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| daemonoid |
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 daemonoid World Chat Champion

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| Rogerborg |
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 Rogerborg nimbA

Joined: 26 Oct 2010 Karma :    
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 Posted: 14:46 - 22 Oct 2012 Post subject: |
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This again? CO2 + H2O + energy... oops.
With cheap, plentiful energy, pretty much anything is possible. Where does our energy come from? Let's ask the Department of Energy and (Jesus wept) "Climate Change":
Coal: 293,444
Gas: 275,591
Nuclear: 181,732
"Renewables": 14,696
Wind: 12,675
Hydro: 7,500
Oil: 4,023
Figures are for 2011 in GWh. I make that 72.6% coming from fossil fuels, 23% from nuclear, with all ecomental scams taken together managing just a token 4.4%, and that's including "renewables" i.e. burning random junk.
So, burning hydrocarbons to make electricity to make hydrocarbons. Well, derp. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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| daemonoid |
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 daemonoid World Chat Champion

Joined: 27 Jun 2008 Karma :    
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 Posted: 15:30 - 22 Oct 2012 Post subject: |
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No no no, you've missed the point - these could have solar panels on top to produce half a litre of fuel per day!
Like the article said, it's not a new thing, but the stage 2 trial will be interesting.
If nothing else, it means us enthusiasts will be able to continue with our ICEs long after everyone else has switched to electric. ____________________ current: ducati monster 750
past: hyosung gt250r, bajaj pulsar 180, hyosung gt 125 comet
@thomasgarrard | www.straitjkt.com | www.racingseven.com |
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| Rogerborg |
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 Rogerborg nimbA

Joined: 26 Oct 2010 Karma :    
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 Posted: 16:00 - 22 Oct 2012 Post subject: |
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| daemonoid wrote: | No no no, you've missed the point |
I really haven't.
If you can convince me that real world solar (or wind, or tidal) can generate enough energy to cover their extraction, refining, manufacturing, installation and maintenance, including producing enough extra energy to sustain the humans who play a fairly important part in that process, then we can talk.
I have this vision of the remaining tribe of filthy, faux-fur clad humans huddled around a broken solar panel in a damp, freezing cave, grunting "Me no understand! Is green technology, would be ethical for it to make net energy!"
Then Charlton Heston shotguns them all to the face. END.
OK, I grant that if "renewables" can actually produce energy beyond that required to sustain them (and us) then it makes far more sense to stored that energy on site than to pump it into the grid. However, the "if" step there can't be skipped. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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| daemonoid |
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 daemonoid World Chat Champion

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| TheSmiler |
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 TheSmiler World Chat Champion

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| Spudly |
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 Spudly World Chat Champion

Joined: 04 Apr 2012 Karma :  
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 Posted: 20:32 - 22 Oct 2012 Post subject: |
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| daemonoid wrote: |
Yes you have... Perhaps my irony was too subtle for you...
| Quote: | half a litre of fuel per day |
And the little at the end of the first post. |
But surely....every little bit helps, doesn't it?
In one of the comments on that article, someone mentioned the idea of taking advantage of otherwise wasted energy to power something like that.
To me, that's the killer application of the next 20 years. Not so much making petrol from air, but energy scavenging. Locating places where energy is being wasted, then figuring out how to reclaim it and put it to use..
It needn't be done on an individually significant manner either. For example, this is a still experimental technique for generating electricity using the principles of piezoelectric transduction.
Granted, they say that at the time of writing, the electricity generated couldn't power a lightbulb, but they didn't mention storage. When you think about it, the average lightbulb doesn't get used all that much.
Change it out to a comfortable coloured LED and use a rechargeable battery of some form and Bob's the bloke who married your auntie.
Get 10% of lightbulbs changed over, that represents a significant saving.
Sounds all pixies and fairy dust, but I sincerely believe these things and other techniques like it really need to happen. ____________________ The Old Apprentice |
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| Vracktal |
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 Vracktal World Chat Champion

Joined: 04 Oct 2012 Karma :  
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 Posted: 00:06 - 23 Oct 2012 Post subject: |
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Heh, oh, look, it's this idea again.
Producing gasoline from air is an idea which has been suggested in various forms already, each time the same problem crops up; The laws of thermodynamics prevent it from producing more energy than you input in the first place, which means that any system based on our existing electrical supply infrastructure is an exercise in concept only.
To become truly viable it would need to be coupled with some form of high-capacity, renewable energy, either wind, solar, or as a best case scenario, perfected fusion technology (which is still some way off if it's even possible, and if it is then there are way more simple and feasible ways to synthesise hydrocarbons from our atmosphere using electricity which have already been suggested and proven to work, like the CR5 heat engine.)
So basically, we can't create a viable fuel synthesis model until we create a large-scale, viable renewable energy supply. |
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| Knightsy |
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 Knightsy World Chat Champion

Joined: 21 Jun 2012 Karma :   
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 Posted: 08:06 - 23 Oct 2012 Post subject: |
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Won't happen as long as oil companies are around  ____________________ 09' Versys 650 | 07' FJR1300A |
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| LordShaftesbu... |
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 LordShaftesbu... World Chat Champion

