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Surur t1_j54gofa wrote

Reply to comment by esprit-de-lescalier in The race to make diesel engines run on hydrogen by FDuquesne

For these massive machines, dont they often use overhead pantographs?

You would need a much smaller battery to go from line to line.

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MidnightAdventurer t1_j54h65c wrote

That's one I haven't seen before... Makes sense for relatively fixed routes though, provided there is a large enough reliable electricity supply available

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momolamomo t1_j54ibm2 wrote

The power-plant that power electricity through those pantographs run off coal.

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Surur t1_j54po33 wrote

> Rio Tinto has officially opened a technologically advanced mine in Western Australia. The Gudai-Darri iron ore mine features a 34 MW solar farm capable of meeting one-third of the facility's energy needs.22 Jun 2022

> Together with a new lithium-ion battery energy storage system in Tom Price, the solar plant is estimated to reduce annual carbon dioxide emissions by about 90,000 t compared with conventional gas powered generation, equivalent to taking about 28,000 cars off the road.

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DonQuixBalls t1_j54ihpb wrote

Most commercial hydrogen is also fossil fuel.

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momolamomo t1_j54kuh9 wrote

When you burn hydrogen, which is a fossil fuel, what does it spit out?

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DonQuixBalls t1_j54lapb wrote

The byproduct of steam reformed hydrogen production is C02. You get about the exact same amount by volume consumed, you just produce the carbon exhaust at a different location.

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Surur t1_j54rvfg wrote

> When you burn hydrogen, which is a fossil fuel, what does it spit out?

NOx

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mschuster91 t1_j55o5lz wrote

While true in itself, there still is a difference: a modern coal or other fossil fuel plant will emit basically only CO2. In contrast, cars or trucks - even with the very best the industry has to offer - simply lack the space to run more than a soot trap and a catalytic converter.

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