Morgan,

On Wed, 7 Apr 2004 01:27:53 +0200, Morgan Olsson wrote:

(I know, I'm well behind in replying!)

> Still it is impossible to reach over 90% as long as they do not condensate the water that is a byproduct in
combustion; almost no heater do that, so almost everybody pretend it do not exist... :/

Actually in Britain "Condensing Boilers" are very common these days.  They cool the exhaust gas enough to
condense the water vapour and extract the heat from it.  Quoted effiencies are up to about 96%.  The exhaust
gas is so cool that they use plastic flues, and you can safely put your hand in the exhaust stream.

And these are domestic, house-heating  units, not industrial stuff!

Cheers,

Howard Winter

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics