The EMPIR Metrology for Hydrogen Vehicles will be the first large scale project of its kind that will tackle the four measurement challenges that currently prevent the industry from meeting requirements set by International Standards such as flow metering, quality control, quality assurance and sampling.
The specific objectives of the project are:
- Flow metering – To develop a metrological framework for testing hydrogen meters used to measure the mass of hydrogen dispensed into a fuel cell vehicle from a refueling station. The metrological and technical requirements stipulated in OIML R 139-1 and international standard SAE J2601 – Fueling Protocols for Light Duty Gaseous Hydrogen Surface Vehicles should be followed, with a target accuracy of 1% (WP1).
- Hydrogen quality assurance – To support hydrogen purity testing as specified in ISO 14687 by developing traceable offline gas analysis methods, stable and accurate primary reference gas mixtures and the metrological tools to enable the introduction of low cost gas analyzers suitable for use by commercial gas analysis laboratories. In addition, to develop a robust method for accurately performing online measurement of particulates (to determine whether levels are above or below 1 mg/kg) in hydrogen provided at the refueling station, as specified in ISO 14687 (WP2).
- Hydrogen quality control – To perform purity measurements of hydrogen following the implementation of quality control techniques specified in ISO 19880-8 and validate continuous online hydrogen purity analyzers for measuring canary species (the key impurities that guarantee global quality of the hydrogen) at the HRS (WP3).
- Sampling – To develop a robust protocol for taking a representative sample of hydrogen gas from a refueling station and testing suitability of high pressure sampling vessels for delivering hydrogen to gas analysis laboratories for offline purity analysis; as required by ISO 14687 (WP4).
- Creating impact – To facilitate the take up of the technology and measurement infrastructure developed in the project by the measurement supply chain (accredited laboratories, instrument manufacturers), standards developing organizations (ISO, CEN/CENELEC) and end users (hydrogen industry, vehicle manufacturers and suppliers) (WP5).