Reducing ultrafine particle emissions using air injection in wood-burning cookstoves

Rapp, Vi H.; Caubel, Julien J.; Wilson, Daniel L.; Gadgil, Ashok J.

doi:10.1021/acs.est.6b01333

Reducing ultrafine particle emissions using air injection in wood-burning cookstoves

Journal Article · Mon Jun 27 00:00:00 EDT 2016 · Environmental Science and Technology

DOI:https://doi.org/10.1021/acs.est.6b01333· OSTI ID:1342536

Rapp, Vi H. ^[1]; Caubel, Julien J. ^[2]; Wilson, Daniel L. ^[2]; Gadgil, Ashok J. ^[2]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

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. Finally, 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.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1342536

Alternate ID(s):: OSTI ID: 1393068

Report Number(s):: LBNL--1006082; ir:1006082

Journal Information:: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 15 Vol. 50; ISSN 0013-936X

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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