Dutch hydrogen expertise
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Stirling Cryogenics is involved in many different markets requiring either liquid gases as product or cooling power for applications working at cryogenic temperature. Based on the two-stage Stirling Cryogenerators we offer a range of hydrogen liquefaction systems producing 5 kg/day of LH2 up to 2.000 kg/day. These systems need H2 gas and electric power as input, producing para LH2 into a transfer vessel.
Incoming hydrogen gas is cooled to 80K in the first stage, so no LN2 requirement. Gas is then liquefied at 20K in the second stage during which catalysts will perform the ortho-para conversion. The liquid flows into a transfer vessel by gravity, from which the LH2 is transferred to the storage tank.
Our systems are built according ATEX or other relevant coding and will include all necessary internal piping, instrumentation, catalytic ortho-para conversion, containerising, transfer vessel and system control. Alternatively, Stirling Cryogenerators can be supplied as modules to a system integrator building the total system with the Cryogenerators as the core.
A Stirling Cryogenerator will start producing LH2 within 20 min of warm start-up, hence a system can react swiftly when GH2 flow increases again. Besides the production of LH2, the Stirling Cryogenerator can also be used as a re-liquefier for boil-off gas of a storage tank, preventing GH2 blow-off.
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