heat storage one for the wood burners

question of heat storage for the wood burner .

situation is I put a wood burner in early this year and it’s in a small alcove
with approx 4 inches clearance around the sides and the walls get very hot
but while they are lined with heatproof board I was thinking if I put some iron or other metal
around the fire it would store the heat and release it when the fire went out.

the question is
aluminium is a good conductor of heat. so would heat up fast

would it be better to use some material that heated up slower to give the heat back slower
what would be the best material to line the cavity with to heat up and then slow release it

I was thinking cast iron bricks. if such a thig existed

Something with a high heat capacity and fairly low thermal conductivity. Rock for example.

Something that conducts slowly. I’d have thought something like stone/concrete as that is what is in storage heaters. There was a greenhouse storage heater on some TV show that used a pit full of broken glass.

Build a semi conductor thermocouple driven fan and force the heat round your room/house.

Controller for my heating still isnt plumbed in so the stove and ecofan are doing a sterling job of heating the house atm

Run a water coil in the flue, that runs to 1/2 radiators on the second floor. Try and reuse heat recovery from the flue

I can see where you are coming from trout, you would surely need to use something like the bricks from a storage heater or something.

Thinking from a different direction, could something like an eco fan help? my thought would be it would help distribute the heat round your house better heating the core of your house (walls and stuff) which would store the heat for you.

If you’re losing heat during the night, after the burner has done its job, try reducing the heat loss in these areas.
Bricks from storage heaters would do what you want.

I placed gritstone slab @4″ thick under and @1″ thick each side and back, with some insulation behind. It was ace, like a massive storage heater – still warm the next morning – and well worth doing.

Heat recovery form wood burner[/url]

Like the bricks from a storage heater idea
not wanting to heat other rooms as we both like the bedrooms to be cold

Decent thermal mass will do it.

There’s a new range of stoves I saw that make the most of that principal with cermaic cores.

But you could make a fan like I did, cost about £20 and it’s not great but was a fun exercise and probably works to a point, or go for a proper one, Eocfan http://www.ecofan.co.uk/