On 12/08/16 11:28, John Rumm wrote:
On 12/08/2016 08:51, dennis@home wrote:
On 11/08/2016 23:02, John Rumm wrote:
On 11/08/2016 17:58, Capitol wrote:

Read a Telegraph article today on these. Do they have a
future?

Nice in that they have a long life and should not lose capacity over
time. However the normal problem of energy density still exists - many
offer less than 1MJ per litre (compared to 43MJ/l for petrol)


I don't think they are intended to replace petrol.

Not suggesting they were, just illustrating that the energy density is
pretty low in relative terms.


Only technology that CAN theoretically equal a tank of diesel weight
for weight is lithium air. But its fraught with practical issues. At
least a decade away I would guess.






--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly