• Why does H2 warm up during the fuelling process?

    Posted by Andreas Habbig on May 9, 2023 at 06:56

    Hello!

    I would like to know how exactly H2 is changing his temperature during the fuelling process and therefore, why the cooling of H2 during the process is necessary.

    Due to the Inversion point of H2 at -80°C, it has a negative Joule-Thomson-Effect, which means that H2 is heating up, while it is expanding.

    Then again, during the refuelling process, the pressure inside the tank is rising up to 700 bar, wich means that the fuelled H2 is cooling down again.

    Now, if we would choose a H2 storage at the fuel station at 700 bar, the additional cooling of H2 would not be necessary, right?

    How exactly do i calculate the temperature changing of H2 during the refuelling process?

    Thank you!

    Andreas Habbig replied 1 year, 1 month ago 1 Member · 0 Replies
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