@article{scholars2120,
           pages = {1725--1732},
          volume = {11},
             doi = {10.3923/jas.2011.1725.1732},
            year = {2011},
            note = {cited By 5},
          number = {10},
         journal = {Journal of Applied Sciences},
           title = {The tube side heat transfer coefficient for enhanced double tube by Wilson plot analysis},
            issn = {18125654},
          author = {Ramahlingam, T. and Raghavan, V. R.},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955562144&doi=10.3923\%2fjas.2011.1725.1732&partnerID=40&md5=e07fe3542d84dcef3309ee37254e926f},
        abstract = {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. {\^A}{\copyright} 2011 Asian Network for Scientific Information.}
}