Reducing Ultrafine Particle Emissions Using Air Injection in Wood-Burning Cookstoves.
TLDR
The results indicate that air injection improves cookstove performance and reduces total PM mass but increases total ultrafine PM concentration over the course of high-power cooking.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.read more
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A Laboratory Comparison of Emission Factors, Number Size Distributions, and Morphology of Ultrafine Particles from 11 Different Household Cookstove-Fuel Systems
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Field-based emission measurements of biomass burning in typical Chinese built-in-place stoves.
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A Laboratory Assessment of 120 Air Pollutant Emissions from Biomass and Fossil Fuel Cookstoves
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Different formation mechanisms of PAH during wood and coal combustion under different temperatures.
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TL;DR: In this article, the authors investigated the behavior of emitted PAH in residential solid fuel combustion (RSFC) and found that the variations of PAH emission factors and size-resolved profiles are highly affected by fuel type and combustion temperature.
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