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dc.contributor.authorWalmsley, Timothy Gordon
dc.contributor.authorWalmsley, Michael R.W.
dc.contributor.authorAtkins, Martin John
dc.contributor.authorHoffmann-Vocke, Jonas
dc.contributor.authorNeale, James R.
dc.coverage.spatialConference held at Prague, Czech Republicen_NZ
dc.identifier.citationWalmsley, T. G., Walmsley, M. R. W., Atkins, M. J., Hoffman-Vocke, J., & Neale, J. R. (2012). Numerical performance comparison of different tube cross–sections for heat recovery from particle-laden exhaust gas streams. Procedia Engineering, 42, 1351-1364. doi:10.1016/j.proeng.2012.07.527en_NZ
dc.description.abstractHeat recovery from exhaust gas streams is applicable to a wide variety of industries. However, high heat transfer resistance of gases and the presence of entrained particulate matter that readily fouls limits industry uptake of current heat recovery technology. Improvements to standard heat exchanger designs are needed. In this study Computational Fluid Dynamics (CFD) is used to investigate the effect of ten different tube cross-sections on heat transfer resistance, gas flow resistance and foulability. The average wall shear stress around the shape is used to predict foulability and an estimated asymptotic fouling resistance is used to calculate an equivalent fouled Coulburn j factor, jf. CFD results show the best tube for exhaust heat recovery is an elliptical tube closely followed by the flattened round tube. The ellipse shape produced fouled Coulburn j factor, jf values, expressed as a ratio of tube bank friction factor f, over 100% higher than that of standard round tube. A flattened round tube is also promising, given enough spacing between the tubes, and may be the practical economic optimum.en_NZ
dc.relation.ispartofProcedia Engineering
dc.subjectheat recoveryen_NZ
dc.subjectcomputational fluid dynamicsen_NZ
dc.subjectparticle depositionen_NZ
dc.titleNumerical performance comparison of different tube cross–sections for heat recovery from particle-laden exhaust gas streamsen_NZ
dc.typeJournal Articleen_NZ
dc.relation.isPartOfProcedia Engineeringen_NZ

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