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Review on Enhancement of Heat Transfer by Active Method


Author : Mahesh Jadhav, Rahul Awari, Diksha Bibe, Amol Bramhane and Mayura Mokashi

Pages : 221-225
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Abstract

This paper features a full discussion on the application of enhanced heat transfer surfaces to compact heat exchangers. The encouragement for heat transfer enhancement is discussed, and the principles later than compact heat exchangers are summarized. Next, various methods for comparing different types of heat transfer enhancement devices using first or second law resolution are presented .Heat transfer enhancements of both experimental and analytical studies have been reported in view of their industrial and domestic significance. The heat transfer enhancement can be increases by both active and passive method. In that we focus mainly on active method, they require external power, such as electric or audile fields and surface vibration. The way to improve heat transfer achievement is referred to as heat transfer enhancement nowadays a forceful number of thermal engineering researchers are seeking for new enhancing heat transfer methods between surfaces and the surrounding fluid. Due to this phenomenon, enhancement of heat transfer is divided as active or passive methods. Those which require external power source to maintain the enhancement mechanism are named active methods. Examples of active enhancement methods are well stimulating the fluid or vibrating the surface. The principal active methods, i.e. methods involving the supply of external energy, are then detailed. The physical mechanisms growing to heat transfer enhancement are pick out from the analysis.

Keywords: Active method, enhance heat transfer, Surface vibration, Electrohydrnamic, Jets, Fluid vibration

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