[Stoves] Cleanest Stove Ever?

Crispin Pemberton-Pigott crispinpigott at outlook.com
Sun Oct 25 00:02:21 CDT 2015


Dear Paul

I knew that would get your attention. I will do my best to get one. The project requirements do not include a minimum turn down ratio, though it is recorded. We do not interfere in the market or the social acceptance criteria, just test things.

I don't even know the name of the producer. The power is low, the control modest. More important for everyone is how it works and why it does what it does. I would still be quite happy if it turns out the 'real emissions' are five times what these tests say it it, it will still be comparable with LPG.

Now let's revisit the statement that people need clean cooking solutions because they have traditionally been forced to cook using 'solid fuels'. There is nothing inherent in all solid fuels‎ that prevents then from being burned cleanly.

The very best lignite burning stoves seen in Mongolia literally strip the PM out of the air by burning ambient particles while producing none themselves. That is another ‎example of 'competing with gas'.

It is also worth noting that such stoves cook with less total PM than a power station supplying electricity because of transmission and combustion inefficiencies. That is a repeat of the space heating stove performance which cross that threshold at least five years ago.

I am not sure who will make it to Ghana. There are many reports of people having trouble getting a visa and tickets. I have the former but yet not the latter. ‎China may not make it. I know someone who has a ticket but no visa. I am on the road. It is not possible to get a visa when travelling.

I'll see you if I can.
Regards
Crispin in Beijing

Crispin and all,

That is indeed wonderful news for eventually solving the health problems
world-wide concerning Household Air Pollution (HAP)!!!!!!!!!!!!

Accomplishing that with NATURAL DRAFT is doubly exciting!!!

The stove was capable of doing that cooking test.   We await information
about its power level(s) and turn-down ratio, both of which are
important but truly secondary to the low emissions and high efficiency
capabilities.

Looking forward to seeing the stove in Accra.   A biomass stove that is
"Tier 4" in all categories by the end of 2015 will do wonders for
accomplishing the GACC goal of 100 million CLEAN cookstoves by 2020.

In Accra I and others will have good news (and functioning units)
relating to forced air TLUDs with configurations suitable for mass
production utilizing industrial capabilities that are already existent
in numerous developing countries.   And using a variety of biomass types
and shapes.

I will be in Ghana from 1 through 14 November, and looking for contacts
with all who are interested.

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
Email:  psanders at ilstu.edu
Skype: paultlud      Phone: +1-309-452-7072
Website:  www.drtlud.com

On 10/24/2015 10:26 PM, Crispin Pemberton-Pigott wrote:
> Dear Friends of Clean Combustion
>
> The second call for technology proposals for the CSI-Indonesia is
> concluding with an announcement of test results to be made this coming
> week. I can't mention names but I wanted the TLUD community and
> stovers in general to be aware that one of the submissions is more
> than interesting.
>
> It is a TLUD charcoal maker that tested three times with a PM emission
> for the Central Java combination cooking cycle (the Technical Test) of
> just 2 mg/MJ delivered. This is about 1/4 of the PM from an LPG stove
> (as tested in India) and 1/10th of the emissions of a Philips fan
> stove burning pellets. Being somewhat suspicious because the test
> results could be accidentally that low three times in a row, it was
> repeated with great care to see nothing could possibly interfere with
> the result and the 4th test was substantially the same as the first
> three, except for a lower CO value <1 g/MJ delivered into the pot.
>
> The system efficiency is in the high 30's. The test method assumes
> char produced cannot be reused (see the test method online). The
> energy efficiency is much higher.
>
> This small, inexpensive natural draft product show‎s that solid fuels
> (Albasia pellets with 5.6% moisture in this case) can burn cleaner
> than LPG and natural gas if the fuel is predictable and standardised.
>
> The cost of standardising sustainable wood pellets is much less than
> the cost of introducing ‎LPG, electricity or other liquid fuels. The
> result should of course be confirmed in other labs because it is
> running on the limits of detection and quantification wherever it is
> tested. If these results can be confirmed it throws down the gauntlet
> to the producers of other stoves that burn ethanol, DME, methanol and
> LPG to improve their product performance to match both this wood
> pellet burner and the very clean lignite burning stoves in Mongolia.
>
> Let's give them a round of applause in Ghana when the product is
> identified. I will try to obtain one this week to bring to Accra.
>
> Best regards
> Crispin
>

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