Liquid hydrogen energy storage density

What is the density of liquid hydrogen?

The density of liquid hydrogen is only 70.85 kg/m 3 (at 20 K), a relative density of just 0.07. Although the specific energy is more than twice that of other fuels, this gives it a remarkably low volumetric energy density, many fold lower.

What is low-temperature hydrogen storage?

Low-temperature storage: involves storing hydrogen as a liquid at cryogenic temperatures (−253 °C or − 423 °F). The advantage of this approach is that liquid hydrogen has a much higher energy density than compressed hydrogen gas, which means that a larger amount of hydrogen can be stored in a smaller volume [69, 70].

What is liquid hydrogen storage?

Similar to compression of hydrogen, liquid hydrogen storage is a well-established technology . Liquefied hydrogen offers high rates of hydrogen release similar to compressed hydrogen and low adiabatic expansion energy at cryogenic condition [13, 27, 28].

What are the requirements for hydrogen storage?

A storage method that gives both a high gravimetric energy density and a high volumetric energy density is, therefore, a requirement. Additionally, moderate operating conditions, low enthalpy change, and fast kinetics of the hydrogen storage and release are the requirements. Safety, low cost, and public acceptance are the other important factors.

What is the energy density of hydrogen stored at 700 bar?

Hydrogen stored at 700 bar in Type III or Type IV vessel may provide a practical solution with refueling time less than 3 min and driving 500 km . At 700 bar with Type IV vessel, hydrogen has energy density of 5.7 MJ/L .

Is liquid hydrogen a viable storage and distribution method?

Additionally, liquid hydrogen is considered to be the most feasible storage and distribution method to facilitate the demand for mobility-based hydrogen considering economy, energy density, and technical issues .