"John Stumbles" wrote in message
...
On Sat, 29 Dec 2007 14:50:18 +0000, Doctor Drivel wrote:

"John Stumbles" wrote
http://www.gas-news.co.uk/archive/st...mment/1006.htm

The Giannoni heat exchangers:
http://www.giannoni.fr/Prod-ABSOLUT-CONDENS.html

That's just a product brochu it doesn't answer the concerns and
criticisms raised in the GN article.

Look at the ACV Heatmaster and Atmos Multi. These are basically a boiler
with a very larger water capacity heat exchanger. Most would view it as a
thermal store. Many oil boilers have large water capacity heat exchangers
and use the integrated thermal store to improve combi performance.

Take the size of a normal boiler. Have a large capacity heat exchanger that
is squareish taking up all space inside the casing, maximizing the space
available, then this heat X/thermal store would improve combi performance no
end. Also used as a system boiler, cycling would be virtually eliminated.