Experimental investigation of anodized/spray pyrolysed nanoporous structure on heat transfer augmentation

作     者：Kalaiselvam S. Gugan M.S. Kuraloviyan E. Meganathan R. NiruthiyaPriyan A. Swaminathan M.R. 

作者机构：Department of Mechanical EngineeringAnna University Chennai 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2009年第18卷第4期

页      码：358-363页

摘      要：This paper analyzes the effects of nanoporous surface on heat transfer temperaments of assorted thermal conductingmaterials. A phenomenal proposal of wielding the surface roughness to ameliorate the heat transfer ratehas been discovered. The maximum increase of heat transfer rate procured by nanoporous layers is 133.3% higherthan the polished bare metals of surface roughness 0.2μm. This plays an imperative role in designing compact refrigerationsystems, chemical and thermal power plants. Experimental results picture a formidable upswing of58.3% heat transfer in chemically etched metals of surface roughness 3 μm, 133.3% in nanoporous surface of porosity75-95 nm formed by electrochemical anodization, and porosity of 40-50 nm formed by spray pyrolysis increasesthe heat transfer by 130%. Effects of porosity, flow velocity and scaling on the energy transfer are alsoscrutinized. This paper also analyzes the multifarious modes of nanoporous fabrication, to contrive both prodigiousand provident system.

主 题 词：纳米多孔结构 强化传热 喷雾热解 阳极氧化 实验 表面粗糙度 制冷系统设计 化学腐蚀 

学科分类：080503[080503] 08[工学] 080501[080501] 0805[工学-能源动力学] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s11630-009-0358-0

馆 藏 号：203348664...