relation: https://khub.utp.edu.my/scholars/2120/ title: The tube side heat transfer coefficient for enhanced double tube by Wilson plot analysis creator: Ramahlingam, T. creator: Raghavan, V.R. description: The purpose of the investigation presented in this study is to evaluate the tube side single phase heat transfer performance on the EXTEK (Twisted Multi-Head) tube. The geometry of the cross-section for a flow passage has an effect on its convective heat transfer capabilities. For concentric annuli in a double tube heat exchanger, the annular surface enhancement and tube profile enhancement play an important role. EXTEK (Twisted Multi-Head) uses twisted extrusion of a star shape tube for tube profile enhancement. The study was able to develop individual heat transfer coefficient correlations for this new method of enhancement for the turbulent flow regimes. A plain annulus was also investigated for comparison. The Wilson plot method was used to determine the tube side heat transfer coefficients from which the Nusselt type correlations were developed. © 2011 Asian Network for Scientific Information. date: 2011 type: Article type: PeerReviewed identifier: Ramahlingam, T. and Raghavan, V.R. (2011) The tube side heat transfer coefficient for enhanced double tube by Wilson plot analysis. Journal of Applied Sciences, 11 (10). pp. 1725-1732. ISSN 18125654 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955562144&doi=10.3923%2fjas.2011.1725.1732&partnerID=40&md5=e07fe3542d84dcef3309ee37254e926f relation: 10.3923/jas.2011.1725.1732 identifier: 10.3923/jas.2011.1725.1732