Liquid hydrogen is a common liquid rocket fuel for rocketry application and is used by NASA and the U.S. Air Force, which operate a large number of liquid hydrogen tanks with an individual capacity up to 3.8 million liters (1 million U.S. gallons).

Oct 29, 2018 · Liquid hydrogen is used as cryogenic coolant, as a component of advanced fuel cells and as a critical component of the fuel used to power the engines of space shuttles. To liquefy hydrogen, it must be brought to its critical pressure …

Liquid hydrogen is a cryogen that poses technical challenges because of its liquefaction and storage at very low temperatures. Typically, hydrogen is transported and delivered as a liquid

Hydrogen is most commonly transported and delivered as a liquid when high-volume transport is needed in the absence of pipelines. To liquefy hydrogen it must be cooled to cryogenic temperatures through a liquefaction process.

Jun 18, 2022 · Liquid hydrogen, also known as slush hydrogen, is non-corrosive and colorless at 20 K. Liquid hydrogen, which requires cryogenic storage, is often used as concentrated form of hydrogen storage. Liquid hydrogen tanks can store 0.070 kg L −1 of liquid hydrogen compared to 0.030 kg L −1 as seen in case of compressed gas tanks.

Liquid hydrogen is non-corrosive and has a light-blue tint. Hydrogen undergoes a rapid phase change from liquid to gas when exposed to higher temperatures, so ventilation and pressure relief devices are built into cryogenic hydrogen systems to ensure safety.

Liquid hydrogen has a high gravimetric (33.3 kWh/kg) and medium volumetric (2.4 kWh/l) energy density, making it significantly more space-efficient than gaseous hydrogen and lighter than ammonia or LOHCs (Liquid Organic Hydrogen Carriers) per amount of stored energy.

Liquid hydrogen offers higher energy density and is easier to transport and store compared to gaseous hydrogen. Liquefaction is very energy-intensive and increases the cost of hydrogen beyond what is economically viable but ongoing research aims to improve its efficiency.