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While refuelling liquid hydrogen storage systems using current technology, a certain amount of gas evaporates and is transferred back to the filling station. This so-called back-gas contributes significantly to a deterioration in the overall energy balance of liquid hydrogen as a fuel for automobiles. Based on data gained from dedicated measurements of a current prototype tank system, the thermodynamic state of the filled hydrogen was varied. It could be confirmed that a minimum amount of back-gas can be reached if the temperature of the transferred liquid is more than 2 K below the boiling temperature. Moreover, the data prove that the reason for the production of back-gas is not so much flashing but evaporation due to heat in-leak into the filling line. Based on these data, an optimised filling procedure for automotive liquid hydrogen storage systems shall be defined.
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Details
- Original title: Analysis of the back-gas behaviour of an automotive liquid hydrogen storage system during refilling at the filling station.
- Record ID : 2007-1840
- Languages: English
- Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
- Publication date: 2006/07/17
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Indexing
- Themes: Gas liquefaction and separation
- Keywords: Fuel (vehicles); Enhancement; Car; Liquid; Process; Hydrogen; Distribution
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Compact cryogenic valves for liquefied hydrogen...
- Author(s) : BRÜTSCH D., HOLDENER F.
- Date : 2006/07/17
- Languages : English
- Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
- Formats : PDF
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Liquid hydrogen: a clean energy?
- Author(s) : FLECK U., KÜNDIG A.
- Date : 2002/07/22
- Languages : English
- Source: Proceedings of the nineteenth International Cryogenic Engineering Conference. ICEC 19.
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CO2 and H2H cryogenic removal process evaluatio...
- Author(s) : SPITONI M., XIONG X., ARTECONI A., et al.
- Date : 2017/05/15
- Languages : English
- Source: Cryogenics 2017. Proceedings of the 14th IIR International Conference: Dresden, Germany, Mai 15-19, 2017.
- Formats : PDF
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Development of a cryocar on the basis of liquid...
- Author(s) : BONDARENKO S. I., LEVIN A. Y. A., PYATAK A. I., et al.
- Date : 2004/04/27
- Languages : English
- Source: Cryogenics 2004. Proceedings of the 8th Cryogenics Conference
- Formats : PDF
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Wasserstoff als Kryokraftstoff.
- Author(s) : PESCHKA W.
- Date : 1996/11/20
- Languages : German
- Source: DKV-Tagungsbericht 23. 1996 Leipzig.
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