4 ms·
“Hydrogen bomb” is a little exaggerated. But to your detractors: “More than a gasoline bomb, hopefully. Gasoline is more dangerous.” Citation needed. How is g
by hydrogtehd 5y ago
“Hydrogen bomb” is a little exaggerated. But to your detractors:
“More than a gasoline bomb, hopefully. Gasoline is more dangerous.”
Citation needed. How is gasoline more dangerous? While gasoline is very dangerous, gasoline is a liquid and will not burn until vaporized; Gasoline is dangerous because it vaporizes quickly. H2 is already a gas and has a ridiculously low spark energy. Furthermore H2 is under pressure.
Gas does have a lower auto-ignition T than H2, that’s no fun, but overall H2 scores worse than gasoline.
“Do you ride on a CNG city bus?”
CNG stands for Compressed Natural Gas; i.e. methane. Methane is a lot easier and safer to use than H2 because it:
- Packs a lot more energy vs. P so the tanks don’t have to be as strong
- Doesn’t embrittle the container
- Much higher spark energy (in fact, CH4 is kinda hard to light)
- Smaller flammability range (i.e. mixture with air that will ignite)
- lower auto-ignition T
[1] https://en.wikipedia.org/wiki/Flammability_limit https://en.wikipedia.org/wiki/Flammability_limit
- wglb 5y agoAnd you can't see a hydrogen flame.
- JimTheMan 5y agoI work with a guy who was involved in a near miss incident with these cannisters. They are not risk free, although you could argue that the accidents are rare and potentially worth the risk? https://www.busnews.com.au/industry-news/1201/gas-bus-explosion-under-investigation https://www.busnews.com.au/industry-news/1201/gas-bus-explos... https://www.ctif.org/news/cause-stockholm-cng-bus-explosion-has-now-been-determined https://www.ctif.org/news/cause-stockholm-cng-bus-explosion-... https://hal-ineris.archives-ouvertes.fr/ineris-00976180/document https://hal-ineris.archives-ouvertes.fr/ineris-00976180/docu...
- hydrogtehd 5y ago“ although you could argue that the accidents are rare and potentially worth the risk?” I agree. I don’t know if they’re technologically feasible at the price point necessary to put them in a few billion cars. But this “safety” obsession has gotten old.