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| jjdugen |
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 jjdugen World Chat Champion

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 LordShaftesbu... World Chat Champion

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| Rogerborg |
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 Rogerborg nimbA

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| weasley |
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 weasley World Chat Champion

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 Posted: 10:02 - 23 Oct 2012 Post subject: |
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It's ok, because crude oil is not made of old fossils anyway, it's made of rocks. ____________________
Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE |
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| jjdugen |
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 jjdugen World Chat Champion

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| daemonoid |
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 daemonoid World Chat Champion

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 Posted: 13:43 - 23 Oct 2012 Post subject: |
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| jjdugen wrote: | Matter is energy, agreed, everything has 'energy' at the atomic level, its releasing that energy economically that is the rub.
A nuclear bomb does have the overhead of producing fissionable matirial, but as this requires a reactor that itself produces energy, the energy cost of producing fissionable matirial is offset to a very large extent.
It is the one argument I have made that seems to shut up even pretty learned proffessors. I know I have hit a sore spot when they start becoming dismissive and generally finish the conversation abruptly.
That is a 'machine' that we can produce here on Earth, the sun has been doing a pretty good job of being an almost endless, renewable energy source almost since time began. |
I don't think it shuts them up because you've proved them wrong, I think it makes them realise they're wasting their time trying to have a discussion with you.
Fortunately I'm not a professor...
None of what you've described produce more energy than is put in. They simply convert fuel (hydrogen) into big boom - that's the sun and H bombs. What you're saying is the equivalent of saying a bike engine is a perpetual motion machine because 'it doesn't take energy in, it only takes petrol'. ____________________ current: ducati monster 750
past: hyosung gt250r, bajaj pulsar 180, hyosung gt 125 comet
@thomasgarrard | www.straitjkt.com | www.racingseven.com |
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 LordShaftesbu... World Chat Champion

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 Rogerborg nimbA

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| daemonoid |
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 daemonoid World Chat Champion

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 jjdugen World Chat Champion

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| haroman666 |
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 haroman666 World Chat Champion

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| daemonoid |
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 daemonoid World Chat Champion

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 haroman666 World Chat Champion

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| Shielder |
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 Shielder Renault 5 Driver
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 Posted: 12:30 - 24 Oct 2012 Post subject: |
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| jjdugen wrote: | OK, I'll plead my ignorance....... Lets see, a few pounds of fisile matirial, a few more pounds of shaped charge semtex, enough energy released to devastate a city the size of Londaon. Seems like a muliplyer to me......
I DO realise that its a fairly specious argument, but it did get me thinking.
Every piece of matter has a resonant frequency. Hit it with a targeted burst and it will shatter, or even explode. The problem with extracting hydrogen from water is that, with present technology, vast amounts of electrical current is required. I have not seen any work on trying to find the resoant frequency of H2O to try actually 'vibrating' the the constituant parts untill the hydrogen element is released.
If an opera singers voice can shatter glass, I am of the mind that high frequencies might be the way forward for hydrogen on demand. |
Okay, I'll bite (and, hopefully, not get too technical)
You seem to have confused two different processes here. In the original post, you were talking about recombining the carbon, oxygen and hydrogen in the air to induce a chemical reaction that produces a hydrocarbon based fuel.
Unfortunately, this is a process that requires energy to be put in in order to recombine the atoms and molecules. It is the energy in the molecular bonds that is released when we burn these hydrocarbons. If you consider that we can only harness 30-40% of the energy in these bonds when we burn them, then you can see that the energy balance is not there.
In a nuclear reactor (fusion or fission) and a nuclear bomb, we are actually converting matter into energy in line with Einstein's famous matter energy equation. Now, the energy released when you convert matter into energy is many many orders of magnitude greater than when you burn something.
In your nuclear bomb analogy, the few pounds of fissile material (U-235 or Pu-239) that you compress (in a highly controlled manner) with the Semtex (actually a few different explosive componds, RDX is used as well as some others) is not all converted into energy. Only a very small percentage is converted, with the rest either not splitting, or becoming fission products (fallout if you will). I think they estimated that Little Boy only converted 0.6-0.8grammes of U-235 into energy.
In a nuclear reactor, the weight of the fuel rods does not measurably change as they convert U235 to energy.
Resonant frequencies (harmonics) are only relevant on the macroscopic scale (big, like you and me). It is really incredibly difficult and energy intensive to create a focussed beam of particles/energy (electrons, neutrons or electromagnetic radiation) that is powerful enough to break the chemical bonds between atoms in a molecule.
Hope that helps.
Andy ____________________ CBT - 22/10/08 & 30/5/11, Theory - 13/06/11, Mod 1 - 26/9/11, Mod 2 - 29/9/11
'00 Suzuki Intruder VL 125 (06/06/09 - now) |
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Old Thread Alert!
The last post was made 13 years, 165 days ago. Instead of replying here, would creating a new thread be more useful? |
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