▲ 123 ▼ India launches first hydrogen-powered train built in the country to expand clean energy on railways (apnews.com) submitted 1 month ago by FoxtrotDeltaTango@sh.itjust.works to c/technology@lemmy.world 20 comments fedilink hide all child comments cross-posted from: https://lemmy.world/post/49581602
[–] SW42@lemmy.world 19 points 1 month ago (6 children) I sense a big kaboom in this train’s future. permalink fedilink source hideshow 6 child comments replies: [–] Ebby@lemmy.ssba.com 12 points 1 month ago (3 children) No specialist or anything, but I imagine most of the kaboom potential is puncture-based. I don't expect much to make it to the heart of a train as trains generally win in collisions. Pressure vessel fatigue is possible too, but generally rated and tested well above pressure relief valves. permalink fedilink source parent hideshow 3 child comments replies: [–] frongt@lemmy.zip 2 points 1 month ago (2 children) Depends on how you define "win". It only takes one small hydrogen leak for a catastrophe. A train will wreck any car or truck for sure, hit or miss with another train, but even a simple derailment of tanker cars often results in a significant mess. There are nuclear rail transport containers that have been tested in collisions, and they've never leaked, but they're very big and heavy for not a whole lot of volume. And they're sealed, while a fuel tank needs holes to let fuel in and out. permalink fedilink source parent hideshow 2 child comments replies: [–] dgriffith@aussie.zone 2 points 1 month ago (1 child) Luckily hydrogen floats upwards pretty quickly. So paradoxically, storage tanks are safer the less protection they have around them. Or at least, above them. permalink fedilink source parent hideshow 1 child comment replies: [–] davidagain@lemmy.world 2 points 1 month ago* Just as well trains and other vehicles don't have roofs then. Fun fact: Unlike natural gas, which needs enough oxygen and enough gas to explode, hydrogen is explosive at almost any concentration of hydrogen and oxygen! Boom! Woohoo! permalink fedilink source parent [–] newton@feddit.online 3 points 1 month ago Yes Rico,kaboum permalink fedilink source parent [–] phutatorius@lemmy.zip 2 points 1 month ago I suggest they name the train the Hindenburg. permalink fedilink source parent
[–] Ebby@lemmy.ssba.com 12 points 1 month ago (3 children) No specialist or anything, but I imagine most of the kaboom potential is puncture-based. I don't expect much to make it to the heart of a train as trains generally win in collisions. Pressure vessel fatigue is possible too, but generally rated and tested well above pressure relief valves. permalink fedilink source parent hideshow 3 child comments replies: [–] frongt@lemmy.zip 2 points 1 month ago (2 children) Depends on how you define "win". It only takes one small hydrogen leak for a catastrophe. A train will wreck any car or truck for sure, hit or miss with another train, but even a simple derailment of tanker cars often results in a significant mess. There are nuclear rail transport containers that have been tested in collisions, and they've never leaked, but they're very big and heavy for not a whole lot of volume. And they're sealed, while a fuel tank needs holes to let fuel in and out. permalink fedilink source parent hideshow 2 child comments replies: [–] dgriffith@aussie.zone 2 points 1 month ago (1 child) Luckily hydrogen floats upwards pretty quickly. So paradoxically, storage tanks are safer the less protection they have around them. Or at least, above them. permalink fedilink source parent hideshow 1 child comment replies: [–] davidagain@lemmy.world 2 points 1 month ago* Just as well trains and other vehicles don't have roofs then. Fun fact: Unlike natural gas, which needs enough oxygen and enough gas to explode, hydrogen is explosive at almost any concentration of hydrogen and oxygen! Boom! Woohoo! permalink fedilink source parent
[–] frongt@lemmy.zip 2 points 1 month ago (2 children) Depends on how you define "win". It only takes one small hydrogen leak for a catastrophe. A train will wreck any car or truck for sure, hit or miss with another train, but even a simple derailment of tanker cars often results in a significant mess. There are nuclear rail transport containers that have been tested in collisions, and they've never leaked, but they're very big and heavy for not a whole lot of volume. And they're sealed, while a fuel tank needs holes to let fuel in and out. permalink fedilink source parent hideshow 2 child comments replies: [–] dgriffith@aussie.zone 2 points 1 month ago (1 child) Luckily hydrogen floats upwards pretty quickly. So paradoxically, storage tanks are safer the less protection they have around them. Or at least, above them. permalink fedilink source parent hideshow 1 child comment replies: [–] davidagain@lemmy.world 2 points 1 month ago* Just as well trains and other vehicles don't have roofs then. Fun fact: Unlike natural gas, which needs enough oxygen and enough gas to explode, hydrogen is explosive at almost any concentration of hydrogen and oxygen! Boom! Woohoo! permalink fedilink source parent
[–] dgriffith@aussie.zone 2 points 1 month ago (1 child) Luckily hydrogen floats upwards pretty quickly. So paradoxically, storage tanks are safer the less protection they have around them. Or at least, above them. permalink fedilink source parent hideshow 1 child comment replies: [–] davidagain@lemmy.world 2 points 1 month ago* Just as well trains and other vehicles don't have roofs then. Fun fact: Unlike natural gas, which needs enough oxygen and enough gas to explode, hydrogen is explosive at almost any concentration of hydrogen and oxygen! Boom! Woohoo! permalink fedilink source parent
[–] davidagain@lemmy.world 2 points 1 month ago* Just as well trains and other vehicles don't have roofs then. Fun fact: Unlike natural gas, which needs enough oxygen and enough gas to explode, hydrogen is explosive at almost any concentration of hydrogen and oxygen! Boom! Woohoo! permalink fedilink source parent
[–] phutatorius@lemmy.zip 2 points 1 month ago I suggest they name the train the Hindenburg. permalink fedilink source parent