grober
MB Master
https://www.glpautogas.info/documentos/HOW-REFUEL-HYDROGEN-CAR.pdf
I believe the tank is a composite rather than steel but even so 10,000 psi !
I believe the tank is a composite rather than steel but even so 10,000 psi !
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Combined with the energy needed to produce the hydrogen in first place….I read a long time back that to compress hydrogen for storage took one third of its energy value. Not sure if that was for it remaining gaseous or liquefying it (in which case it could include the refrigeration) but even compressing to 700 bar is going to consume some amount of energy. Probably the main reason hydrogen has remained the future for so long.
That could be done 'cleanly' though - via renewables and/or gas and carbon capture. But that electricity will of course be in demand elsewhere. The concept of hydrogen as 'energy storage' (eg, using solar to create hydrogen which can then be utilised in periods of darkness) is somewhat flawed given how difficult storage is.Combined with the energy needed to produce the hydrogen in first place….
Compare this to LPG in cars which (i think) is relatively low pressure - 100 psi?Having worked for many years with high pressure liquids and hydrocarbon gasses I'm concerned about the safety aspects of having a container of 10K psi highly flammable/explosive gas somewhere in a car - the distance gas cylinders (as in oxygen and acetylene metal cylinders) flew when they exploded in a land rig fire that occurred at Hatfield Moors in Yorkshire was frightening, and they were probably only at 3K psi before the fire.
I understand that the London MET has been running a trial with a small fleet of Hydrogen Toyotas in recent years.JCB signs green hydrogen deal worth billions
JCB will take 10% of the green hydrogen made by Australian mining company Fortescue Future Industries.www.bbc.co.uk
If done properly, its the future of clean energy. Not easy but worth the effort.
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