[Stoves] Applications of TLUD heat - not for cooking and biochar and terra pretta

[ajheggie at gmail.com]

[Default] On Mon, 15 Apr 2013 22:27:06 +1200,"mtrevor"
<mtrevor at ntamar.net> wrote:

>Dear All
>
>I have been lurking in the background but following all with the greatest of 
>intereset.
>Here in the Marshall Islands one of my longest desires is a better copra 
>drier fueled by biomass
>and producing biochar as a by-product. 

Michael

I'm sure I have posted this before but in 1983 NRI in UK and Srilanka
developed a kiln for carbonising coconut shells and piping the hot
gases to a copra dryer. The prototype was commissioned at
Mahandragahamula. About 3 years ago I met one of the engineers on the
project but don't know how it fared. The overall heat efficiency of
the waste heat recovery was judged to be 84% but I don't know how the
desiccator worked nor how efficient it was. The coconut was dried from
45% mc wwb to 2% mc wwb.

AJH