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Heat Transfer Augmentation using Almond Dimple Tubes with Random Arrangement

Author : Shiva K. Vyas, Anand R. Nadgire, Brijesh S. Patil and Sachin R. Kale

Pages : 133-135;
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Objective of the present project work was to design, manufacture and evaluate the performance of a cross-flow heat exchanger using plain tube and almond dimple randomly arrangement. Air and Water were the fluids used to carry out test. The objective was to analyse the effect of gas flow over two different tubes. The mass flow rate of air was varied such that the Reynolds number was in between 10000 to 37000. Since the objective is to analyse the performance of gas flow over tubes, the tube side fluid flow condition was kept constant.. Comparisons of experimental results for Plain and almond tube when randomly arranged. The performance parameters related to heat exchanger such as pressure drop, overall heat transfer coefficient, heat duty have been reported in this work. Pressure drop found to be more in case of almond dimple tubes when compare with plain tube.

Keywords: Heat exchanger, dimple tubes, cross flow heat exchanger


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