ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 25, No. 02, Month AUGUST, Year 2018, Pages 11 - 26

A review: heat transfer enhancement on a surface by dimple and protrusion

Makatar Wae-hayee,Chayut Nuntadusit

Abstract Download PDF

The enhancement of thermal efficiency is very important for energy saving in thermal equipment. In this article, the heat transfer enhancement on a surface with dimples and protrusions were reviewed. When the flow passed through the surface with dimples and protrusions, separation flow, reattachment flow and circulation flow were occurred resulting on increasing turbulent flow and increasing the heat transfer on the surface. In this article, the heat transfer enhancement by using dimple and protrusion technique on the surface in a flow channel, on an impingement surface and in the internal surface of tube using for heat exchanger were presented. In addition, the patents regarding the designing of thermal equipment with dimples and protrusions technique for increasing thermal efficiency was also presented.

Keywords

Heat transfer enhancement, Dimple, Protrusion, Heat exchanger

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