[Stoves] Solar energy for the non-cooking part of household energy

Tony Vovers vovers1 at gmail.com
Thu Sep 20 11:52:50 CDT 2018


Andrew , this is a great simple idea well documented. I've struggled with
drying stuff so many times.
I am thinking to use this type of thing as final step in humanure process
also to take away the scare of pathogens.
Just wanted to say - thanks for posting.

On Thu, Sep 20, 2018, 16:06 Andrew Heggie <aj.heggie at gmail.com> wrote:

> Please find below post from rom Dale Andreatta I have had to strip the
> attachment  as it was too large but will see if it can be shrunk
> sufficiently to send to the list. Andrew :
>
>
> In the developing world much of the household energy goes for cooking,
> as we all know, but there are significant energy needs at lower
> temperatures for which solar energy can be easily applied.  I’ve done
> some work this summer to see how a very simple solar collector can be
> used to:
>
>
>
> Heat water for washing or bathing
>
> Dry grain
>
> Dry firewood
>
> Preheat water to be used for cooking
>
> Pasteurize drinking water
>
> Heat water for space heating (8 20-liter buckets can provide
> significant space heating if they are used properly)
>
>
>
> The idea is that if people are currently using fuel to do any of these
> tasks and can reduce that fuel use by using solar instead, that’s the
> same as having a fuel efficient stove.  It is believed that about a
> billion people currently boil their drinking water with fuel, on many
> days they can use the sun to pasteurize it instead.
>
>
>
> The device is basically a tent with a clear plastic top and a black
> plastic floor, into which you put things to be heated or dried.   It
> can perform several of the above functions at once, and the user would
> decide which functions to use.
>
>
>
> The wood drying application may be of special interest to stovers.  I
> dried a piece of large wood, green off the tree, to about 18% moisture
> in 3 days, much easier to burn.  The dry wood also releases more
> energy as it burns since it’s not using its own energy to boil off its
> own water.
>
>
>
> You can see the device in the short youtube video at:
>
>
>
> https://youtu.be/PlXmttxNeEs   (where the thing between the P and the
> X is a lower case ell)
>
>
>
> and the attached document has lots of technical details.
>
>
>
> Dale Andreatta, Ph.D., P.E.
>
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