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首页> 外文期刊>Journal of nano research >Characterization of Al2O3/Water Nanofluid Through Shell and Tube Heat Exchangers over Parallel and Counter Flow
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Characterization of Al2O3/Water Nanofluid Through Shell and Tube Heat Exchangers over Parallel and Counter Flow

机译：Al2O3 /水纳米流体通过壳管式换热器平行和逆流的表征

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摘要

Nanotechnology has become one of the fastest growing scientific and engineering disciplines. Nano fluids have been established to possess enhanced thermal and physical properties such as thermal conductivity, thermal diffusivity, viscosity and convective heat transfer coefficients. The aim of this research article is to analyze the overall heat transfer coefficient by doing an experimental investigation on the convective heat transfer and flow characteristics of a nano fluid. In this research, an attempt was made for the nano fluid consisting of water and 1% volume concentration of Al2O3/water Nano fluid flowing in a parallel flow, counter flow in shell and tube heat exchanger under laminar flow condition. The 50nm diameter Al(2)O(3)nanoparticles are used in this investigation and was found that the overall heat transfer coefficient and convective heat transfer coefficient of nano fluid to be slightly higher than that of the base liquid at same mass flow rate and inlet temperature. Three samples of dissimilar mass flow rates have been identified for conducting the experiments and their results are continuously monitored and reported. The experimental analysis results were concluded that the heat transfer and overall heat transfer coefficient enhancement is possible with increase in the mass flow rate of fluid and Al2O3/water nano fluid on a comparative basis.
机译：纳米技术已成为发展最快的科学和工程学科之一。已经建立了具有增强的热和物理性质，例如导热率，热扩散率，粘度和对流热传递系数的纳米流体。本文的目的是通过对纳米流体的对流传热和流动特性进行实验研究来分析整体传热系数。在这项研究中，尝试了由水和1％体积浓度的Al2O3 /水组成的纳米流体在层流条件下在壳管式换热器中以平行流，逆流流动的方式流动。在这项研究中使用直径为50nm的Al（2）O（3）纳米颗粒，发现在相同质量流量和相同质量流量下，纳米流体的总传热系数和对流传热系数略高于基础液体。入口温度。已经确定了三种质量流量不同的样品用于进行实验，并不断监测和报告其结果。实验分析结果表明，在比较的基础上，随着流体和Al2O3 /水纳米流体的质量流量的增加，传热和整体传热系数的提高是可能的。

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