User-centric approach for the design and sizing of natural convection biomass cookstoves for lower emissions

Kshirsagar, Milind P.; Kalamkar, Vilas R.

doi:10.1016/j.energy.2016.09.048

Cited by 21 publications

(9 citation statements)

References 29 publications

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“…By using Herwijn empirical formulae, height of the flame for the stove without grate has been found 19.98cm in which thermal efficiency has been found 21.93% [20]. In this condition, combustion process was found normal and there was no exess soot formation on the pot.…”

Section: Thermal Efficiency At Different Combustion Chamber Heightmentioning

confidence: 98%

“…At larger opening, supply of excess air causes quenching of flame and at the same time more convection and radiation heat losses through openings. From design aspect, minimum opening area of combustion chamber should maintain with the capacity to accommodate at highest firepower [19]. Considering social viability [18] and design aspect, 148 cm 2 area is suitable for optimum performance.…”

Section: Thermal Efficiency At Different Opening Area Of Air Fuel Inletmentioning

confidence: 99%

“…At best dimension of air fuel inlet opening of 148cm2 , combustion chamber height of 20cm, entry area of interconnecting tunnel 56.95cm 2 and chimney height of 113cm, thermal efficiency has been found to be19.45%, 21.93%, 19.46%, 18.16% respectively. • Thermal efficiency of cookstove at best possible dimension has been found 22.44% and 25.6% for the use of grate, insulating material and narrow channel; i.e., 7.60% increment from existing design.…”

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confidence: 98%

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Experimental Analysis of Thermal Efficiency of Mud Improved Cookstove With Variation of Different Parameters and Economic Analysis

Darlami

Ale

Pokharel

2020

J. Inst. Engineering

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Most of the rural people of Nepal use fuelwood for cooking and space heating in residential sector. Government of Nepal has announced to make Nepal as a smokeless country by replacing traditional cookstoves. Two pot mud improved cookstove is one of the most promoted cookstoves in the context of Nepal. There is a need to study the effects of different parameters on mud improved cookstove for its better performance. The objective of this work is to study the effect of variation of different parameters on two pot mud ICS and identify parameters for its better performance. Power test of cookstove, specially focusing on thermal efficiency, has been performed by changing different parameters. Effect of varying fuel feeding rate, chimney height, opening area of air fuel inlet, inlet area of interconnecting tunnel, combustion chamber height, grate height and insulating material on thermal efficiency have been studied individually. Then cookstove has been developed by different best combinations such as a) geometrical parameters b) use of grate and insulations in best geometrical parameters and formation of channel on the opening. Thermal efficiency of modified cookstove increased from 18% to 25.6%; i.e. the increment of 7.60%. Economic analysis of different thermal efficiencies cookstove has been performed.

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Section: Thermal Efficiency At Different Combustion Chamber Heightmentioning

confidence: 98%

Section: Thermal Efficiency At Different Opening Area Of Air Fuel Inletmentioning

confidence: 99%

mentioning

confidence: 98%

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Experimental Analysis of Thermal Efficiency of Mud Improved Cookstove With Variation of Different Parameters and Economic Analysis

Darlami

Ale

Pokharel

2020

J. Inst. Engineering

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“…There is a distinct cooking situation for every cuisine. The range of cooking power and shape and size of utensils required are almost rigid at the user's end (Kshirsagar and Kalamkar, 2016). Researchers are focusing on the development of biomass…”

Section: User-centric Design Experimental and Optimization Techniquesmentioning

confidence: 99%

Current challenges and future prospect of biomass cooking and heating stoves in Asian Countries

Ahmad

Ilyas

et al. 2022

Front. Energy Res.

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The utilization of biomass for cooking and heating is old, occurring from the early stages of human evolution because of its wide and easy availability. In Asia, a majority of the population is dependent on solid biomass for cooking and heating applications. Biomass cookstove produces emissions like carbon monoxide (CO), and particulate matter with aerodynamic diameter ≤2.5 μm (PM2.5) which are dependent on the classifications and characteristics of fuel used in stoves. These emissions trigger many health risks because of the utilization of traditional cookstoves (TCS) which have less thermal efficiency. The literature contains a considerable amount of information on biomass cookstoves; however, it is dispersed particularly in Asian countries. In this principle, this paper gives an overview of available literature on biomass cookstoves for cooking and heating in Asian countries which are involving Bangladesh, China, India, Mongolia, Nepal, Pakistan, Sri Lanka, and Laos. This paper covers a detailed discussion on various aspects of biomass cookstoves: history, classification, fuel characteristics, health risks, design criteria, the scenario in selected Asian countries, thermal efficiency and emission comparison, and barriers to dissemination of improved biomass cookstoves (ICS). Learning from the review and comparison made conclude that the ICS has better thermal efficiency, and lesser emissions, as well as health risks but, have some potential barriers to dissemination.

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“…To better understand the importance of the issue, it is worth mentioning in this study that in woodstove modelling, great attention has always been focused on the influence of design parameters such as geometry or insulation materials [ 16 , 17 , 18 , 19 ], whereas little prior consideration has been devoted to the operating firepower level impacting aerodynamics and chemistry in the stove. The firepower–performance dependency becomes a key issue whose interest has been growing only in the last 10 years [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

A New Perspective on Cooking Stove Loss Coefficient Assessment by Means of the Second Law Analysis

Augustin

Vertomene

Bernard³

et al. 2022

Entropy

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The chimney effect taking place in biomass cooking stoves results from a conversion process between thermal and mechanical energy. The efficiency of this conversion is assessed with the stove loss coefficient. The derivation of this quantity in cooking stove modelling is still uncertain. Following fluid mechanics, this loss coefficient refers to an overall pressure drop through stove geometry by performing an energy balance according to the first law of thermodynamics. From this approach, heat-transfer processes are quite ignored yet they are important sources of irreversibilities. The present work takes a fresh look at stove loss coefficient assessment relying on the second law of thermodynamics. The purpose in this paper is to identify the influence of operating firepower level on flow dynamics in biomass natural convection-driven cooking stoves. To achieve that, a simplified analytical model of the entropy-generation rate in the flow field is developed. To validate the model, experiments are conducted first on a woodburning stove without cooking pot to better isolate physical processes governing the intrinsic behaviour of the stove. Then, for the practical case of a stove operating with a cooking pot in place, data from published literature have served for validation. In particular, mass-flow rate and flue gas temperature at different firepower levels have been monitored. It turns out that losses due to viscous dissipations are negligible compared to the global process dissipation. Exergy analysis reveals that the loss coefficient should rather be regarded from now as the availability to generate flow work primarily associated with the heat-transfer Carnot factor. In addition, the energy flux applied as flow work has to be considered as pure exergy that is lost through consecutive energy-transfer components comprising the convective heat transfer to the cooking pot. Finally, this paper reports a satisfactory agreement that emerged between the exergy Carnot factor and the experimental loss coefficient at different fuel-burning rates.

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User-centric approach for the design and sizing of natural convection biomass cookstoves for lower emissions

Cited by 21 publications

References 29 publications

Experimental Analysis of Thermal Efficiency of Mud Improved Cookstove With Variation of Different Parameters and Economic Analysis

Experimental Analysis of Thermal Efficiency of Mud Improved Cookstove With Variation of Different Parameters and Economic Analysis

Current challenges and future prospect of biomass cooking and heating stoves in Asian Countries

A New Perspective on Cooking Stove Loss Coefficient Assessment by Means of the Second Law Analysis

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