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Thermal efficiency improvement of an LPG gas cooker by a swirling central flame

2001; Wiley; Volume: 25; Issue: 8 Linguagem: Inglês

10.1002/er.708

1099-114X

Sumrerng Jugjai, Suvit Tia, W. Trewetasksorn,

Wind and Air Flow Studies

International Journal of Energy ResearchVolume 25, Issue 8 p. 657-674 Research Article Thermal efficiency improvement of an LPG gas cooker by a swirling central flame S. Jugjai, Corresponding Author S. Jugjai Combustion and Engine Research Laboratory (CERL), Department of Mechanical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandCombustion and Engine Research Laboratory (CERL), Department of Mechanical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this authorS. Tia, S. Tia Combustion and Engine Research Laboratory (CERL), Department of Chemical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this authorW. Trewetasksorn, W. Trewetasksorn Combustion and Engine Research Laboratory (CERL), Department of Chemical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this author S. Jugjai, Corresponding Author S. Jugjai Combustion and Engine Research Laboratory (CERL), Department of Mechanical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandCombustion and Engine Research Laboratory (CERL), Department of Mechanical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this authorS. Tia, S. Tia Combustion and Engine Research Laboratory (CERL), Department of Chemical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this authorW. Trewetasksorn, W. Trewetasksorn Combustion and Engine Research Laboratory (CERL), Department of Chemical Engineering, King Mongkut's University of Technology, Thonburi, Bangkok 10140, ThailandSearch for more papers by this author First published: 29 May 2001 https://doi.org/10.1002/er.708Citations: 36AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The present study proposes a swirling central flame technique to improve the thermal efficiency of a conventional open-flame atmospheric gas cooker which is now widely used as a domestic appliance. More extensive studies were done in an effort to improve the thermal efficiency of the cooker by reducing thermal inertia of the pan support and using the proposed porous medium technology to recover heat from flame radiation to preheat the secondary air entrained from the bottom of the burner. The experimental results showed that the thermal efficiency of the swirling central flame burner with conventional support is approximately 15 per cent higher than that of the conventional radial flow burner. This can be attributed to the higher heat transfer coefficient between hot flue gas and vessel surface of the swirl burner than that of the conventional one. By replacing the conventional support of the developed swirl burner with a lighter one, whose mass was reduced by a factor of 3.7, the thermal efficiency could be increased by about 3 per cent. By using the proposed preheating secondary air support instead of the light support, the thermal efficiency could be further improved by 3 per cent. The predicted thermal efficiency obtained from the proposed model showed good agreement with the experiment. Copyright © 2001 John Wiley & Sons, Ltd. REFERENCES British Standard Institution Incorporated by Royal Charter, BS 2491. 1963. Specification for domestic cooking appliances for use with liquefied petroleum gases. British Gas Corporation, London. Bussman PJT. 1988. Wood stove theory and application in developing country. Thesis Eindhoven, Eindhoven University, 1– 352. Echigo R. 1982. Effective energy conversion method between enthalpy and thermal radiation and application to industrial furnace. Proceedings of the 7th Heat Transfer Conference, Munich, Vol. 6: 361– 366. Lilley DG. 1977. Swirl flows in combustion: a review. AIAA Journal, 15(8): 1063– 1068. Pritchard R, Guy JJ, Connor NE. 1977. 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