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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/13622

Title: Design, Fabrication and Evaluation of Non-Continuous Inverted Downdraft Gasifier Stove Utilizing Rice husk as feedstock
Authors: Osei, Isaac
Kemausuor, Francis
Commeh, MichaelKweku
Oppong Akowuah, Joseph
Owusu-Takyi, Lovans
Keywords: Gasification
Issue Date: 2020
Publisher: Elsevier
Abstract: Gasification technology has been proven to be an effective conversion technology for biomass resources. Despite the existence of gasifier stoves, its utilisation and adaptation has not been extensive in Ghana mainly due to its high cost and inefficiencies. The pa- per presents design, fabrication and performance analysis of an inverted downdraft gasi- fier cookstove utilising rice husk as feedstock at laboratory level. Non-continuous inverted downdraft gasifier cookstove was designed for a family size of five with energy require- ment for cooking of 5,333 kJ/hr. Laboratory test for the cookstove was performed to deter- mine thermal efficiency and other performance parameters as well as CO, CO 2 and particu- late matter emissions using Water Boiling Test (WBT) version 4.2.3. The Portable Emission Monitoring System was used to conduct the WBT experiment. Inverted downdraft gasifier of height and diameter of 0.88 m and 0.22 m respectively was designed and fabricated. Evaluation of the gasifier stove revealed thermal efficiency varying between 30.5-38.1%. Emission analysis of the stove revealed low emissions compared to traditional cookstoves as well as other improved cookstove with high Power CO and PM 2.5 emissions found to be 19.35 g/min/L and 932.73mg/MJd respectively. The average CO/CO 2 ratio was also deter- mined to be 0.055. The findings indicate that, the developed inverted downdraft gasifier stove is very efficient, however, the CO, CO 2 and PM 2.5 emissions can be improved further to meet recommended levels presented by the World Health Organization (WHO).
Description: This article is published in Elsevier and also available at https://doi.org/10.1016/j.sciaf.2020.e00414
URI: 10.1016/j.sciaf.2020.e00414
Appears in Collections:College of Science

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