Quote: "Hydrogen, is highly flammable and explosive in air. Storage is a problem, fill a metal storage tank with it under pressure - come back in a couple of days and half will have disappeared!!"
I disagree on both counts. Hydrogen stored in the correct pressurised cylinder is MUCH safer than a tank full of petrol. It is very unlikely to be breached in a collision unlike a steel or plastic petrol tank. I once saw a demonstration where a marksman fired a high power rifle at a hydrogen cylinder and at a petrol tank. The petrol tank exploded in a most spectacular fashion whereas the hydrogen cylinder simply leaked with no fire. Agreed once it is out of the cylinder you have a problem, but as I said those cylinders are tough.
We have lived with petrol for so long we are blase about just how dangerous it is.
In the lab where I worked we used hydrogen cylinders to operate some of our equipment. They certainly didn't lose any gas just standing.
Like any flammable material if it’s stored correctly it’s fine.
What I said is hydrogen is highly flammable and explosive in air - it is - fact, and I agree with your comments on petrol. We are complacent.
Large scale industrial storage of hydrogen loses significant volume of the gas through the walls of the tank if left unused.
If you look at any large scale industrial process using hydrogen - now it’s generated onsite, almost on demand for that reason.
1976 Tahiti Sprint
2017 Mercedes c350e Hybrid Estate
2009 Honda S2000 Berlina Black one of the last
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