Thermal performance investigation of staggered and inline pin fin heat sinks using water based rutile and anatase TiO2 nanofluids

被引：148

作者：

Ali, Hafiz Muhammad ^{[1
,2
]}

Arshad, Waqas ^{[2
]}

机构：

[1] Univ Calif, Dept Mech Engn, Merced, CA 95340 USA

[2] Univ Engn & Technol, Dept Mech Engn, Taxila 47050, Pakistan

来源：

ENERGY CONVERSION AND MANAGEMENT | 2015年 / 106卷

关键词：

Staggered/inline pin fins; Minichannel; Rutile/Anatase nanofluids; Nusselt number; Enhancement ratio; PRESSURE-DROP; OPTIMIZATION; CONDUCTIVITY; FLOW;

D O I：

10.1016/j.enconman.2015.10.015

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Square pin fin minichannel heat sinks are experimentally investigated in order to find heat transfer performance of staggered and inline pin fin heat sinks. TiO2(Anatase)/H2O and TiO2(Rutile)/H2O nanofluids in volumetric concentration of 4.31% and 3.99% respectively are tested and their results are compared with distilled water. Experimentation has been performed in steady state laminar flow regime. Experimental setup is validated by comparing the results of distilled water using staggered geometry with theoretical model. The effect of geometry is also evident on enhancement ratio. Consequently, greater heat transfer enhancement is observed in staggered pin fin heat sink as compared to inline pin fin heat sink using same fluid. TiO2(Rutile)/H2O nanofluids show better thermal performance than TiO2(Anatase)/H2O nanofluids for both tested geometries. Uniform heat flux is applied at bottom side of heat sink by Mica strip heater. At a power of 192W, minimum base temperature obtained is 29.4 degrees C using TiO2(Rutile)/H2O nanofluid with staggered pin fin heat sink. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：793 / 803

页数：11

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