woodburners and heat reclamation

[shillo]

I'm sure someone a while back was talking about sucking heat out of their hot room (room with wood burner in!) and blowing it through insulated pipes in the loft to the bedrooms.

 

Anybody got any ideas on that subject? are there companies that make specific kits for that type of application?

 

reason i ask is that we have a bungalow, lounge gets boiling, bedrooms gets freezing so we still have to have central heating on to warm the bedrooms.

 

seams crazy when i have a shed load of wood!

 

getting a bigger wood burner with back boiler and re plumbing the house I'm sure would be prohibitively expensive.

[Gillsgardening]

It's down to the stove some stoves have ducts where you can vent some of the heat direct from the stove to other rooms.

[cornish wood burner]

It would take a lot of air flow to move much heat. Too breezy in your lounge then I would think. Back boiler in your existing fire heating your hot water and a rad ?

Or go bigger but as you say more money.

[woodworm]

You need one of these

MCZ Musa air 10kW pellet stove

[treesrus]

allthough we have central heating to back up our woodburner, when i installed the radiators, i left our bedroom without one. the bedroom is directly above the living room and the heat from the woodburner is adequate to keep the chill out of the bedroom, to a pleasant degree. ceiling in lounge is plaster, but the bedroom has bare floor boards.

[rob.anna69]

We tapped into existing plumbing system adding a header tank,pump and pipe stat. Two rads still on combi to preserve heat exchanger it was the best move we ever made and relatively cheap.

[Fredward]

In N.Z heat transfer kits were quite popular in past times, I think they saw a dip in popularity as people moved away from wood stoves. 2 winters ago we installed a 14kv wood burner in our single story house, and as you mentioned, it was boiling hot in the lounge, and hard to control the temps. The following winter we installed a 'heat transfer' kit, consisting of a vent in the ceiling of the lounge, a fan suspended from rafters in the roof, and 3 insulated ducts to 3 bedroom vents. Has thermostat and automatic/manual speed controls. Made the world of difference, more even temps through the lounge and bedrooms. Also circulates dry air so reduces condensation.

 

This is the type of kit available in N.Z: http://www.heattrans.co.nz/how-it-works

 

There is some thought required for placement of vents and you will notice some noise off of the fan but nothing major.

 

I guess partly it comes down to size of stove and kW output, size of house.. Bunglows are perfect also.

[GreenGui]

Quite common in France, this type of kit can be bought in most of the 'sheds'.

 

Distribution d'air chaud / Magasin de Bricolage Brico Dépôt de CESSON-SEVIGNE

[cornish wood burner]

As a rough guide for you if you want to move 1 KW from a room at 30 deg C to another room at 10 deg C you will need to move almost 2.5 cubic Metres of air every minute.

 

As Gillsgardening said you need a wood burner designed to do this. Feed your system hot air then the flow drops to a sensible rate.

[GreenGui]

As a rough guide for you if you want to move 1 KW from a room at 30 deg C to another room at 10 deg C you will need to move almost 2.5 cubic Metres of air every minute.

 

As Gillsgardening said you need a wood burner designed to do this. Feed your system hot air then the flow drops to a sensible rate.

 

Makes sense. Guess thats why in the link I gave the system moves 350 m3 per hour