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Need at Least 500% Faraday's

On March 26, 2008, New Energy Congress member, Mark Dansie wrote:

To run an engine with some usable power, you would need at least 500% Faradays..most likely 800%. The other way to approch this is to use a more efficient engine. IE the free piston engine running on Hydrogen has achieved 50% as compared with 30 to 40% for most engines. You will need around 5 to 7 litres per minute per HP of hydrogen to run an engine. There is concensus that this figure could be lowered to less than half that depending on the type of hydrogen being produced. Most of the experimentors I have talked to, or you can see on YouTube, confirm these figures. You may idle a 2 litre engine on a small ammount of hydroxy..but it might only be consumming 5 hp to do so. Some people think a 2 litre engine with 150 hp idleing is producing max power, when indeed it isn't.

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On March 27, 2008, dieoffree wrote (http://tech.groups.yahoo.com/group/Hydroxy/message/12469):

I'm not sure where you get 5 Lt/MinHp. I've heard you need around 4% mixture of hydrogen, possibly the same for H-H-O, in an engine. I you are working a 2Lt four stroke engine at 3000RPM, I would think you need around 2Lt/sec of hydrogen (or H-H-O)

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On March 27, 2008, stepen3ci wrote (http://tech.groups.yahoo.com/group/Hydroxy/message/12470):

Smaller engine around 1.3-5L u can idle on that low amount of H.H.O but it has to be H.H.O, not a week hydrogen which is mainly produced by these so called boosters running + and - from the top of electrolyser ...

Faraday

On March 27, 2008, New Energy Congress member, Nicholas Testad wrote:

These guys have been on my website for a while:

http://web.archive.org/web/20060618155012/www.stardrivedevice.com/electrolysis.html

The most important fact upon which our discussion will be based is that it takes 237.13 kJ (237,130 joules) per mole of electrical energy * to synthesize hydrogen by electrolysis of water, regardless of the applied voltage or the net efficiency of the cell. Not surprisingly, a fuel cell is essentially just the reverse of an electrolytic cell: whereas electricity is used to decompose water into its constituent gases in the electrolytic cell, in a fuel cell water and electricity are generated by the direct recombination of hydrogen and oxygen. For an excellent - if somewhat technical - description of these two processes, a visit to the http://hyperphysics.phy-astr.gsu.edu website is recommended.

* [It's important to realize that the environment at typical ambient temperature contributes thermal energy equal to 48.7 kJ per mole to the hydrogen electrolytic process, as shown in the material presented via the preceding link.]

My own calculation:

Electrolysis achieves 100% efficiency @ 0.06587 kWh/mol H₂ At approximately 82% efficiency, electrolyzing 1 kg H2 requires 40 kWh.

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On March 27, 2008, New Energy Congress member, Mark Dansie wrote:

If you work on 2.4 watts per litre per hour for hydroxy your near faradays. Most units are 3 watts plus per litre per hour.

Hydroxy = Boom Gas

On March 26, 2008, New Energy Congress member, Tai Robinson of http://www.IntergalacticHydrogen.com wrote:

The theoretical maximum efficiency to produce hydrogen from water using electrolysis would take 40kWh of electricity to make one kilo of hydrogen. Right now, the best electrolyzers available to us to make a home hydrogen filling station to fill tanks on vehilces, or provide pure hydrogen for heating, cooking, etc. are requiring about 60kWh of electricity to make one kilo of hydrogen.

Godd luck doing better than that.

Any engine running pure hydrogen is going to increase efficiency. There is a big mechanical efficiency increase and thermal efficiency has been documented at 49%. This is all with engines that were designed to run on gasoline. Optimizing an engine for hydrogen will produce even better results. Designing an engine specifically for hydrogen would be great, but Nicholas Otto already did that in the 1870's, it is called the Otto cycle 4-stroke internal combustion engine!

An engine idling on hydrogen barely uses any hydrogen at all. Hydrogen burns in such a wide range with oxygen that you can run it extremely lean if you do not need to produce power and you want the cleanest emissions. To maximize power you need to run rich, but this produces unacceptable levels of NOx and uses gobs and gobs of hydrogen for fuel.

The consumption of hydrogen fuel being burned by an engine depends on the fuel/air mixture you have and what you are trying to accomplish. You can use very little hydrogen and get clean emissions and very low power. Or you can use a LOT of hydrogen and get a lot of power and a lot of NOx.

The optimal mixture is just barely lean to get OK power and low NOx. Kepping that mixture is difficult, especially if you ar not metering the hydrogen into the engine, and almost imposible if you are producing HHO, hydroxy, browns gas, what ever you want to call it, but H2 and O2 in a perfect stochiometric mix is very dangerous and you will not get teh proper mix for the engine for best combustion.

So good luck all you "Boom" Gas makers. I know what does work and it is pure hydrogen in the proper mixture. And you are not going to get that just by chance when you are collecting hydrogen and oxygen from a single point from an electrolyzer. Be safe.

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