Chemistry:Liquid-hydrogen tank car

From HandWiki

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 17,000 pounds (7,711 kg) are used for transcontinental transport.[1][2]

Design

The pressure within the tank is 25 psi (170 kPa) or lower[3][4] with a temperature below 20.27 K (−423.17 °F or −252.87 °C) and a boil-off rate of 0.3% to 0.6% per day[5] 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 USA are classified as follows:[6]

  • DOT-113 tank cars (Cryogenic liquid tank cars)[7]
  • AAR-204W tank cars (Cryogenic liquid tank cars)[8]
  • AAR-204XT (Inside boxcar)

See also


References

  1. ↑ "Toward a liquid hydrogen fuel economy-Pag.9". deepblue.lib.umich.edu. http://deepblue.lib.umich.edu/bitstream/2027.42/5800/5/bac5758.0001.001.pdf. Retrieved 2015-04-06. 
  2. ↑ "Error: no |title= specified when using {{Cite web}}". deepblue.lib.umich.edu. http://deepblue.lib.umich.edu/bitstream/2027.42/5800/4/bac5758.0001.001.txt. Retrieved 2015-04-06. 
  3. ↑ Cryogenic rail tank cars Pag.3[yes|permanent dead link|dead link}}]
  4. ↑ Spencer, A.B.; Colonna, G.R. (2003). NFPA Pocket Guide to Hazardous Materials. National Fire Protection Association. p. 59. ISBN 9780877655589. https://books.google.com/books?id=0v6qmj4HRB8C. Retrieved 2015-04-06. 
  5. ↑ "Costs of storing and transporting hydrogen Pag.50". www1.eere.energy.gov. http://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/25106.pdf. Retrieved 2015-04-06. 
  6. ↑ "Field guide to rail cars". http://chemresponsetool.noaa.gov/containers_guide/railcar.htm. Retrieved 2015-04-06. 
  7. ↑ "eCFR — Code of Federal Regulations | DOT113". ecfr.gpoaccess.gov. http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr;sid=24ae290bce753d56dcf23523424ec96a;rgn=div6;view=text;node=49%3A2.1.1.3.14.6;idno=49;cc=ecfr. Retrieved 2015-04-06. 
  8. ↑ "Railroad tank car specification marking system". henrycoema.org. http://www.henrycoema.org/forms/RailRoad%20Tank%20Car%20Marking%20System.pdf. Retrieved 2015-04-06. 

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Liquid-hydrogen_tank_car&oldid=3711176"