A ''' liquid-hydrogen trailer''' is a [[semi-trailer|trailer]] designed to carry [[cryogenic]] [[liquid hydrogen]] (LH<sub>2</sub>) on roads being [[towing|pulled]] by a [[tractor unit|powered vehicle]]. The largest such vehicles are similar to [[railroad]] [[tank container|tanktainers]] which are also designed to carry liquefied loads. Liquid-hydrogen trailers tend to be large; they are [[Thermal insulation|insulated]]. Some are [[semi-trailer]]s.<ref>[http://www.fibacanning.com/Cryogenic/Cryogenic%20Liquid%20Hydrogen%20Tankers%20for%20sale-flyer.pdf Semi trailer hydrogen tanker truck] {{webarchive|url=https://web.archive.org/web/20110710235720/http://www.fibacanning.com/Cryogenic/Cryogenic%20Liquid%20Hydrogen%20Tankers%20for%20sale-flyer.pdf |date=2011-07-10 }}</ref>
==History== The [[U-1 (semi-trailer)|U-1 semi-trailer]] was a liquid-hydrogen trailer designed in the 1950s to carry [[cryogenic]] [[liquid hydrogen]] (LH<sub>2</sub>) on roads being [[towing|pulled]] by a [[Tractor unit|powered vehicle]]. It was constructed by the Cambridge Corporation and had a capacity of {{convert|26000|L|USgal impgal|sp=us}} with a [[hydrogen]] loss rate of approximately 2 percent per day. The U-1 was a single-[[axle]] [[semi-trailer]]. The specifications for its successor the U-2, a double axle semi-trailer, were issued on 15 March 1957.<ref>[https://history.nasa.gov/SP-4404/ch8-11.htm NASA-LIQUID HYDROGEN AS A PROPULSION FUEL, 1945–1959]</ref>
==Size and volume== Liquid hydrogen trailers are referenced by their size or volume capacity. Liquid-hydrogen trailers typically have capacities ranging from {{convert|28400|to|49200|L|USgal impgal|0|sp=us}} gross volume.<ref>[http://www.fibacanning.com/Cryogenic/liquid_hydrogen_tankers_available.htm liquid hydrogen trailers] {{webarchive|url=https://web.archive.org/web/20081006122334/http://www.fibacanning.com/Cryogenic/liquid_hydrogen_tankers_available.htm |date=2008-10-06 }}</ref><ref>[https://worthingtonindustries.com/getmedia/87bfa6a3-2205-45c9-98ff-25f0b89fc2ac/Industrial-Gas-Transport-Trailers.pdf Worthington Industries CRYOGENIC TRANSPORT TRAILERS]</ref>
==See also== {{div col|colwidth=30em}} * [[Compressed-hydrogen tube trailer]] * [[Hydrogen economy]] * [[Hydrogen infrastructure]] * [[Liquid-hydrogen tank car]] * [[Liquid-hydrogen tanktainer]] * [[Trailer (vehicle)]] {{div col end}}
==References== {{reflist}}
==External links== *[https://web.archive.org/web/20080618045408/http://www.ika.rwth-aachen.de/r2h/index.php/Liquid_Hydrogen_Transport_by_Truck Liquid Hydrogen Transport by Truck] {{truck-stub}} {{HydrogenDelivery}} [[Category:Trailers]] [[Category:Hydrogen infrastructure]] [[Category:Industrial gases]] [[Category:Cryogenics]]