GB/T 26205-2026Refrigerating and air-conditioning equipment and systems — Specification for reducing the release of halogenated refrigerants (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document supersedes GB/T 26205-2010 "Specifications for Reducing Emissions of Halogenated Refrigerants in Refrigeration and Air Conditioning Equipment and Systems", and is consistent with GB/T 26205- Compared to 2010, aside from structural adjustments and editorial changes, the main technical changes are as follows.

a) Added terms and definitions for halogenated refrigerants and halogenated compounds (see 3.1);

b) Added terms and definitions related to the classification of refrigerant systems and equipment (see 3.5~3.14);

c) Added terms and definitions related to equipment maintenance and refrigerant systems (see 3.22~3.27);

d) The definition of the design pressure term has been changed (see 3.28, 3.14 of the 2010 edition);

e) Added relevant terms and definitions for refrigerant charging and refrigerant circuits (see 3.46~3.48, 3.50);

f) Added terminology and definitions for tracer gases (see 3.51);

g) The design requirements have been changed (see Chapter 4, Chapter 4 of the 2010 edition);

h) Verification methods for each process have been added (see 5.3, 6.7, 7.7, 8.7, 9.4, and 10.3);

i) The requirement for system cleaning has been removed (see 5.4 in the 2010 version);

j) The requirement for vibration testing has been removed (see 5.5 in the 2010 edition);

k) The leakage rate specification has been changed (see 6.2.1, 6.4.1 in the 2010 version);

l) The requirements for vacuuming have been changed (see 6.4, 6.2 in the 2010 version);

m) Added relevant requirements for welding venting (see 6.6);

n) Added installation precautions (see 7.1.2.6, 7.1.2.7);

o) The requirement for field pressure testing has been removed (see 7.2 in the 2010 version);

p) The requirements for the refrigerant charge log during installation have been changed (see 7.5, 7.6 in the 2010 version);

q) Additional requirements for water-cooled units have been added (see 7.6);

s) Added requirements for recording refrigerant monitoring alarms (see 8.4);

t) Added requirements for equipment retirement (see 8.6);

u) The requirements for refrigerant recovery equipment have been changed (see 9.1, 2010 version 9.1);

v) The requirements for the storage of refrigerants in safety categories A2L, A2, and A3 have been changed (see 9.2.4, 2010 edition). 9.2.3).

1 Scope

This document specifies the design, product development, manufacturing, installation, maintenance, and operation of fixed-installation refrigeration, air conditioning, and heat pump equipment and systems.

Maintenance and decommissioning, refrigerant recovery, reuse and disposal, methods to reduce halogenated refrigerant emissions during refrigerant handling and storage. The requirements and corresponding verification methods are described.

This document applies to the emissions of halogenated hydrocarbons and halogenated ether refrigerants.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 4706.92 Safety of household and similar electrical appliances - Part 92: Recycling and/or remanufacturing of products from air conditioning and refrigeration equipment Special requirements for refrigerant equipment

GB/T 9237 Safety and Environmental Requirements for Refrigeration Systems and Heat Pumps

GB 15603 General Rules for Storage of Hazardous Chemicals in Warehouses

GB 17914 Technical Conditions for Storage and Maintenance of Flammable and Explosive Goods

GB/T 18517 Refrigeration Terminology

3 Terms and Definitions

3.3 Halogenated compounds containing chlorine, fluorine, carbon, and hydrogen atoms