so I've got this vapouriser, which has to be heated to stop it freezing, and
it's in a parallel water circuit with the car's heater, connected to the
source of heat, viz. the engine. If I put a valve in to interrupt one of
the pipes from the engine, I should be able to get the cold to go into the
heater element in the heater, there to exchange it with warmth from the
atmosphere, making the air coming into the car cooler while at the same time
supplying heat to the vapouriser. I guess it'll probably want a circulating
pump to get the water to flow around the smaller circuit of heater element
and vapouriser.

The valve, of course, will be remotely operated, and can then be used to
adjust the temperature. Provided the vapouriser is maintained above
freezing point, I don't see it needs to be as hot as it normally runs.

so much for the theory.

Has anyone done it? does the vapouriser make enough coldness to be worth
the effort?

I tried putting a valve on the outlet from the engine this evening, but I
suspect it's faulty and doesn't shut properly, it's a very old one, and the
vapouriser still got hot, implying that water was still circulating.

The system of using a single valve to shut off the heater used to allow of
unheated air, on vehicles so fitted, so it ought to work to isolate the
vapouriser/heater combo, and also allow of regulating the heat in the cabin
and the vapouriser, by allowing more or less hot water around from the
engine.

any thoughts?
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
In Touch: Get in touch with yourself by touching yourself.
If somebody is watching, stop touching yourself.
from the Little Book of Complete B***ocks by Alistair Beaton.