Design, Fabrication and Evaluation of Non-Continuous Inverted Downdraft Gasifier Stove Utilizing Rice husk as feedstock

Osei, Isaac; Kemausuor, Francis; Commeh, Michael Kweku; Akowuah, Joseph Oppong; Owusu-Takyi, Lovans

doi:10.1016/j.sciaf.2020.e00414

Cited by 12 publications

(12 citation statements)

References 15 publications

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“…In this work, the ash content of the pellets is ∼4 times higher than that of the chips (Table ). The specific energy consumption per unit time of the gasification-based cookstove characterized in this work is similar to what was reported by Osei et al, with values ∼170 kJ/L·min …”

Section: Resultssupporting

confidence: 90%

“…Gupta et al found CO emissions of 3.62 g/MJ d for a gasification cookstove fed with wood. Osei et al reported a CO emission factor of 55.77 g/kg, while the TLUD cookstove in this work reached a CO emission factor of 52.90 and 46.34 g/kg for pellets and chips, respectively.…”

Section: Resultsmentioning

confidence: 41%

“…Some TLUD cookstove designs have reached WBT efficiencies between 30 and 38%. 31 Besides, efficiencies around 42%, CO emissions of ∼0.6 g/MJ d , and PM of ∼48 mg/MJ d (stoves Tier 4) have been reported. 32 Sonarkar and Chaurasia 26 evaluated coconut shell, wood chips, and pellets as fuels in natural and forced draft cookstoves; the forced-draft cookstove, operating with wood pellets, reached the highest efficiency (∼43%).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the difference between natural and forced draft for TLUD cookstoves, Suresh et al reported efficiencies between 16 and 27% and from 30 to 35% for natural and forced draft cookstoves, respectively. Some TLUD cookstove designs have reached WBT efficiencies between 30 and 38% . Besides, efficiencies around 42%, CO emissions of ∼0.6 g/MJ d , and PM of ∼48 mg/MJ d (stoves Tier 4) have been reported .…”

Section: Introductionmentioning

confidence: 99%

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Parametric Analysis of a Gasification-Based Cookstove as a Function of Biomass Density, Gasification Behavior, Airflow Ratio, and Design

2022

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The energy performance and emissions (carbon monoxide and total suspended particulate matter) of a biomass gasification-based cookstove under a modified water boiling test (WBT 4.2.3 protocol) were characterized here. The controllable process parameters analyzed were the biomass bulk density (pelletsWP and chipsWCH) and the combustion-air/gasification-air ratio (2.8, 3.0, and 3.2). Moreover, a design parameter of the cookstove was analyzed through two combustion chamber designs (combustion chambers 1 and 2). The cookstove was characterized in detail considering the complete cookstove (control volume 1), the combustion chamber (control volume 2), and the gasification process (control volume 3). The cookstove reached an average efficiency of 25.2% for pellets and 24.1% for chips. The best behavior for the cookstove was achieved when pellets were used, which is attributed to their higher bulk density and to the fact that during their gasification process, the biochar yield was 12% higher, while the biomass consumption decreased by 16% compared to the chips. The carbon monoxide specific emissions were 2.78 g/MJd for pellets and 2.75 g/MJd for chips. On average, the cookstove released total suspended particulate matter between 74.11 and 122.70 mg/MJd. The cookstove low emissions are ascribed to the proper combustion air flow and the combustion chamber design, which favored the mixing between producer gas and combustion air.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 41%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parametric Analysis of a Gasification-Based Cookstove as a Function of Biomass Density, Gasification Behavior, Airflow Ratio, and Design

2022

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“…Another study indicated that coconut shell has a thermal efficiency of 36.7 ± 1 percent, Prosopis Juliflora has a thermal efficiency of 36 ± 1 percent, and wood pellets have a thermal efficiency of 38.5 ± 1 percent ( Sakthivadivel and Iniyan 2017 ). ( Osei et al., 2020 ) achieved a thermal efficiency of 30.5–38.1 percent by applying WBT version 4.2.3 and using rice husk as fuel.…”

Section: Introductionmentioning

confidence: 99%

Development and performance analysis of top lit updraft: natural draft gasifier stoves with various feed stocks

Hailu

2022

Heliyon

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Effect of the air flows ratio on energy behavior and NOx emissions from a top-lit updraft biomass cookstove

Muñoz,

Gutiérrez,

Pérez

2023

J Braz. Soc. Mech. Sci. Eng.

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Biomass as an energy source for three-stone cookfires is commonly used for cooking and heating rural and isolated households in developing countries; therefore, indoor air quality decreases. In this work, the effect of the air flows ratio (combustion air/gasification air, CA/GA: 2.8, 3.0, and 3.2), and the start type, cold (CS), and hot (HS), on the energy behavior and emissions from a forced-draft top-lit updraft (TLUD) cookstove, using wood pellets as fuel, is studied. Furthermore, the gasification process was thermodynamically characterized. The TLUD cookstove assessment was carried out following a modified water boiling test (WBT). The highest thermal efficiency of the cookstove was 26.74%. The lowest specific CO, NOx, and total suspended particle matter (TSPM) emissions were 1.8 g/MJd, 106 mg/MJd, and 78.32 mg/MJd, respectively; this was attributed to a proper mixture between the producer gas and the combustion air. The gasification process showed a better energy yield under the hot start due to the preheating induced in the cookstove reactor. The optimal values of the producer gas heating value (LHVpg), cold gas efficiency (CGE), and the biochar yield (Ychar) were 3.53 MJ/Nm3, 58.61%, and 12.49%, respectively. Here, an opposite effect was found for the air flows ratios assessed. The cookstove behavior improved as the mixture between CA and GA was suitable, achieving the maximum at CA/GA = 3.0. However, the NOx emissions increased with the increment of CA/GA ratios (from 2.8 to 3.2). Therefore, future works must address the NOx emission reduction without penalizing performance or permanent emissions from the TLUD cookstoves.

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Design, Fabrication and Evaluation of Non-Continuous Inverted Downdraft Gasifier Stove Utilizing Rice husk as feedstock

Cited by 12 publications

References 15 publications

Parametric Analysis of a Gasification-Based Cookstove as a Function of Biomass Density, Gasification Behavior, Airflow Ratio, and Design

Parametric Analysis of a Gasification-Based Cookstove as a Function of Biomass Density, Gasification Behavior, Airflow Ratio, and Design

Development and performance analysis of top lit updraft: natural draft gasifier stoves with various feed stocks

Effect of the air flows ratio on energy behavior and NOx emissions from a top-lit updraft biomass cookstove

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