Overcoming Challenges in Liquid Hydrogen Storage

The dream of having a green hydrogen economy can only be achieved when issues related to storing of liquid hydrogen in a safe manner can be dealt with. Hydrogen storage companies are looking to develop technologies that allow the advancement of hydrogen and fuel cell technologies in varied applications like stationary and portable power and transportation. We at GenH2 have developed specialized solutions for the production and storage of clean liquid hydrogen in an environment-friendly manner. With more and more automobile companies planning hydrogen vehicles in the future, our filling stations will prove to be very useful.

Conquering Issues Hydrogen Production Companies are Facing

 

Hydrogen can be stored as a gas in high pressure tanks while in the liquid form it requires cryogenic temperatures since its boiling point at one atmosphere pressure is -252.8 degrees Celsius.

  • Hydrogen is the lightest gas in the universe. When we compare hydrogen to gasoline in terms of weight it is nearly 3 times the energy content. 

  • However, on a volume basis, the situation is reversed making its storage difficult unless the volume is reduced.


To deal with this, hydrogen producers are looking for advanced storage methods that have higher energy density. This is achieved by converting the hydrogen gas to liquid hydrogen by cooling it to a very low temperature. This technology is currently being adopted for special applications like space travel, drones, and thermal insulation systems. 

Factors Restraining Use of Liquid Hydrogen Tanks

The use of Liquid hydrogen in vehicles is restricted due to the following factors:

  • Around 35% of the fuel energy is used to turn the fluid to a liquid state which is three times more than what is needed to compress it.

  • Due to the hydrogen boil-off- the liquid hydrogen can evaporate even when stored in highly insulated tanks.

  • The pressure of the liquid hydrogen quickly increases as the heat is absorbed from the environment. This requires venting the tank every few days.


Liquid Hydrogen Tanks for Vehicles

For hydrogen to emerge as a competitive option for vehicles, there is a need to develop special storage systems. These systems are required to achieve targets that will allow hydrogen-fueled vehicle platforms to meet customer performance expectations in terms of range, passenger, and cargo space, refueling time and the overall performance of the vehicle. Hydrogen must be stored in insulated tanks to maintain the low temperature of -253 degrees C and minimize evaporation. Newer technologies are being developed to make liquefaction a viable storage option.

Our Modular Hydrogen Filling Stations

We at GenH
2 in coordination with former NASA and DOD scientists and engineers have developed an end-to-end station solution. Our solution is capable of onsite hydrogen production of up to 1250 KG per day and comes with an integrated carbon capture solution. Each station comes with the option of storing hydrogen in either gaseous or liquid form and is highly suitable to be installed at the existing filling stations. The touch-screen dispensers of these stations allow customers to interact and choose their preferences.