashrae.org/continuous-maintenance).

The latest edition of an ASHRAE Standard may be purchased from the ASHRAE website (www.ashrae.org) or from

ASHRAE Customer Service, 180 Technology Parkway, Peachtree Corners, GA 30092. E-mail: orders@ashrae.org. Fax:

678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For

reprint permission, go to www.ashrae.org/permissions.

PDF includes hyperlinks for convenient navigation. Click on a reference to a section,

table, figure, or equation to jump to its location. Return to the previous page via the

bookmark menu.

print or digital form is not permitted without ASHRAE's prior written permission.

SPECIAL NOTE

This American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is defined

by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as

“substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority,

but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.”

Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation.

ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.

ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project

Committee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, all

must be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees.

The Senior Manager of Standards of ASHRAE should be contacted for

a. interpretation of the contents of this Standard,

b. participation in the next review of the Standard,

c. offering constructive criticism for improving the Standard, or

d. permission to reprint portions of the Standard.

DISCLAIMER

ASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and accepted

industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems

tested, installed, or operated in accordance with ASHRAE’s Standards or Guidelines or that any tests conducted under its Standards or Guidelines

will be nonhazardous or free from risk.

ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS

ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by

suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information

that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance

to them is completely voluntary.

In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied,

that the product has been approved by ASHRAE.

ASHRAE Standing Standard Project Committee 34

Cognizant TC: 3.1, Refrigerants and Secondary Coolants

SPLS Liaison: Kathleen Owen

ASHRAE Staff Liaisons: Kai Nguyen and Ryan Shanley

Sarah Kim, Chair (2022–24) Gary W. Jepson Bob Low John P. Scott

Julie Majurin, Chair (2024–)

Vice Chair (2022–24) Sara K. Kampfe Sandeep Mukhi Christopher J. Seeton

John Senediak, Vice Chair (2024–) James Kendzel WenBin Ng Ankit Sethi

Paul H. Dugard Mary E. Koban Mark M. Olson Valeria Shultz

Felix Flohr Tatsuro Kobayashi Michael Petersen Kenji Takizawa

Brian A. Fricke Stephen Kujak Chun-cheng Piao Douglas Tucker

Christine Glatt Andrew Kusmierz Gurunarayana Ravi Bennett J. Varsho

Sivakumar Gopalnarayanan Evan Laganis Arif Rokoni Asbjørn L. Vonsild

Danny M. Halel Thomas J. Leck George M. Rusch William F. Walter

Joshua Hughes Morgan E. Leehey Ivan Rydkin Greg Woyczynski

Harshad V. Inamdar Valerie Lisi Marc Scancarello Samuel F. Yana-Motta

ASHRAE STANDARDS COMMITTEE 2024–2025

Douglas D. Fick, Chair Jaap Hogeling Kenneth A. Monroe Paolo M. Tronville

Adrienne G. Thomle, Vice Chair Jennifer A. Isenbeck Daniel H. Nall Douglas K. Tucker

Hoy R. Bohanon, Jr. Satish N. Iyengar Philip J. Naughton William F. Walter

Kelley P. Cramm Phillip A. Johnson Kathleen Owen David P. Yuill

Abdel K. Darwich Paul A. Lindahl, Jr. Gwelen Paliaga Susanna S. Hanson, BOD ExO

Drake H. Erbe Julie Majurin Karl L. Peterman Wade H. Conlan, CO

Patricia Graef Lawrence C. Markel Justin M. Prosser

William M. Healy Margaret M. Mathison Christopher J. Seeton

Ryan Shanley, Senior Manager of Standards

print or digital form is not permitted without ASHRAE's prior written permission.

CONTENTS

ANSI/ASHRAE Standard 34-2024

Designation and Safety Classification of Refrigerants

SECTION PAGE

Foreword ..................................................................................................................................................................... 2

1 Purpose.............................................................................................................................................................2

2 Scope ................................................................................................................................................................ 2

3 Definitions ......................................................................................................................................................... 2

4 Numbering of Refrigerants ................................................................................................................................7

5 Designation .....................................................................................................................................................32

6 Safety Group Classifications ...........................................................................................................................33

7 Refrigerant Concentration Limit ...................................................................................................................... 37

8 Refrigerant Classifications ..............................................................................................................................39

9 Application Instructions ................................................................................................................................... 39

10 Normative References..................................................................................................................................... 43

Informative Appendix A: Isomer Designation Examples .......................................................................................45

Normative Appendix B: Details of Testing—Flammability ..................................................................................... 47

Informative Appendix C: Informative References and Bibliography ...................................................................... 52

Informative Appendix D: Refrigerant Data.............................................................................................................53

Informative Appendix E: Toxicity and Flammability Data for Single-Compound Refrigerants...............................66

Informative Appendix F: Example Calculations for Heats of Combustion .............................................................71

Informative Appendix G: Calculation of RCL and ATEL for Blends.......................................................................73

Informative Appendix H: Examples of Composition Uniqueness ..........................................................................75

Informative Appendix I: Recommended Significant Figures Reporting of Quantities

in Applications to ASHRAE SSPC 34 ................................................................................................ 79

Informative Appendix J: Examples of Minimum Composition Tolerance ..............................................................80

Informative Appendix K: Addenda Description...................................................................................................... 81

NOTE

Approved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAE

website at www.ashrae.org/technology.

ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

ANSI is a registered trademark of the American National Standards Institute.

print or digital form is not permitted without ASHRAE's prior written permission.

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摘要：

本指南详细介绍《ANSI ASHRAE Standard 34-2024 制冷剂的名称和安全分类》标准，该标准由美国国家标准学会与美国采暖、制冷与空调工程师学会联合发布，是制冷剂命名与安全分类领域的最新权威规范。文档系统规定了制冷剂的编号命名体系，涵盖氢氟烃、氢氟烯烃、天然制冷剂及混合制冷剂等类型，并依据毒性、可燃性及其组合特性将制冷剂划分为A1、A2L、B1等安全类别。本次2024年更新新增了对低全球变暖潜能值制冷剂及高可燃性物质的分类细则，同时修订了可燃性测试阈值与标识要求，旨在为设备设计、

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ANSI ASHRAE Standard 34-2024 制冷剂的名称和安全分类

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