[Stoves] NGO is looking for a stove update in production process

Tue Jul 26 04:07:56 CDT 2016

Dear Ron,

please find my comments below in your mail.

Thanks and warmest regards
Deniz

Am 19.07.2016 um 20:35 schrieb Ronal W. Larson <rongretlarson at comcast.net<mailto:rongretlarson at comcast.net>>:

Deniz,  cc List and Patty

1.  Yours is a most wonderful organization.  Congratulations to the many of you in 8 countries - clearly providing a very valuable new service.

Thank you Ron, that honors us.

2.  I have read two responses on bio- stoves that will work.  I normally would agree that a TLUD (charcoal-making) stove would be a best alternative.  But please try to avoid using charcoal in most locations - where its remote, crude production is even (appropriately) apt to be illegal.
But all biomass stoves routinely operate at temperatures an order of magnitude larger than you desire.

We will definitely need to find out where our charcoal is coming from. But nethertheless the wood supply isn’t proper neither as there is no control.

3.  I suggest instead thinking of solar cookers.  See SCI at http://www.solarcookers.org/index.php.
A good friend and neighbor (cc'd) has been on the SCI board and she and her (excellent Engineer) husband would be pleased to communicate on best (least cost) solar cooker designs.  Reaching 120 C is trivial.  Solar sizes could be provided from heat-shrinking one at a time up to thousands.

Thanks for the hint, solar cookers are interesting. But we do have a lot of cloudy days and in the solar cookers wiki it says that "the fuel" for these types of cookers is sun.

4.  It was not clear from your website whether you desired to have this heat shrinking occur at central factory locations or at the point of sale.  Or differently stated, why did you mention 10 minutes?   It could be that electrical heating is even a good choice - assuming the kWh for one pair is as low/cheap as I guess - using remote PV.   This, with modest battery storage, could even allow final heat-shrinking at night - and probably an application for 1 minute - not ten.

We are not thinking of implementing something electrial in our system as this system is to complex. We want to keep it simple. Easy to repair and to replace.

5.  I (and many on this list) have continuing possible non-stove contacts in a number of countries beyond your present eight.  Solar cookers are now being used everywhere.   How are you selecting countries into which you will expand?

Thanks Ron for the hint. In contrast to our production process our selection process is very complex as it is important to decided where to put all the energy first and being able to grow.

Ron

On Jul 19, 2016, at 7:37 AM, Deniz Ispaylar [OneDollarGlasses] <Deniz.Ispaylar at onedollarglasses.org<mailto:Deniz.Ispaylar at onedollarglasses.org>> wrote:

Dear cooking stoves experts,

I am working for the non-profit NGO OneDollarGlasses<http://www.eindollarbrille.de/>. We have the mission to set up a social business in development countries worldwide to provide high-quality and affordable glasses to people in need. The glasses are produced by locals in these countries. To ensure that the manufacturing is possible and reliable at any time we have developed a currentless production process.

One part of this process is to heat shrinking tubes with a stove (attachment 1 and attachment 2). For us it seems like that the current stove which we are using is outdated, not healthy neither for the manufacturer nor for the nature and inefficient. So we are looking for some new technologies of stoves which we can implement in our production process. This is the reason why I am addressing this email to you to get expert-input.

The shrinking tube (attachment 3) is made out of irradiation crosslinked Polyolefin and has a shrinking temperature of +120°C. Attachment 4 gives some more information on the shrinking tubes (unfortunately this is only available in German, but easy to translate).

The requirements of the new stove are

  *   that we do have a temperature of roundabout +120°C somewhere near the stove
  *   that the temperature should be reached really fast
  *   that the combustion last for at least 10 minutes
  *   that we can use charcoal
  *   that the combustion is high efficient and has a low-emission

Maybe there is a stove out there, that suits our needs. :-)

I would be more than happy to get some feedback and/or input and can`t wait to start into a discussion on how we can improve our production process.

Warmest regards
Deniz

______________
Deniz Ispaylar
Country Coordinator Malawi
EinDollarBrille e.V.
Böhmlach 22, Germany
91058 Erlangen
T +49 178 499 9738
Skype: kla4dj
deniz.ispaylar at onedollarglasses.org<mailto:martin.aufmuth at onedollarglasses.org>

Web and social media:
www.eindollarbrille.de<http://www.eindollarbrille.de/>
www.onedollarglasses.org<http://www.onedollarglasses.org/>

G L A S S E S   F O R   150   M I L L I O N
Vertretungsberechtigter Vorstand: Martin Aufmuth, Alex Armbruster, Brigitte Weis;
Vereinsregister: Fürth / VR 200672; UID-Nr.: DE286412852

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