[Stoves] Designs

[AJH]

On Fri, 4 Aug 2006 14:32:23 -0700, Tom Miles wrote:

>I don't know a shopping mall for heating stoves. 

Tom, Steve is looking for some plans for a DIY stove, something along
the lines of dimensioned drawings published under a general public
license for own use.
>
>This discussion list is devoted to cooking stoves for developing countries. 
>See http://bioenergylists.org/en/stoves

And as we have seen before there is scope for a lot of cross
fertilisation of ideas from first world industrial and camping burners
to be applied for the benefit of cooking in developing countries.

I know of Steve from another forum where we have a joint interest,
though we haven't met, I know he is a talented engineer with good
electronic knowledge.

Steve, in principle there's not a lot more to a radiant heater than a
cook pot stove, just replace the cookpot with a radiant flue pipe that
will discharge the flue products out of harm's way. It has often been
pointed out in the past that the flue gas from a wood burner is so
acrid inhaling it is unlikely to go unnoticed. Make that woodburner
visually clean burning and smell free and there can be a hidden danger
of CO poisoning.

From my experience of wood burning in UK I'd say that you need more
sophisticated design to allow for the fact that the available wood is
often going to be far from dry. This will dictate how the fire can be
lit and cleanly sustained. It makes a Top lit Updraught stove
impractical without fan assistance. Top lighting seems to be the
quickest method to achieve clean burning from start up but this leads
to problems with re stoking, so duration of burn needs thinking about.

AJH