Biomass cookstoves: A review of technical aspects

Sutar, Kailasnath B.; Kohli, Sangeeta; Ravi, M.R.; Ray, Anjan

doi:10.1016/j.rser.2014.09.003

Cited by 116 publications

(54 citation statements)

References 196 publications

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“…4 Researchers have explored new environmental technologies for increasing efficiency in biomass cookstoves while decreasing harmful emissions, primarily focusing on particulate matter (PM). [5][6][7][8][9][10][11] Previous research reveals that introducing turbulence (via air injection) into the gas-phase combustion zone can dramatically improve cooking performance and reduce the total mass of PM generated from biomass combustion. 5,9,11 Injecting air into the gas-phase combustion zone to generate turbulence (here-on referred to as air injection) promotes better gaseous fuel-air mixing, leading to more complete combustion, and can increase residence time of soot in the flame, promoting oxidation of soot.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8][9][10][11] Previous research reveals that introducing turbulence (via air injection) into the gas-phase combustion zone can dramatically improve cooking performance and reduce the total mass of PM generated from biomass combustion. 5,9,11 Injecting air into the gas-phase combustion zone to generate turbulence (here-on referred to as air injection) promotes better gaseous fuel-air mixing, leading to more complete combustion, and can increase residence time of soot in the flame, promoting oxidation of soot. 12 Although air injection can decrease total PM mass emitted, it is unclear if this technique reduces the number concentration of all PM emission sizes uniformly and may concurrently increase the number of ultrafine particles per mass of fuel burned, which may be more harmful to human health.…”

Section: Introductionmentioning

confidence: 99%

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

Rapp

Caubel

Wilson

et al. 2016

Environ. Sci. Technol.

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Rapp

Caubel

Wilson

et al. 2016

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…This method is much more time-saving and cost effective than building and testing out the physical prototype. The literature on these aspects is rather limited, nevertheless, it has been expanding in the past few years [17]. To minimize wastage of funds on building a physical model and based on the test results modifying prototype, we consider using CFD analysis to simulate combustion using computer modelling of the prototype design.…”

Section: Methodsmentioning

confidence: 99%

CFD Study of an Improved Biomass Cookstove with Reduced Emission and Improved Heat Transfer Characteristics

Ali¹,

Wei²

2017

JOCET

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Abstract-In this paper, in an effort towards reducing indoor air pollution (IAP) exposure for cookstove users, an improved biomass cookstove has been proposed. A computational fluid dynamics (CFD) combustion study has been carried out for the proposed cookstove to analyze the combustion and heat transfer behavior using ANSYS Fluent Simulation. The wood combustion phenomenon inside the stove is modelled as gaseous combustion of volatiles generated by pyrolysis. Temperature gradients, velocity profiles and combustion product concentrations are presented. Based on comparison of CFD predicted results with a popular commercial improved cook stove (ICS), it was concluded that the proposed cook stove yields reduced combustion product concentrations as well as faster cooking resulting in better energy efficiency and a health friendly cook stove.

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“…Residential burning of biomass is not well established, from the point of view of emissions [27]. Sutar et al [25] reported that the during biomass combustion, there is drying and heating of the fuel, pyrolysis and the emission of volatiles and char formation. Volatiles combustion is in the flaming phase, and char combustion in the smoldering phase.…”

Section: Residences (A) Compacted Biomassmentioning

confidence: 99%

Particulate Matter Emission Factors for Biomass Combustion

et al. 2016

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Emission factor is a relative measure and can be used to estimate emissions from multiple sources of air pollution. For this reason, data from literature on particulate matter emission factors from different types of biomass were evaluated in this paper. Initially, the main sources of particles were described, as well as relevant concepts associated with particle measurements. In addition, articles about particle emissions were classified and described in relation to the sampling environment (open or closed) and type of burned biomass (agricultural, garden, forest, and dung). Based on this analysis, a set of emission factors was presented and discussed. Important observations were made about the main emission sources of particulate matter. Combustion of compacted biomass resulted in lower particulate emission factors. PM 2.5 emissions were predominant in the burning of forest biomass. Emission factors were more elevated in laboratory burning, followed by burns in the field, residences and combustors.

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Biomass cookstoves: A review of technical aspects

Cited by 116 publications

References 196 publications

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

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

CFD Study of an Improved Biomass Cookstove with Reduced Emission and Improved Heat Transfer Characteristics

Particulate Matter Emission Factors for Biomass Combustion

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