The project work packages are described in the sections below

WP1 Description

The aim of this work package is to provide industry with an economically feasible method of proving HRS accuracy for periodical certification, via a traceability chain comprised of secondary/transfer standards under-pinned by primary standards. This traceability should cover light (cars and vans, 0.5-6 kg) and heavy-duty (buses and trucks, 4-40 kg) FCEV scale refuelling.  It will also prove that these concepts could be extended to refuelling of trains and trams (up to 200 kg).

Primary standards to verify hydrogen flow meters under real conditions using 875 bar hydrogen will be made available by the project for a large spectrum of vehicles (light and heavy-duty) and high flow stations. Data sets for the establishment of recommendations for the periodicity of verification of HRS based on their design will also be developed by the project. NMIs and DIs, using the primary standards developed in this project will be able to provide traceability to industry secondary standards for flow verification and claim CMCs.

The project will support the revision of OIML R 139 with technical evidence and guidelines on calibration, achievable uncertainty, flow metering for light and heavy-duty vehicles at hydrogen refuelling stations and verification periodicity.

Through the project, HRS operators and notified bodies will have access to several internationally recognised primary standards for initial verification and type-approval as well as traceable secondary standards for flow verification according to OIML recommendations. Considering the deployment of 4500 HRS in Europe by 2030 compliant to local and European regulations, the project outcomes will support a significant reduction in the cost and time for flow verification while ensuring accuracy and traceability.

Contact information: Marc de Huu, METAS

WP2 Description

European laboratories are developing the capability to measure the contaminants specified in ISO 14687:2019 and EN 17124:2018. However, the current lack of gas calibrants with sufficient uncertainty, reference materials (RM) for validation and inter-laboratory comparison scheme is a barrier for European commercial laboratories to be able to prove their agreement to ISO 21087:2019. 

The aim of this work package is to support the compliance of analytical laboratory with ISO 21087:2019 and provide metrological guidelines to use online analyser and sensors at HRS. The JRP will develop the first static reference materials with traceable composition for all gaseous contaminants regulated in EN 17124 and ISO 14687-2. The development of stable and accurate primary reference gas mixtures is essential to underpin the traceability of purity measurements for the assurance of fuel cell hydrogen quality. 

Commercial gas analysis laboratories and instrument providers will be able to demonstrate ISO 14687:2019 capabilities in compliance with ISO 21087:2019 using the RMs and gas calibrants developed in the project. This will allow such commercial gas analysis laboratories and instrument providers to demonstrate they are competent and able to provide traceable measurements for hydrogen fuel quality. 

Hydrogen fuel quality control require continuous monitoring by HRS operators. The development of sensors that can continuously monitor key contaminants will ensure that such contaminants never reach the FC vehicles. After MetroHyVe validation of online analyser and sensor review, the JRP will validate sensors in laboratory condition and implement them at HRS to develop metrological guidances on operating accurately analysers and sensors.

The deployment of the accurate and traceable European hydrogen quality laboratories and sensor will help to prevent serious damage to FCEVs which would be costly for automotive manufacturers and fleet operators. Considering the European target of 1 million FCEVs in 2030, the reduction in risk of FCEV damage due to hydrogen fuel quality is a critical for fleet operators.

Contact information: Karine Arrhenius, RISE

WP3 Description

Currently, there is a lack of harmonised guidelines or ISO standards for hydrogen fuel sampling at HRS. Three sampling methods used for taking hydrogen gas and particulates from a refuelling station have been reported in ISO 19880-1 Annex K. However, the sampling methods needs to be compared in order to prove sampling equivalence worldwide. Standardisation bodies (ISO TC 197) need technical evidence to revise the standards (ISO 19880-1).

The aim of this work package is to support the harmonisation of hydrogen fuel sampling. The JRP partners will study the entire sampling chain from the sampling equipment, sampling procedure to sampling container. The deliverables will provide technical evidences and guidelines for drafting of a future hydrogen sampling standard or revision of ISO 19880-1 annex K. The overall work package will provide reliability in the hydrogen sampling and provide recommendations for future expansion of hydrogen fuel (new HRS, new sampling strategies).

Contact information: Thomas Bacquart, NPL

WP4 Description

Automotive FC stack testing is the critical component to power electrical vehicles using hydrogen. The length of the FC stack lifetime is dependent upon its exposure to contaminants (i.e. sulphur or halogenated) during its lifetime. Understanding the impact of contaminants on the FC stack is a crucial parameter to ensure the lifetime of FCEV and to update the ISO 14687 standard. 

Studying and defining the critical parameters in FC stack testing with a recirculation loop will enable a step forward in the reliability of contaminant impact studies. The lack of harmonisation of this methodology has hampered objective comparative assessment of FC stack performance and durability under operating conditions (reproducibility issue) and hence of their technological progress.

This work package will focus on producing recommendations that could be used in the development of a standard test methodology for FC stack impurity measurements. The focus is on measurement setups, procedures, online analysis and measurement accuracy. The FC stack test systems will be characterised and critical parameters that should be monitored will be defined. The requirements for the online analysis system will be defined. The standard test protocols for FC stack measurements will be developed. Finally, a good practice guide on measuring the impact of contaminants on FC stacks will be developed.

Contact information: Jaana Viitakangas, VTT

WP5 Description

The objective of this work package is to facilitate update of technology and metrology outcome of the project by stakeholders, standard developing organisations and end users.

Contact information: Thor Anders Aarhaug, SINTEF Industry