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Liquid-hydrogen tank car

Railroad vehicle for transporting cryogenic material

Summary

Railroad vehicle for transporting cryogenic material

A liquid hydrogen tank car, also called liquid hydrogen tank wagon or liquid hydrogen tanker wagon, is a railroad tank car designed to carry cryogenic liquid hydrogen (LH2). LH2 tank cars with a capacity of 17000 lb are used for transcontinental transport.

Design

The pressure within the tank is 25 psi or lower with a temperature below 20.27 K (−423.17 °F) and a boil-off rate of 0.3% to 0.6% per day The tank is double walled like a vacuum flask with multi-layer insulation, with the valves and fittings enclosed in a cabinet at the lower side or end of the car.

Classes

Cryogenic liquid tank cars in the US are classified as follows:

  • DOT-113 tank cars (Cryogenic liquid tank cars)
  • AAR-204W tank cars (Cryogenic liquid tank cars)
  • AAR-204XT (Inside boxcar)

References

References

  1. "Toward a liquid hydrogen fuel economy-Pag.9". deepblue.lib.umich.edu.
  2. Jones, Lawrence W.. (1970). "Toward a Liquid Hydrogen Fuel Economy". deepblue.lib.umich.edu.
  3. [http://www.ofia.net/Assets/dept_1/PM/pdf/HMOIG05D.DOC Cryogenic rail tank cars Pag.3]{{dead link. (May 2017)
  4. (2003). "NFPA Pocket Guide to Hazardous Materials". National Fire Protection Association.
  5. "Costs of storing and transporting hydrogen Pag.50". www1.eere.energy.gov.
  6. "Field guide to rail cars".
  7. "eCFR — Code of Federal Regulations | DOT113". ecfr.gpoaccess.gov.
  8. "Railroad tank car specification marking system". henrycoema.org.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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