The burner design on the British Steam Car is one where the flame length is
very short - I am trying to recall a design talk from Glynne Bowsher some
years ago - at perhaps no more than an inch (25mm in Europe). The 'burner'
is more like a tile of intense flames rather than the long single flame of a
hot air balloon burner. Liquified Petroleum Gas (LPG) gives the opportunity
to create these short intense flames because of the velocity of combustion.
There are probably other ways to generate the steam needed but another
vehicle shape would arise in the design process. So if the record falls as
we expect after Speedweek, perhaps an American team will try to recapture it
using Propane as the fuel?
Malcolm UK .
On Fri, Jul 31, 2009 at 8:25 PM, John Burk <joyseydevil@comcast.net> wrote:
> If the British team is not using propane to heat their boiler tubes they
> might
> want to consider that design . A normal hot air balloon propane burner puts
> out at least 8,000,000 BTUs . If the flame preheated a thin wall inconel
> steam
> coil and the throttle pedal controlled the water flow into the boiler coil
> and
> the system was 25% efficient that's 780+ hp with little lag time .
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