Heat transfer enhancement in a helically coiled convergent and divergent tube heat exchanger with alumina oxide nanofluid

IF 1.1 4区工程技术 Q4 THERMODYNAMICS Thermal Science Pub Date : 2023-01-01 DOI:10.2298/tsci221205140s

Nandhakumar Shankar, Perumalsamy Sethusundaram Parambakkattur, M. Chandran

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Abstract

In this investigation, the analysis of the heat transfer coefficient of a shell, helically coiled convergent-divergent tube heat exchanger has been carried out by utilizing Al2O3/water nanofluid. The nanofluid was prepared using a two-stage technique with proportions of 0.1vol%, 0.3vol%, and 0.5vol%. The inner heat transfer coefficient, overall heat transfer coefficient, and Nusselt number were analyzed and it found that the heat transfer coefficient is increased, with increase of inner dean number and particle volume concentration. The experimental tests were carried out in the range of 1100

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氧化氧化铝纳米流体对螺旋盘管换热器传热的增强作用

采用纳米Al2O3/水流体，对壳式螺旋盘管换热器的换热系数进行了分析。采用两段工艺制备纳米流体，分别为0.1vol%、0.3vol%和0.5vol%。对内换热系数、总换热系数和努塞尔数进行了分析，发现传热系数随着内dean数和颗粒体积浓度的增加而增大。试验在1100

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来源期刊

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.