New Heinrich high-precision mass flow meter for H2 filling stations; OIML R 139 2018

Green Car Congress
By mmillikinJan 30, 2021, 4:00 am262 pts
Hydrogen fueling is more complex than that of gasoline and diesel; hydrogen heats up as it expands, causing pressure and temperature changes during fueling that need to be precisely monitored. (Hydrogen, helium and neon are the three gases that do not cool upon expansion by the Joule–Thomson process when…

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