[Stoves] Three (?) Stoves from Rockworks

[Richard Pocock]

Dear friends of Rocketworks,

Herewith some details as requested


Rocketworks Stove

Latest stove, this stove evolved out of a classic rocket stove.

High temperature resistant stainless steel.

Long lasting due to precise, engineered airflow vortices.

100mm round tube. Height of stove 265mm, diameter of stove 245mm.
Insulation air behind a sleeve.

Primary air is from under the grate, secondary air from the entrance with
the fuel wood.

Tertiary air, pre-heated from vents in chimney

Water boils in 15 minutes or better for 5 litres

Awesome power for a small tube and very clean no smoke hot enough to need
little attention, even while adding new wood (damp ).

Emissions are similar to the better fan powered gasifiers.

After a few hours of use the stove can be picked up by the cage while stove
is still burning.

Turned upside down it makes a very comfortable stool and protects against
rain.

In the pipeline a new stove top stainless with holes for no 2 & 3 cast iron
pot legs. Depends on a large order so tooling costs can be absorbed.

Also including insert,  various fuels successfully tested, from jatropha
cow dung chip, saw dust grass etc.


Have a great day Richard Pocock

On Wed, Feb 20, 2013 at 2:43 AM, <rongretlarson at comcast.net> wrote:

> Crispin and list   (maybe) adding Richard Pocock)
>
> A nice site for this stove is www.rocketworks.org/   (same as Crispin
> gave last year and below)
>
> Few questions below
> ------------------------------
> *From: *"Crispin Pemberton-Pigott" <crispinpigott at gmail.com>
> *To: *"Stoves" <stoves at lists.bioenergylists.org>
> *Sent: *Tuesday, February 19, 2013 3:47:12 PM
> *Subject: *Re: [Stoves] Three (?) Stoves from Rockworks
>
> Dear Friends
>
>
>
> An update on at least one version of the stove referred to below. This
> stove is from a company called Rocket Works though from a technical
> perspective it is not a classic Rocket stove by several measures. You can
> draw your own opinion of course.
>
>     *[RWL:  I'd like to hear your set of differences.   I wonder where
> this fits in the range described by Nordica at last ETHOS meeting in terms
> of dimension ratios.]*
>
>
>
> The picture attached was passed around in the public domain so it is OK to
> talk about it. It is interesting from a couple of perspectives. One is that
> it produces very little charcoal, meaning it burns the whole fuel. This is
> different from most Rocket stoves and in ones that have a similar layout
> but have a grate. Rocket stoves tend to produce charcoal which sits on the
> bottom of the stove under fuel.  I would say this produces about ¼ as much
> and maintains a high combustion efficiency.
>
>    *[RWL:  This is first time I have heard this about charcoal and
> Rockets.  Can some users describe the maximum amount they have ever
> retrieved?]*
>
>
>
> The PM emitted on high power (using ≈12% moisture fuel) is similar to that
> of high end fan stoves like the Oorja burning pellets and the Philip Stove
> burning chopped wood, territory thought by some to be reserved for stoves
> with blowers. I am not saying such performance from a side-feeder was
> unexpected, but it is unexpected that it would be so soon. Clearly they
> have been playing around with it a lot.  The high power PM level would
> place it at the upper end of Tier 3, right at the edge of Tier 4.
>
>    *[RWL:  How can I find the full set of data you are reporting here?*
>
> **
>
> It has some measure of preheating of the primary air and definitely
> preheated secondary air with a side-feed of stick fuel. From the look of
> the structure it will not be hot to the touch (most of it) and the cost
> (and mass) is obviously low. Two of its technical advances are evident in
> the photos on their website.
>
> *   [RWL:  This is the first time I have heard of a rocket having
> separate primary and secondary air supplies.  Can you or Richard describe
> these features some more.  Agreed on the nice feature of the wire mesh.
> Cost?*
>
>
>
> One of the principles is the South African Richard Pocock who we know from
> solar cooker days. That name may ring a bell with a few of you. Perhaps he
> will provide some technical and performance details.
>
>    *[RWL:  I also hope so.]*
>
>
>
> Regards
>
> Crispin
>
>
>
>
>
>
>
> Date: Tue, 11 Dec 2012 22:06:43 +0800
> Subject: [Stoves] Three (?) Stoves from Rockworks
>
> Dear Friends of Rocketry
>
> There are some all-metal Rocket stoves at http://www.rocketworks.org/ featuring
> a new wrinkle on the under-air pathway.  They are made in South Africa.
> They have a gel fuel insert that makes it a dual fuel stove.
>
>  Performance of both not yet known.
>
>  Regards
>
> Crispin
>
>
>
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