Abstract

IMBERT-GONZALEZ, Josué; GARCIA-VALLADARES, Octavio; VIEDMA, A.  and  GUILLEN-GORDIN, Reinaldo. Review of augmentation techniques for heat transfer coefficient in annular spaces using helical elements. Ingeniería Mecánica [online]. 2014, vol.17, n.3, pp.223-233. ISSN 1815-5944.

The transfer enhancement by passive methods is used in several heat exchanger of high effectiveness. The objective of the presented work was the evaluation of the state of the investigations in heat transfer enhancement in annular spaces, from the employment of elements helical. The revision was centered in the employment of twisted tape and wire coil in spiral, the equations of correlation obtained of the coefficient of transfer of increased heat, the coefficient of friction and the evaluation that was carried out of this process on the part of different authors. From the critical analysis of the published results, the authors recommend on the topics that can be analyzed in the future in this area.

Keywords : heat transfer enhancement; twisted tape; helical springs; annular spaces; passive methods.

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