Assisted convective heat transfer and entropy generation in a solar collector filled with nanofluid

IF 1.2 Q3 ENGINEERING, MARINE

Journal of Naval Architecture and Marine Engineering Pub Date : 2016-12-29 DOI:10.3329/JNAME.V13I2.27774

R. Nasrin, M. A. Alim, M. Hasanuzzzaman

引用次数: 3

Abstract

Heat transfer phenomena of flat plate solar collector filled with different nanofluids has been investigated numerically. Galerkin’s Finite Element Method is used to solve the problem. Heat transfer rate, average bulk temperature, average sub-domain velocity, outlet temperature, thermal efficiency, mean entropy generation and Bejan number has been investigated by varying the solid nanoparticle volume fraction of water/Cu, water/Ag and water/Cu/Ag nanofluids from 0% to 3%. It is found that the solid nanoparticle volume fraction has great effect on heat transfer phenomena. It is observed that the increases of the solid volume fraction (up to 2%) enhances the heat transfer rate and collector efficiency where after 2% the rate of change almost constant. Higher heat transfer rate and collector efficiency has been obtained 19% and 13% for water/Ag nanofluid respectively.

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纳米流体在太阳能集热器中的辅助对流传热和熵生成

对不同纳米流体填充的平板太阳能集热器的传热现象进行了数值研究。采用伽辽金有限元法求解该问题。通过改变水/Cu、水/Ag和水/Cu/Ag纳米流体的固体纳米颗粒体积分数从0%到3%，研究了传热速率、平均体温、平均子域速度、出口温度、热效率、平均熵产和贝让数。研究发现，固体纳米颗粒体积分数对传热现象有很大影响。观察到，固体体积分数的增加(高达2%)提高了传热速率和集热器效率，而在2%之后，变化率几乎不变。水/银纳米流体的传热率和集热器效率分别为19%和13%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Naval Architecture and Marine Engineering ENGINEERING, MARINE-

CiteScore

2.50

自引率

5.60%

发文量

审稿时长

20 weeks

期刊介绍： TJPRC: Journal of Naval Architecture and Marine Engineering (JNAME) is a peer reviewed journal and it provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; under-water acoustics; satellite observations; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; aqua-cultural engineering; sub-sea engineering; and specialized water-craft engineering. International Journal of Naval Architecture and Ocean Engineering is published quarterly by the Society of Naval Architects of Korea. In addition to original, full-length, refereed papers, review articles by leading authorities and articulated technical discussions of highly technical interest are also published.