On 24/05/2012 21:39, Rod Speed wrote:

And if you want something that really heats the water
properly to high temps, its better to have two separate
systems, one for the electricity and one for the water.

Thanks for input Rod
It all revolves around a proposed extension which will (if given the
go-ahead) give us a 15m long x 2.5m pitched roof with SW elevation.

Given that our house is heated just fine for both UFH and Rad. zones
with max. flow rate of 55 degrees C and we're sort sort of down south
(Bristol latitude) if I could get 55 degrees from such a system for 4
hours of the day in deep winter it _might_ prove to be of significant
benefit by offsetting boiler run/start time into the evening.

Perhaps a summer/winter diverter that could (pre)heat DHW in summer and
CH in winter...

Just found http://www.newformenergy.com/
and bounced them a few questions.

All depends on planning app. at the moment though... (and of course
price of such a hybrid solution)
8¬|

Cheers - Pete
--
http://www.GymRatZ.co.uk - Fitness+Gym Equipment.