Liquid hydrogen tank car
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 tank cars with a capacity of are used for transcontinental transport.Design
The pressure within the tank is or lower with a temperature below 20.27 K 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 USA are classified as follows:
- DOT-113 tank cars
- AAR-204W tank cars
- AAR-204XT
