Work

Preparation of gas standards for quality assurance of hydrogen fuel

Year: 2022

Type: article

Abstract: This study has developed traceable standards for evaluating impurities in hydrogen fuel according to ISO 14687. Impurities in raw H2, including sub μmol/mol levels of CO, CO2, and CH4, were analyzed using multiple detectors while avoiding contamination. The gravimetric standards prepared included mixtures of the following nominal concentrations: 1, 2, 3–5, 8–11, 17–23, and 47–65 μmol/mol for CO2, CH4 and CO, O2, N2, Ar, and He, respectively. The expanded uncertainty ranges were 0.8% for Ar, N2, and He, 1% for CH4 and CO, and 2% for CO2 and O2. These standards were stable, while that for CO varied by only 0.5% during a time span of three years. The prepared standards are useful for evaluating the compliance of H2 fuel in service stations with ISO 14687 quality requirements.

Source: International Journal of Hydrogen Energy

DOI: 10.1016/j.ijhydene.2022.05.141

Authors: Jeongsoon Lee, Sangwoo Kim, Gwangsup Kim

Institutions: Korea Research Institute of Standards and Science, Korea University of Science and Technology

Language: English

Topic: Scientific Measurement and Uncertainty Evaluation

Subfield: Statistics, Probability and Uncertainty

Field: Decision Sciences

Domain: Social Sciences

Open Access status: hybrid

Estimated APC paid: $3,250

Funders: Ministry of Trade, Industry and Energy, Korea Research Institute of Standards and Science, Korea Institute of Energy Technology Evaluation and Planning