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Experimental Study of Heat Transfer Enhancement in Tube in Tube Heat Exchanger using Rectangular Wing Type Vortex Generator


Author : V.A. Chormale and D.D. Palande

Pages : 387-392, DOI:http://Dx.Doi.Org/10.14741/Ijcet/22774106/spl.5.6.2016.72
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Abstract

Vortex generator is responsible for creating the turbulence in the flow of fluid. The experiment is carried out to enhance the heat transfer coefficient with installing the rectangular wing type of vortex generator in tube in tube heat exchanger, these vortex generators are provided on cross shape plate by lancing operation and this cross shape plate is inserted in the test section. These vortex generators cause stream wise longitudinal vortices in the test section which disrupt the growth of the thermal boundary layer and enhances heat transfer rate. Influence of geometrical parameter of rectangular wing vortex generator such as wing height, longitudinal wing pitch and wings attach angle on heat transfer coefficient is studied. Air is taken as the working fluid, the flow regime is assumed to be laminar. By varying the above parameter the heat transfer coefficient is calculated and by comparing all the result optimum size of rectangular wing is achieved.

Keywords: Vortex generator, Rectangular wing, Heat exchanger, Cross plate

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