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主题:【原创】敢说“不”,才是真科学家 -- 同人于野

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家园 看了你给的链接

更迷惑了。

Answerer 4

Hydrogen has about 3 times the energy of gasoline per weight. But the problem with it is that it must be cooled to near absolute zero or highly pressurized to remain a liquid. In a gaseous form, hydrogen is about 1/10 the density of gasoline, which gives it about 1/3 the energy of gasoline by volume.

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Not sure if you meant gas or gasoline, so I hit both bases.

如果上面回答正确,而且我们技术上能确保烧得是液氢(火箭里面应该做到了,所以才有前面一问),那么同样的汽车,烧液氢的应该比烧汽油走得更远。不是么?

当然,火箭之所以用氢氧燃料,还因为产生的只有水,分子量最少,这样exhaust velocity就最大。

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