In alt.autos.ford.focus Dave Gower <davegow-spamblock@magma.ca>:
> "Michael Heiming" <michael+USENET@www.heiming.de> wrote
>> On the downside it shows how ineffective a petrol engine works,
>> transforming most energy just to heat.;(
> Unless you live in the world's second coldest national capital, in which
> case heat can be nice, waste or not :<)
Sure a good/fast working heat system is great, but a fraction of
the engine heat would be sufficient to heat the passenger room
just fine.
Thermal coefficient of a petrol car engine is about 22-30% in
real live. The remaining say 70-78% energy are exhaust + coolant
+ radiation. A 2l wouldn't need >100kw possible heat through
coolant just to heat up the interior. 1/10-1/20 would be pretty
fine to keep it comfortable even in Siberia. Ever stood in front
of a 5kw construction heater? ;-)
--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
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