ROHS directive and electric vehicles?

In message , CWatters writes

Sodium Nickel Chloride is pretty good, within some practical limitations

- see

Cheers

anyway.

Thanks for that. I had a look at some of the paper on their web site. The self discharge, through heat loss, might be an issue (I'm not sure) but otherwise they look quite interesting.

In message , CWatters writes

It takes about 80W to maintain an idle battery pack at operating temperature and takes about a day to heat up a pack from cold, so applications are often urban busses or similar where there is regular daily use and where local pollution is an issue.

Cheers

I've been building high power electric RC model planes (1500W) for many years and have a background in Electronics.... An electric powered car would seem like an interesting project to do. Perhaps when I finish building my house!.

Meanwhile I've been scanning the web for articles and other peoples projects in my spare time.... It seems like it's quite easy to get say 30-40 mile range but quite hard to get more than 100. Suitable (well reasonably suitable) cells seem to exist but it's not clear if they are available on the open market. Every builder seems to have to work hard to persuade the manufacturer to part with them.

I've read about one solution that uses hollow nanospheres, filled with hydrogen. The resulting bulk flows like a liquid, is easily stored and the spheres release thier hydrogen is released under heat.

Mark

There's an even higher-density, easier-to-release way to store hydrogen: bond it to carbon atoms.

John

Speaking of crazy, what happens when you short the outputs (as in a vehicle crash) or hit them with too high a charge voltage? Do they need to be surrounded with a composite crash cage?

Oh so true. Well tried and tested.

The economics of the widely toutde 'hydrogen economy' are simply berserk. Never mind the negative impact it would have on pollution and energy efficiency.

Graham

Yeah. It's so obviously bogus, yet very important and otherwise apparently sane people are pushing "the hydrogen economy."

John

Never

Anyone with any common sense who bothers to look at the numbers knows it's a bag of s**te. Only almost unlimited quantities of ultra-cheap nuclear or hydro power would make it even remotely feasible.

I can barely believe how ppl fall for it. Hoping for simple answers from fairy-tale land I suppose ?

Graham

YES!

My buddy just scored a palletteload of motors at an auction! the ONE thing I couldn't find to do a converstion was a motor!

he has some around 10-20HP, 3 phase, high voltage, which is almost exactly what I was looking for ( I wanted 400Hz idealy)

now I just have to grab a VFD off ebay and I'm good to go

dan

New Scientist this past week has an article about making hydrogen from water "as you go" using Boron. If I remember correctly 45Kg of water and 18kg of Boron makes 5kg of Hydrogen... which has the same energy as about 40L tank of gas. The important bit is that the total weight of 63kg (45+18) is lighter than that of a 5kg cylinder of hydrogen. This is because you need a strong cylinder to store hydrogen gas under pressure. The Boron oxide produced in the reaction can be recycled and reused.

The greenies think it comes from mules.

Poor man's (weenie state) fireworks.

In message , dated Tue, 1 Aug 2006, Rich Grise writes

Chernobyl; they dumped tons and tons of it on the reactor. Might be a bit difficult to recover it, of course.

It contained a borate, B(OR)3. I don't know why.

--- G. R. L. Cowan, former hydrogen fan "Boron: A Better Energy Carrier than Hydrogen?"

In message , dated Wed, 2 Aug 2006, snipped-for-privacy@eagle.ca writes

I think that may be a little confusing.

Fabric softener? (;-)

-- OOO - Own Opinions Only. Try

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

B is Boron, O is Oxygen...What is R?

In message , dated Wed, 2 Aug 2006, Richard Henry writes

Any univalent base. I said it was confusing. It's a sophisticated way of formulating the generic orthoborate, a salt of orthoboric acid H3BO3.