Liquid Hydrogen: The Infinity Fuel for a Sustainable Future™
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Friday, November 14, 2025
Liquid Hydrogen Newsletter (November, 2025)
This newsletter shares global highlights of liquid hydrogen (LH2) systems news, developments, best practices, training, tools, technologies, and other LH2 related content.
LH2 Newsletter
(November, 2025)
This newsletter shares global highlights of liquid hydrogen (LH2) systems news, developments, best practices, training, tools, technologies, and other LH2 related content.
Spotlight
Hydrogen Aviation
Among the viable options available, hydrogen is a primary long-term solution for fully decarbonizing aviation. It's increasing use requires a paradigm shift in conventional aircraft and airport infrastructure systems engineering and integration.
Some initial design drivers to consider include: volumetric density, systems integration, cryogenic engineering (for LH2), operations, and safety. Aerospace lessons learned in large scale, full lifecycle hydrogen systems use for many decades are being applied and refined in a multitude of new aircraft demonstrations and airport infrastructures.
This topic will be discussed in two upcoming presentations that are free to attend. The first is an in-person event at the Ohio Aerospace Institute on Nov 18th. The second is a Mission Hydrogen webinar on Dec 3rd. The organizations and people who are at the forefront of hydrogen aviation along with publicly disclosed details on their latest advancements will be highlighted.
Cryogenic Dewar Sizing Ap
The new online cryogenic dewar sizing app is helpful for initial concept designs of stationary and mobile LH2 storage vessels. Sizing of the usable capacity, insulation specifications, and heat leak estimates from all sources are current built-in capabilities.
The app enables a variety of design trades to be quickly investigated with an easy to use interface. Variable design inputs are immediately incorporated into the results in order to explore their impact on key performance metrics. A mass estimation feature is under development that will be particularly useful for mobility applications such as aircraft.
Slides from the hydrogen aviation presentations mentioned above can be previewed on the H2 Sage site in the "Aviation" briefing. This site also has links to the cryogenic dewar sizing app and quick start guidelines for using it.
"Heat leak estimation for a cryogenic dewar requires identifying all environmental heat loads. Previous posts discussed sizing of the inner vessel and selection of the insulation around it. This post focuses on additional heat transfer from solid conduction paths into the inner vessel..."
"Specify the cryogenic fluid, storage pressure, volumetric constraints, tank geometry and dimensions. Calculated results include the saturated liquid temperature and density, total volume, and usable liquid mass. A three dimensional rendering of the inner vessel is also displayed for assessment."
"Choose an insulation type or specify a user defined insulation. Input the insulation thickness, degradation factor, and warm boundary temperature. Calculated results include the heat flux and areal density."
The LH2 lecture video on the anthropocene, its effects, and the potential of hydrogen to address it is available on-demand for free through the entire month of November.
The current and previous newsletter issues are available online at the LH2 Era™ blog. They are also posted to the LinkedIn Global Liquid Hydrogen (LH2) Systems group and emailed to interested individuals. If you would like to receive the email version, click here.
