A new standard for hydrogen, part 3
Existing specifications have been a good starting point for standardisation of hydrogen quality, but they need rethinking—a 99.5 mol-% specification is a promising candidate
Unlike natural gas, hydrogen is not a natural product and therefore does not consist of a complex mixture of substances. While all components that contribute to the calorific value of natural gas are taken into account for custody transfer billing, many countries are realising it makes more sense to only charge for the mole fraction of hydrogen and to disregard components that also contribute to the calorific value (e.g. methane). This approach incentivises the feed-in of purer hydrogen and considers the fact that hydrogen will also be used as a feedstock in the future (more so than natural gas). It is clear that the outcome of the DNV KIWA analysis, discussed in the second part of this thre
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