>The inefficiency of metal to air
>heat transfer is apparent to anyone who ever tried to get warm during winter
>in an automobile or airplane with an air cooled engine and an exhaust muff
>style heater. Brrrr.
Rob - maybe you've been unlucky, but my own experience of heaters in
air-cooled cars has been only positive. My Citroen GS and GSA both
had outstanding heater performance, and gave out hot air within a few
hundred yards of a cold (down to 0C) start. It was often as quick to
melt windscreen ice with the heater than to scrape it off. Perhaps
the higher temperatures attained by the exhaust pipes compensates for
the lower efficiency of transfer, or maybe you're talking about much
lower ambient temperatures than we experience in UK.
regards
Rowland
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| Rowland Carson PFA #16532 <http://home.clara.net/rowil/aviation/>
| 750 hours building Europa #435 G-ROWI e-mail <rowil@clara.net>
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