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GB/T 37994-2019General rules for sampling blend (English PDF)

混合制冷剂采样通则

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 30, 2019

Implementation date

July 1, 2020

Scope

GB/T 37994-2019 is the English-translated version of 混合制冷剂采样通则.

GB/T 37994-2019 is the Chinese standard "General rules for sampling blend". Its scope clause reads: This standard specifies the sampling principle, sampling equipment, sampling preparation, sampling steps, and sampling safety of mixed refrigerant sampling.

This standard applies to the sampling of mixed refrigerants. Its clauses include terms and definitions.

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Document preview — GB/T 37994-2019

National Standard of the People's Republic of China

ICS: 71.080.20
Classification: G 15

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
3.1 Refrigerant
3.2 Mixed refrigerant blend
3.3 Azeotrope mixed refrigerant azeotrope

1 Scope

This standard specifies the sampling principle, sampling equipment, sampling preparation, sampling steps, and sampling safety of mixed refrigerant sampling.

This standard applies to the sampling of mixed refrigerants.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 3723 General rules for sampling safety of industrial chemical products

GB/T 6680-2003 General rules for sampling of liquid chemical products

GB/T 6681-2003 General rules for sampling of gas chemical products

GB/T 7778-2017 refrigerant numbering method and safety classification

GB/T 14193 liquefied gas cylinder filling regulations

TSGR0006 gas cylinder safety technical supervision procedures

3 Terms and definitions

The following terms and definitions defined in GB/T 6680-2013 and GB/T 7778-2017 apply to this document. In order to facilitate

Some of the terms and definitions in GB/T 6680-2013 and GB/T 7778-2017 are repeated below.

3.1 Refrigerant

A fluid used for heat transfer in a refrigeration system that absorbs heat at low and low pressures of the fluid and releases heat at high temperatures and pressures of the fluid.

Amount, usually involving the phase change of a fluid.

[GB/T 7778-2017, definition 3.1.35]

3.2 Mixed refrigerant blend

A mixed refrigerant composed of two or more refrigerants.

[GB/T 7778-2017, definition 3.1.6]

3.3 Azeotrope mixed refrigerant azeotrope

Consisting of two or more refrigerants, the equilibrium vapor phase and liquid phase composition are the same at a given pressure, but under other conditions

May be different mixed refrigerants.

[GB/T 7778-2017, definition 3.1.5] […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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GB/T 37999-2019|GB/T 38100-2019|GB/T 34237-2017|GB/T 33063-2016|GB/T 33064-2016|GB/T 33065-2016

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