Hydrogen for transportation

[Nicknick]

There are different types of fuel cells with totally different applications. Fuel cells for any vehicle or plane need to be able to be switched on and off daily (maybe expet APU for large planes) and to be operated with many load changes. All fuel cells which fullfill this demands are running on hydrogen. If any other fuel (fossil, synthetic Diesel, Ammonia...) shall be used for them, it has to be converted to hydrogen before, which usually reduces the efficiency and increases cost, weight and volume.

High temperature fuel cells can run on Methan directly and are very efficient, but they need to run continously because every new start will reduce their lifespan significantly.

 

[Zoo Tycoon]

High temperature fuel cells can run on Methan directly and are very efficient, but they need to run continously because every new start will reduce their lifespan significantly.

Well yes they can but purity is the real world issue. Even PPM levels of impurities accumulate with time to kill the delicate membranes.

Ammonia can be processed by FC without prior conversion to hydrogen.

Recent progress in ammonia fuel cells and their potential applications

Conventional technologies are largely powered by fossil fuel exploitation and have ultimately led to extensive environmental concerns. Hydrogen is an excellent carbon-free energy carrier, but its storage and long-distance transportation remain big challenges. Ammonia, however, is a promising...

pubs.rsc.org

 

[Grey Havoc]

WEVA partnership looks to accelerate emissions-free inland shipping

 

[publiusr]

Looks a bit like the Big Fitz

 

[Grey Havoc]

On a tangent that may be of interest:

View: https://www.youtube.com/watch?v=vJjKwSF9gT8

 

[Grey Havoc]

Funding for UK project to store hydrogen using depleted uranium : Corporate - World Nuclear News

A consortium comprising EDF UK R&D, the UK Atomic Energy Authority, the University of Bristol and Urenco has been awarded GBP7.7 million (USD9.3 million) in funding from the UK's Department for Business, Energy & Industrial Strategy to develop a hydrogen storage solution.

www.world-nuclear-news.org

 

[Zoo Tycoon]

Currently everywhere;-

 

[Foo Fighter]

MSN

This makes it opfficial I suppose. BE aircraft, tsssk.

 

[GruntFox]

MSN

This makes it opfficial I suppose. BE aircraft, tsssk.

Yeah, no. While hydrogen doesn't harm the environment, it completely and utterly loses in the energy storage race until you get into nuclear reactions. So, instead of having your car or aircraft mostly passengers and cargo, it's now mostly fuel tank. Basically the rocket problem.

 

[Zoo Tycoon]

While hydrogen doesn't harm the environment, it completely and utterly loses in the energy storage race until you get into nuclear reactions.

Hydrogen leaked into the atmosphere is nasty for global warming. H2 in the atmosphere has a global warming potential (GWP) of 13 to 200;- http://agage.mit.edu/publications/global-environmental-impacts-hydrogen-economy

That’s one ton of hydrogen may cause the same global warming as up to 200 tons of CO2.

Hydrogen being the smallest molecule inherently leaks, it even seeps through metal. If the current natural gas infrastructure leakage is not significantly bettered then H2 will be worse global warming than our fossil fuel’s.

Edit ——- Whoops copied the wrong link

Should have been this one;-

News

Or this one

Scientists warn against global warming effect of hydrogen leaks

Recent studies suggest that hydrogen could be a contributor to the greenhouse effect when it leaks through infrastructure.

www.euractiv.com

 

[1635yankee]

While hydrogen doesn't harm the environment, it completely and utterly loses in the energy storage race until you get into nuclear reactions.

Hydrogen leaked into the atmosphere is nasty for global warming. H2 in the atmosphere has a global warming potential (GWP) of 13 to 200;- http://agage.mit.edu/publications/global-environmental-impacts-hydrogen-economy

That’s one ton of hydrogen may cause the same global warming as 200 tons of CO2.

Hydrogen being the smallest molecule inherently leaks, it even seeps through metal. If the current natural gas infrastructure leakage is not significantly bettered then H2 will be worse global warming than our fossil fuel’s.

It also escapes the atmosphere fairly quickly.

As an aside, diatomic molecules (like hydrogen) tend not to react strongly in the infra-red spectrum; molecules with three or more atoms tend to have much stronger interactions in the infra-red.