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Old 07-23-2017, 02:31 PM   #30 (permalink)
seifrob
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Join Date: May 2011
Location: Czechoslovakia (sort of), Europe
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Dáčenka - '10 Dacia / Renault Logan MCV 1.5 dCi (X90 k9k)
90 day: 47.08 mpg (US)
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Have you seen this video HaroldinCR found for you? (permalink) This one:


I will not discuss it it is fake or not, let's take it as canon.
- Now, when you know that it can be done (leave aside that we do not see the car in action). From the youtube video we can figure:
- whole boot of that corvette is filled with hydrogen tanks
- he used gasoline engine, not diesel
- the tanks give around 400 miles range (as he claims)
- to fill these tanks it takes industry-grade electrolyser overnight, and the process cannot be sped up significantly
- you need a hydride (Lithium-6 deuteride) to store hydrogen in safely under pressure around 7 bar (pressure in waterline)
- it is neither easy, nor cheap (and surely not "for free")

Now it depends what do you want to do.
- Personally use eco friendly car? Than sell yours and buy (second hand) electric car. You use electricity anyway and conversion rate in electromobiles is way better

- build yourself eco friendly car? Do an EV conversion, there are plenty of examples here on Ecomodder, even Top Gear guys made one ;-), (see here) and .

- build yourself hydrogen powered car, just for sake of doing it?, OK, but be prepared it takes much higher skills in theory of combustion and motor engineering, and do not try to reinvent wheel. If I would be in your boots, I would firstly search every successful attempt in literature (printed, as there is less chance to let print false positives. See your local university library). As getting hydride is out of question for backyard engineer, CNG conversion kits would be a good start, study them, see how they do it and why (no one here discussed preheating gas after expansion, for instance). But do not expect to come with easy, safe and cheap solution. There is none. As I already told you, cheapest LPG conversion kit costs around € 800 in my country, CNG conversion kits around € 1400 and they will be more similar to your case due pressures used. So that is your base price. And remember that CNG tanks do not suffer hydrogene embrittlement you need to overcome. I could continue, but I do not see a reason why.

You can make it done, but seems to be extremly difficult, close to impossible, and nowadays, with current state of the technology it simply is not practical to do it. Electromobiles seem to be much better alternative.

- was this enough data for you?
here you acused me to make idle comments. Sometimes it takes more complicated calculation that working with fractions, trust me. My time is too valuable to type all equations on my smartphone. Where I do back-of-the-envelope calculation, I announce it. Where i cite other sources, I announce it. We collectively provided evidence of others people work and these also did the actual number crunching. You came for answers, we provided them. But, do you really listen to what we provided? Than, how can you be so stubborn?
- did you just google HHO powered car before you entered this forum ? Isn't it weird that serious links (BBC, CNN, popular mechanics etc.) only list topics that it cannot be done? yeah, there is world-wide conspiracy for sure.

I am not going to visit this thread again.
howgh

Last edited by seifrob; 07-23-2017 at 03:11 PM..
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