[Stoves] Ulaanbaatar Air Quality
mnurhuda at ub.ac.id
mnurhuda at ub.ac.id
Sat Nov 9 16:46:17 CST 2013
Ron and all,
I do not use biomass pellet nor briquettes, but coal briquettes with
diameter around 3 cm.
For pellet, I also developed another stove, but at moment the longest
burning time is only 6 hours.
You are right, the stove is only for space heating, since I developed the
stove based on the request of chicken farm industry.
The pre-heating are performed in two ways, through outer and inner
cylinder.
We adjust the opening of primary air only to control the fire power.
Regards
M. Nurhuda
On Sat, 9 Nov 2013 13:42:23 -0700, "Ronal W. Larson"
<rongretlarson at comcast.net> wrote:
> 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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