Pet @
www.gymratz.co.uk ;¬) wrote:
wrote:
So dont put it on the house. It can be on a fence, freestanding, or on
an outbuilding. This is by far the best option if you have some space
to put such a system in. An insulated air duct to the house is not a
big barrier.
But my theoretically "better half" would be.
:¬)
And it still only works best both in the seasons and the time of day you
don't require heat (if you work away from home), and you can't store
warm air for use later.
:¬(
The basic system stores a lot of heat, and its not difficult to tweak
it so it stores a lot more. The fabric of the building, as long as its
brick or concrete, stores lots of heat. You then make it store more
heat by using a 'comfort zone.' This means that instead of a fixed
target temp you have a range, a comfort zone. In the afternoon you heat
it to the upper end of this zone to maximise the time until it drops to
the lower end of the zone.
Now if you put rubble in some of the collectors, and have 2 fans, one
for filled and one for empty collectors, you get one set with instant
heat output and another with storage. Note the storage temps are much
lower than electric storage heaters, so much more rubble is required.
The other way to do it is have an external heat store, fanning heated
air thru that when the fan supplying the house isnt on.
NT