GB/T 40045-2021 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 40045-2021 | English | 185 |
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Fuel specification for hydrogen powered vehicles - Liquid hydrogen(LH2)
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GB/T 40045-2021: Fuel specification for hydrogen powered vehicles - Liquid hydrogen(LH2)---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT40045-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.160.20
F 19
Fuel specification for hydrogen powered vehicles -
Liquid hydrogen (LH2)
ISSUED ON: APRIL 30, 2021
IMPLEMENTED ON: NOVEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements ... 5
5 Test methods ... 6
6 Packaging, marks, storage and transportation ... 9
Annex A (informative) Schematic diagram of the gas path of gas chromatograph
... 10
Annex B (normative) Temperature-parahydrogen content curve ... 11
Fuel specification for hydrogen powered vehicles -
Liquid hydrogen (LH2)
1 Scope
This Standard specifies technical indicators, test methods and requirements for
packaging, marks, storage and transportation for fuel specification for hydrogen
powered vehicles - liquid hydrogen (hereinafter referred to as liquid hydrogen).
This Standard is applicable to liquid hydrogen - the fuel, used for proton
exchange membrane fuel cell vehicles stored in storage tanks, pipelines or tank
trucks.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 3634.2, Hydrogen - Part 2: Pure hydrogen, high pure hydrogen and
ultrapure hydrogen
GB/T 3723, Sampling of chemical products for industrial use - Safety in
sampling
GB/T 5832.2, Gas analysis - Determination of moisture - Part 2: Dew point
method
GB/T 6285, Determination of trace oxygen in gases - Electrochemical
method
GB/T 6681, General rules for sampling gaseous chemical products
GB/T 8984, Determination of carbon monoxide carbon dioxide and
hydrocarbon in gases - Gas chromatographic method
GB/T 24499, Technology glossary for gaseous hydrogen, hydrogen energy
and hydrogen energy system
GB/T 27894.3, Natural gas - Determination of composition with defined
uncertainty by gas chromatography - Part 3: Determination of hydrogen,
φ6 - Carbon dioxide content, in micromoles per mole (μmol/mol);
φ7 - Carbon oxide content, in micromoles per mole (μmol/mol);
φ8 - Total sulfur content, in micromoles per mole (μmol/mol);
φ9 - Formaldehyde content, in micromoles per mole (μmol/mol);
φ10 - Formic acid content, in micromoles per mole (μmol/mol);
φ11 - Ammonia content, in micromoles per mole (μmol/mol);
φ12 - Total halide content, in micromoles per mole (μmol/mol).
5.3 Determination of parahydrogen content
5.3.1 Methods and instruments
Use the parahydrogen conversion and measurement device to obtain the
equilibrium hydrogen under the temperature zone of liquid nitrogen as the
standard sample. Use thermal conductivity gas chromatography to determine
parahydrogen content. The detection limit of thermal conductivity gas
chromatograph for parahydrogen shall be less than 30×10-2 (volume fraction).
The installation and commissioning of the instrument are carried out according
to the instrument manual. Refer to Annex A for the gas flow process of the gas
chromatograph.
5.3.2 Instrument conditions
5.3.2.1 Chromatographic column
A stainless-steel column of which the column length is about 3m, the inner
diameter is about 2mm, with built-in 13X molecular sieve, or 5A molecular sieve,
or NaY molecular sieve.
5.3.2.2 Operating parameters
The operating parameters of the instrument are selected according to the
instrument specification and detection limit requirements.
5.3.3 Determination steps
5.3.3.1 Turn on the instrument according to the instrument manual. Adjust the
operating parameters until the instrument parameters are stable.
5.3.3.2 Select appropriate chromatographic conditions, including: carrier gas
flow, sample gas flow, and instrument gas path balance.
5.3.3.3 Determination of standard sample. Immerse the conversion column of
determine the water content in hydrogen. When there is an objection to the
determination result, the method specified in GB/T 5832.2 shall be the
arbitration method.
5.5 Determination of total hydrocarbon content
The determination of total hydrocarbon content is carried out in accordance with
the provisions of GB/T 8984. Other equivalent methods are allowed. When
there is an objection to the determination result, the method specified in GB/T
8984 shall be the arbitration law.
5.6 Determination of oxygen content
The determination of oxygen content is carried out in accordance with the
provisions of GB/T 6285. Other equivalent methods are allowed. When there
are objections to the determination result, the method specified in GB/T 6285
shall be the arbitration law.
5.7 Determination of helium content
The determination of helium content is carried out in accordance with the
provisions of GB/T 27894.6. It is allowed to carry out the determination of helium
content according to the method specified in GB/T 27894.3. When there are
objections to the determination result, the method specified in GB/T 27894.6
shall be the arbitration method.
5.8 Determination of nitrogen and argon, carbon dioxide, carbon
monoxide content
The determination of the content of nitrogen, argon, carbon dioxide, and carbon
monoxide shall be carried out in accordance with the provisions of GB/T 3634.2.
5.9 Determination of total sulfur, formaldehyde, formic acid, ammonia,
total halide content, particulate matter concentration
The determination of total sulfur, formaldehyde, formic acid, ammonia, total
halide content, and particulate matter concentration shall be carried out in
accordance with the provisions of GB/T 37244. Other equivalent methods are
allowed. When there are objections to the determination result, the method
specified in GB/T 37244 shall be the arbitration law.
6 Packaging, marks, storage and transportation
The packaging, marks, storage and transportation of liquid hydrogen shall meet
the requirements of GB/T 40060.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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