On 28/04/2015 18:41, GB wrote:
On 28/04/2015 17:31, Tim w wrote:

I don't know if it's mentioned in that article but elsewhere it is
stated as 70%

Production is not underway, it's an experimental process producing only
on a small scale so you won't get an answer to that.

Even if it's 100% efficient, it only makes sense in certain specific
ways. The process takes electrical energy, that can be used direct for
traction and turns it into chemical energy that needs to be burnt to
extract the energy again. That burning is far from efficient, as even
the most efficient engine will produce much waste heat. (It needs to, so
as to obey the laws of thermodynamics.)

The main attraction is the energy density of a hydrocarbon fuel over any
available battery technology. The best efforts of 500kg+ of batteries
can be reduced to a few litres of fuel.



--
Cheers,

John.

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