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Janus
13th February 2006, 23:32
Source: BBC News

Driving the car of the future
By Jonathan Head
BBC News, Yakushima island, Japan


The blue sky seemed to vanish in an instant, as wild, grey thunderclouds raced across the mountains. Rays of sunlight broke through in places, brightening spots in the forest like searchlights.


Yakushima: A World Heritage site

There are few landscapes more dramatic than Yakushima, and few places with more weather; within seconds we were being pelted by our 12th rainstorm of the day. But none of this bothered Sachito Fujimoto, one of Honda's top engineers.


"It's the perfect climate for us," he said with a grin, and we climbed into the dumpy little blue car he was testing.

The Honda FCX isn't much to look at, but it's the closest thing to a genuine car of the future you can drive on public roads.

Amid ancient forests

Underneath the bonnet - and under the passenger seats as well - is a revolutionary fuel-cell engine that produces no pollution and, in effect, runs on nothing more than the enormous amounts of rain that fall on Yakushima.

Which is why Honda has chosen to test it on this remote southern island - a Unesco World Heritage Site better known for its sheer mountains and ancient forests.


Honda engineers road-test the FCX on Yakushima


Fuel cells don't run literally on water, but on hydrogen, which is forced through membranes inside the fuel-cell stack, producing an electric current that powers the car. You can make hydrogen from water, but that also requires electricity - and it so happens Yakushima has abundant quantities of that, too.

The reason lies 170 metres (yards) down a steep tunnel, which takes you deep under the mountains, on a funicular railway.

That is where the local electricity company has built turbines to harness the enormous hydro-electric potential on Yakushima - and it has done that so successfully that it produces far more electricity than the island's 15,000 inhabitants can use.

Hiroshi Ishii, the president of the electricity company, has grander dreams, of an island entirely powered by renewable energy


Surplus electricity cannot be stored, so the company has joined forces with Kagoshima University and Honda, to make hydrogen for the fuel-cell FCX.


So some of Honda's top engineers have to spend several weeks a year on the island, running the FCX along its twisty mountain roads, and putting up with the endless rain.

"Actually it's a very good testing ground," says Mr Fujimoto, "we want to show that our car can perform well in all kinds of extreme weather conditions".

Impressive

It doesn't hurt the car-maker's image, either, that it is associated with one of the most pristine natural environments left in Japan.


Yakushima is making use of huge hydro-electric potential

Hiroshi Ishii, the president of the electricity company, has grander dreams, of an island entirely powered by renewable energy.

He pulls out a colourful leaflet showing how the hydrogen could fuel all the cars, buses and boats on the island. It could even, he thinks, be shipped to a neighbouring island where Japan's space programme is based, to power its rockets.

For the moment, though, this is just a dream; his main customer is still Honda.

The people of Yakushima have now got used to seeing the little blue car swishing silently around their island.

It is an impressive machine, with surprisingly good acceleration for a car that runs on water.

The technology is still too expensive for mass-production, but Honda has loaned other prototypes to city governments and individuals in the United States, in the hope that one day, they may be the first to produce a truly affordable fuel-cell car.

And the islanders, who are very proud of their World Heritage status, say playing host to such a clean-living car, seems quite appropriate for Yakushima.

So what are your thoughts on hydrogen power? Thoughts on any other alternative solutions to the oil problem?

MysticArcher
13th February 2006, 23:52
definately a good option, especially if/when the fusion reactors in China and France come on line, they'd already be cracking water into hydrogen to fuel the reactor so a bit more to fuel vehicles wouldn't be that hard

ComradeRed
14th February 2006, 00:00
I've read that cold fusion has occurred artificially at UCLA :o :o :o

The problem is that the energy that was released by the reaction was not an incredible amount...although there was a significant amount of x-rays emitted. Perhaps we could turn that into energy some how?

Another alternative is nanotechnology. With it, solar cells (currently around 10% effecient) could reach levels of 99%! Amazing.

MysticArcher
14th February 2006, 00:29
Another alternative is nanotechnology. With it, solar cells (currently around 10% effecient) could reach levels of 99%! Amazing.

I don't see how that'd work. The best I think you'd be able to get is some sort of imitation photosynthesis reaction coupled with a fuel cell to turn the carbohydrates generated into energy and carbon dioxide

Because that high efficiency means you'd absorb all wavelengths equally and be able to turn all of them into electricity with only a small loss to entropy

Ol' Dirty
14th February 2006, 00:42
It's a myth. It takes more energy to get hydrogen than the amount of energy in the hydrogen itself.

which doctor
14th February 2006, 01:07
I believe alternative energy sources will really begin ot develop within the next 10-15 years.

Here is a little something that I did a while ago whilst I was bored.

Alternative Energy Sources

Geothermal Energy: Geothermal energy is thr process of capturing energy from the earth. It currently produces 8500 megawatts of electricity worldwide. It also produces about 17% of the power for Iceland. The problem I see with it is that there are few places it can be efficiently utilized.

Wave Power: Waves are always occuring. It is only natural that we harness this energy. It is currently only in experimental stages, but I see it as quite promising. It also a low impact on the enviornment, less than hydroelectricty or tidal power.

Nuclear Energy: Nuclear is a safe and clean energy source. It has already been pioneered to be used efficiently. The only problem is that it can be quite dangerous (see Chernobyl, Mayak and 3 Mile Island).

Wind Power: There are two problems I have with this type on energy. One is the fact that the wind does not always blow, so a constant energy flow is not always available. I live near a large wind farm so I know well about this other problem of birds. Many birds are migratory, most notably in my area is th Canada Goose. When a flock of these flys through a wind farm the results can be disasterous.

Solar Energy: Clean and renewable. However it has a problem that many other renewable energy sources have. The sun is not always shining. These solar farms can also get quite large and can have an impact on the environment.

MysticArcher
14th February 2006, 01:35
It takes more energy to get hydrogen than the amount of energy in the hydrogen itself.

it's called entropy - it always take more energy to make a system less chaotic than is released when the part you just made more ordered becomes chaotic again

entropy's not a myth last I checked

also, as we always point out to creationists, the earth' not a closed system, it's powered by the sun

solar ---> hydrogen ---> car engine

you lose some energy but you effectively putting the sun's energy in your engine

Floyce White
14th February 2006, 06:11
FluxOne13 is correct. There is no such thing as "hydrogen fuel" because hydrogen is created by using other fuels to make it. It is like saying "Duracell Battery fuel."

BuyOurEverything
14th February 2006, 16:15
it's called entropy - it always take more energy to make a system less chaotic than is released when the part you just made more ordered becomes chaotic again

entropy's not a myth last I checked

also, as we always point out to creationists, the earth' not a closed system, it's powered by the sun

solar ---> hydrogen ---> car engine

you lose some energy but you effectively putting the sun's energy in your engine


Well, yes you're correct, but you're missing the point. Hydrogen cells are merely a way of storing energy not an actual source of energy. So if we can develop efficient solar energy, it may be great (although it does have some other environment problems), but that would be the real breakthrough, not hydrogen cells. Until we come up with another source of energy, we'd still be burning fossil fuels to power our 'clean' hydrogen cells.

Ol' Dirty
15th February 2006, 00:01
It takes more energy to make hydrogen fuel than the amounbt of nergy in the fuel itslef. It's inneficient.