[Stoves] Water heating with TLUDs

[ajheggie at gmail.com]

This message below from Ed in Wales contained a number of images which
are too large for [stoves]. The link to youtube shows the overall
layout of Ed's indoor water heater and though the audio is poor he
explains how it works.

I expect Erin will see if she can upload the images to the website.

AJH
> 
>Hi sorry I havn't been following all of this thread, but I thought
>this might be of interest to somebody,
>
> I
>am a market gardener, I produce a steady stream of biochar from my
>water heating systems. I live in Wales, it is cold and wet here and I
>like washing in hot water. 
>
> I
>have played with bringing tlud stoves indoors but it is not easy and
>so I have built water heating systems using what I call biochar
>rocket stoves (sorry if this brings back bad memories Crispin!)  
>Because
>they are not filled, lit and emptied from the top they can easily be
>left in place under heat exchangers, hot plates and a flue outlet
>pipe. Here in Wales this is important.
> If
>you run them in the evening, when you most need space heat and
>cooking, then after a couple of hours you have your biochar. It is
>fine to keep them burning for as long as you want (whereas there is a
>limit to how much you can keep topping up a tlud) 
>Unlike
>wood burning stoves, it is possible to have the flue outlet angled up
>about 30 degrees from horizontal and surrounded in a thermal mass to
>capture residual heat. Otherwise the 8th photo is of a section of
>flue outlet with integral thermal mass.
> Shut
>a door on the front and the biochar goes out overnight. My CO meter
>has yet to read 1ppm indoors. Empty the biochar by sliding out the
>floor of the stove and it drops straight into a metal bucket, no
>quenching, no dust and no mess.  
> The
>first photos are of these stoves connected to a 50 litre water tank +
>hotplate and oven for cooking. (The pipe in the second picture is to
>give secondary air to the flames.) The system in these photos is
>mobile and connected to a small header tank so that I can do demos at
>permaculture conventions and workshops.
> The
>youtube video link below is of something different; a double walled
>flue pipe with feed and empty hoppers for putting in biomass and
>emptying out biochar. A bit like an anila stove except the inner
>combustion pipe has no floor, it goes straight through to the stove
>below. If its ok with Crispin, I was thinking of calling this flue
>pipe an anila flue pipe.
> 
>http://youtu.be/MTiSTrdYuoA
> 
>Sorry
>Crispin, I do not have the time, money or inclination to test these
>systems to your required standards. They are capable of heating  over 200 litres on one 3 hour burn and catch residual heat in a thermal
>mass without any visible emissions.  
>
> Ed