 Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifierS. Jarungthammachote and A. Dutta Energy, 2007, vol. 32, issue 9, 1660-1669 Abstract: The management of municipal solid waste (MSW) and the current status of world energy resources crisis are important problems. Gasification is a kind of waste-to- energy conversion scheme that offers the most attractive solution to both waste disposal and energy problems. In this study, the thermodynamic equilibrium model based on equilibrium constant for predicting the composition of producer gas in a downdraft waste gasifier was developed. To enhance the performance of the model, further modification was made by multiplying the equilibrium constants with coefficients. The modified model was validated with the data reported by different researchers. MSW in Thailand was then used to simulate and to study the effects of moisture content (MC) of the waste on the gasifier's performance. The results showed that the mole fraction of H2 gradually increases; CO decreases; CH4, which has a very low percentage in the producer gas increases; N2 slightly decreases; and CO2 increases with increasing MC. The reaction temperature, the calorific value, and the second law efficiency, decrease when MC increases. Keywords: Downdraft waste gasifier; Thermodynamic equilibrium model; Second law analysis; Municipal solid waste; Waste to energy (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:32:y:2007:i:9:p:1660-1669 DOI: 10.1016/j.energy.2007.01.010 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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