[Stoves] Reducing Ultrafine Particle Emissions Using Air Injection in Wood-Burning Cookstoves

[Rogerio carneiro de miranda]

Quite interesting.

I am more interested on the aspect of reduce cleaning of chimneys.  For
chimney stoves the impact of such technology might be greater on reduced
cleaning frequency of chimneys than on IAP directly. This may benefit
greater adoption of chimney stoves (less cleaning), which also naturally
minimize IAP.

Rogério



2016-07-13 11:35 GMT-03:00 Tom Miles <tmiles at trmiles.com>:

> From Ashok Gadgil's group at Berkeley:
> The following content is published on the ACS Web Editions Platform:
>
> Reducing Ultrafine Particle Emissions Using Air Injection in Wood-Burning
> Cookstoves
> Vi H. Rapp, Julien J. Caubel, Daniel L. Wilson and Ashok J. Gadgil
> Environ. Sci. Technol., Article ASAP
> DOI: 10.1021/acs.est.6b01333
> Publication Date (Web): July 13, 2016
> Copyright © 2016, American Chemical Society
> http://pubs.acs.org/doi/abs/10.1021/acs.est.6b01333
>
> Abstract
> In order to address the health risks and climate impacts associated with
> pollution from cooking on biomass fires, researchers have focused on
> designing new cookstoves that improve cooking performance and reduce
> harmful emissions, specifically particulate matter (PM). One method for
> improving cooking performance and reducing emissions is using air injection
> to increase turbulence of unburned gases in the combustion zone. Although
> air injection reduces total PM mass emissions, the effect on PM size
> distribution and number concentration has not been thoroughly investigated.
> Using two new wood-burning cookstove designs from Lawrence Berkeley
> National Laboratory, this research explores the effect of air injection on
> cooking performance, PM and gaseous emissions, and PM size distribution and
> number concentration. Both cookstoves were created using the
> Berkeley–Darfur Stove as the base platform to isolate the effects of air
> injection. The thermal performance, gaseous emissions, PM mass emissions,
> and particle concentrations (ranging from 5 nm to 10 μm in diameter) of the
> cookstoves were measured during multiple high-power cooking tests. The
> results indicate that air injection improves cookstove performance and
> reduces total PM mass but increases total ultrafine (less than 100 nm in
> diameter) PM concentration over the course of high-power cooking.
>
> T R Miles Technical Consultants Inc.
> tmiles at trmiles.com
>
>
>
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