[Stoves] Ulaanbaatar Air Quality

[Ronal W. Larson]

Professor Nurhuda  cc list and Crispin:

   Added questions:

1.  Have you used it also with any form of biomass (pellets, chips, etc) and does it behave differently with biomass vs coal, char?

2.    With biomass, what weight percentage of char output is possible?

3.   It appears that this is primarily for space heating.  Have you used it for cooking?

4.   Perhaps the fuel load fills the entire outer cylinder volume?  No outer annulus preheating?

5.   Is it possible to control primary air (and power levels and turn down ratios) using plugs or an outer control “band”?

Thanks for sharing.

Ron


On Nov 9, 2013, at 10:41 AM, crispinpigott at gmail.com wrote:

> That looks really good!
> 
> Nice short flame. 
> 
> Does it burn coal and charcoal?
> 
> Thanks
> Crispin 
> 
> From: mnurhuda at ub.ac.id
> Sent: Saturday, November 9, 2013 10:30
> To: Discussion of biomass cooking stoves
> Reply To: Discussion of biomass cooking stoves
> Subject: Re: [Stoves] Ulaanbaatar Air Quality
> 
> Dear all,
> 
> We have developed coal briquette stove that can provide flame duration up
> to 14 hours, depending on the heating content of coals. The stove is TLUD.
> 
> Please check the picture attached.
> 
> Regards
> M. Nurhuda
> 
> 
> On Fri, 8 Nov 2013 16:37:16 -0500, "Crispin Pemberton-Pigott"
> <crispinpigott at gmail.com> wrote:
> > Dear Teddy
> > 
> > 
> > 
> > Generally speaking the locally made ones are poorly designed, leaky and
> > have
> > a power spectrum and controllability that meets the local demand. 
> People
> > also know how to use them.
> > 
> > 
> > 
> > In Ulaanbaatar the artisanal stoves last from 5 to 10 years but highly
> > variable. They are quite good wood stoves, for which the brick lining is
> > removed.
> > 
> > 
> > 
> > If we could reliably get harder, smaller coal (size sorted) some could
> > operate for 12 hours without attention.
> > 
> > 
> > 
> > All the new (subsidized) ones are well made. They have to fix them free
> for
> > the first two years under warranty and so on. Several run way too hot so
> > they won't last 5 years. People generally want huge cooking and heating
> > power.
> > 
> > 
> > 
> > Regards
> > 
> > Crispin
> > 
> > 
> > 
> > 
> > 
> > Interesting discussion, sorry if this is a bit off the point but has
> anyone
> > done or heard of any new life cycle analysis research on the
> manufacturing
> > and distribution aspects of new stoves vis-a-vis the ones made in brand
> new
> > in factories as opposed to the ones made by hand at a village level with
> > recycled materials? 
> > 
> > 
> > 
> > What impacts of localized pollution does this have do you think? 
> > 
> > 
> > 
> > Teddy
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