Dear Crispin,
Comments below.
Regards,
Rajan
Message: 3
Date: Thu, 19 Jul 2012 12:28:52 -0400
From: "Crispin Pemberton-Pigott" <[email protected]>
To: "'Discussion of biomass cooking stoves'"
<[email protected]>
Subject: Re: [Stoves] Servals natural draft wood stove
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
Nice work Rajan
I recognise a couple of parts from other devices in there. The black pot
rest looks like it comes from a paraffin stove and the round thing under
it
looks like.well sort of like a jelly mould made from stainless steel.
They are standard items from the market. Easy to replace if and when
required.
I am glad to hear you have put in a grate because excessive charcoal
production lowers efficiency. You should also get a cleaner burn in terms
of
emissions per kg of fuel put into the stove.
The grate greatly helps.
I am glad to see also the pot skirt making a seal at the bottom edge. This
adds to the draft. If you limit the air getting into the fuel hole (with a
drop-down plate) you can get an increase in the flame temperature by
limiting unneeded excess air. Have you tried it? When you add vertical
height it usually pays to limit the air entrance cross section.
The fuel-wood stand is height-adjustable. One of the purposes here is to
reduce/regulate the excess air - also encouraging air-flow at the bottom
of the stand. The opening at the "flame concentrator" ( just below the
vessel support ) is also tuned for 2 KW fire-power.
I have been toying with the idea of a drop plate also. But I am worried
whether the user will find it convenient.
The pot-skirt is height adjustable ( 20 mm to 90 mm ) for various cooking
appliances. Ten different heights are possible - 5 in one direction and
another 5 by reversing the pot-skirt.
The stove boils 3 kgs water in 18 minutes using around 200 grams of firewood
( ambient temperature around 33 C ).
Of course everyone will like the BA surface material!
How much does it weigh?
The dry weight of the stove is around 7 kgs.
How much does it cost, say per 100?
This of course, Servals has to say. I feel pricing is moderate.
Regards
Crispin
+++++++
Dear All,
Servals wood stove is shown at the following link.
This is a low-smoke stove with a rated fire-power of 2 KW.
http://servalsgroup.blogspot.in/2012/01/servals-modified-natural-draft-wood.
html
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://www.bioenergylists.org/
