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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of National Technical Committee on Hydrogen Energy of Standardization Administration of China (SAC/TC 309).
Fuel specification for hydrogen powered vehicles - Liquid hydrogen (LH2)
1 Scope
This standard specifies the technical indexes, test methods, packaging, marking, storage and transportation requirements of liquid hydrogen fuel for hydrogen powered vehicles (hereinafter referred to as liquid hydrogen).
This standard is applicable to liquid hydrogen fuel for proton exchange membrane fuel cell vehicles stored in storage tanks, or transported by pipelines or tank cars.
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 ultra-pure 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 solid 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, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
GB/T 27894.6 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns
GB/T 37244 Fuel specification for proton exchange membrane fuel cell vehicles - Hydrogen
GB/T 40060 Technical requirements for storage and transportation of liquid hydrogen
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 24499 and the following apply.
3.1
parahydrogen conversion and measurement device
a device for converting equilibrium hydrogen at normal temperature into that in liquid nitrogen temperature zone to obtain standard samples for measurement
4 Requirements
The technical indexes shall meet those specified in Table 1.
Table 1 Technical index of liquid hydrogen
Item Index
Hydrogen purity (mole fraction) ≥ 99.97%
Parahydrogen content (volume fraction) ≥ 95%
Total content of non-hydrogen gas ≤ 300μmol/mol
Water (H2O) content ≤ 5μmol/mol
Total hydrocarbon content (calculated by CH4) a ≤ 2μmol/mol
Oxygen (O2) content ≤ 5μmol/mol
Helium (He) content ≤ 300μmol/mol
Total nitrogen (N2) and argon (Ar) content ≤ 100μmol/mol
Carbon dioxide (CO2) content ≤ 2μmol/mol
Carbon monoxide (CO) content ≤ 0.2μmol/mol
Total sulfur content (calculated by H2S) ≤ 0.004μmol/mol
Formaldehyde (HCHO) content ≤ 0.01μmol/mol
Formic acid (HCOOH) content ≤ 0.2μmol/mol
Ammonia (NH3) content ≤ 0.1μmol/mol
Total halide content (calculated by halide ion) ≤ 0.05μmol/mol
Particulate matter concentration ≤ 1mg/kg
a If the liquid hydrogen contains methane and the total hydrocarbon content is greater than 2μmol/mol, the total content of methane, nitrogen and argon shall not exceed 100μmol/mol.
5 Test methods
5.1 Sampling and judgment
5.1.1 Liquid hydrogen is sampled in the liquid phase, and after being completely vaporized by the sampling tube, it is sampled by the sampling cylinder or directly sent to the measuring instrument through the sampling tube. The sampling shall meet the requirements of GB/T 6681.
5.1.2 For pipeline transported liquid hydrogen with stable production, the sampling frequency shall be determined by the supplier and the purchaser. The pipeline transported liquid hydrogen products shall meet the technical requirements of this standard.
5.1.3 The liquid hydrogen filled in tank cars or storage tanks shall be inspected by tank upon completion of filling. If any index among the test results fails to meet the technical requirements in Table 1, this batch of products will be judged as rejected.
5.1.4 The sampling safety shall meet the relevant requirements of GB/T 3723.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Packaging, marking, storage and transportation
Annex A (Informative) Gas path diagram of gas chromatograph
Annex B (Normative) Curve for temperature-parahydrogen content
