7/17: Hydrogen BMW

BMW got a lot of press the other day when it introduced its hydrogen vehicle. Based on their 700-series. But what I didn't see on the national news was this nifty see-through hood. Damn nifty! I want one!

Re: 7/17: Hydrogen BMW

H2 is not so dangerous

Pressurized hydrogen is flammable, but not nearly so dangerous as gasoline. Worst you'll get is a hydrogen flare if there's a leak in the pressurized part of the system and it ignites. Otherwise the fuel simply escapes into the atmosphere. No fuel spattered all over the place.

ISTR that most of the deaths in the Hindenburg were from the crash, not the fire itself.

But I still don't see the big advantage to H2. It's just a fossil fuel, one step removed -- it's most often made by stripping the hydrogen from natural gas (producing CO2). (electrolysis of water is too energy intensive to be practical, and besides, it becomes fossil fuel TWO steps removed). And burning it in air produces not pure H2O, but H2O + NOx, so you haven't eliminated your mobile pollution problem either.

H2 production

H2O + C -> CO + H2

This is the 'water gas' reaction. IIRC the British gasworks used this process for municipal gas utility. In this reaction the water is supplied as steam; it is passed over red-hot coal. The reaction keeps the coal hot, so it can be sustained for a long time.

It is true you wind up with the amount of CO2 that the carbon you start with produces.

But a H2 powered car doesn't seem to offer many more advantages than that k3w1 clear hood. And - BMW, it's been done, there is nothing original about it. (Am I the only one on the board old enough to remember what kind of car "Color Me Gone" was?)

Re: 7/17: Hydrogen BMW

In other news today, the Bavarian Motor Works has begun work with a new process known as "Photoshop" in order to place two clearly disparate images together for the sake of marketing.

The Hindenburg's Problem

The Hindenburg had the large problem of being coated in a highly flamible substance. After the explosion, its manufacturer quietly discontinued use of this substance in the construction of the Hindenburg's sister ship (whose name escapes me). The sister ship in question underwent a great many flights without incident.

The substance is very similar to Jet fuel...
That hood, wierd! how'd they blend metal and whatever seethough stuff they used liek that???

Re: H2 production