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|Zero-emission cars (07/06/16 21:32:06)||Reply|
|Re: Zero-emission cars (08/06/16 19:32:21)||Reply|
Besides, the carbon footprint of today's batteries is not neutral, and neither is the carbon footprint of hybrid cars with their dual drive systems and batteries.
But carbon neutrality cannot be obtained in one big move. It must be a multistep process with quite a number of false tracks and failures together with the multiple small successes. And there must be buyers of the early-generation technologies so that there is finance for further development. (6502-based computers were helpful in financing the subsequent steps, but nobody would dream of using a Commodore PET for serious work these days. I drafted articles on it. It put all text into one string, so a inserting text into a long paragraph was a slow and boring process. And then came CP/M 86/80 with WordStar.)
Whatever is said about economics: There is no doubt that the local pollution is less. Specially in 3rd world megacities that would be an advantage.
|Going renewable (09/06/16 19:28:00)||Reply|
Or maybe not.
So we need high-yield solar energy retention. So far industry has concentrated on photovoltaics. The problem is that peak sunshine and peak demand come at different times - so there must be storage.
But you cannot run a passenger aircraft on batteries. You need a liquid carbon-based fuel with higher energy density than methanol or ethanol. You need a hydrocarbon. So we need factories that can convert CO2 photochemically into hydrocarbon fuels. Jet fuel, rocket fuel: give me pinene.
So far we have only biological material as feedstock for the process.
We need the bacteria to be able to use photochemically generated methanol or formic acid as raw material.
Still a long way to go. But if I ever go for home-made drones, I'll fuel my turbines with biotech pinene dimer.
|Re: Going renewable (14/06/16 17:43:59)||Reply|
Fusion energy? The Register had an article today about alleged news - 100 MW from the size of a jet engine. Hah - who can handle 100 MW for energy purposes from such a small volume? And how about the materials surrounding the hot core - how long will they stay intact with intensive neutron irradiation?
Solar energy can be tapped today. But we need far more sophisticated systems.
|Re: Re: Zero-emission cars (15/06/16 19:07:55)||Reply|
no wonder everyone is trying to decrease the first... and then make more, quicker-breaking cars.
macchiaveli principles, applied..
|Re: Re: Re: Zero-emission cars (15/06/16 19:36:59)||Reply|
I believe composites, when the technology is more mature, might decrease significantly the carbon footprint of car production.
|The beginning is organic polymers (18/06/16 21:14:52)||Reply|
|The basics of plastics (19/06/16 08:03:08)||Reply|
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