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首页> 外文期刊>Energy Conversion & Management >Experimental investigation on heat transfer enhancement due to V-shaped perforated blocks in a rectangular duct of solar air heater
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Experimental investigation on heat transfer enhancement due to V-shaped perforated blocks in a rectangular duct of solar air heater

机译：太阳能热水器矩形风道内V形穿孔块增强传热的实验研究

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摘要

In this work, the effect of geometrical parameters of the V-shaped perforated blocks on heat transfer and flow characteristics of rectangular duct, has been investigated experimentally. The experimental investigation encompassed the geometrical parameter namely, relative blockage height (e/H) of 0.4-1.0, relative pitch ratio (P/e) of 4-12 and open area ratio (β) of 5-25% at a fixed angle of attack (α) of 60°. The effect of V-shaped perforated blockages has been investigated for the range of Reynolds number from 2000 to 20,000. The maximum enhancement in Nusselt and friction factor has been found to be 6.76 and 28.84 times to that of smooth duct, respectively. Thermohydraulic performance of V-shaped perforated blockages is also compared to that of V-shaped solid blockages for same geometrical parameters.
机译：在这项工作中，已通过实验研究了V形穿孔块的几何参数对矩形管的传热和流动特性的影响。实验研究包括几何参数，即固定角度下的相对阻塞高度（e / H）为0.4-1.0，相对螺距比（P / e）为4-12和开孔率（β）为5-25％攻角（α）为60°。在2000到20,000的雷诺数范围内，已经研究了V形穿孔的堵塞的影响。已发现，努塞尔特和摩擦系数的最大增强分别是光滑管道的6.76和28.84倍。对于相同的几何参数，还将V形穿孔的堵塞物与V形固体堵塞物的热工液压性能进行了比较。

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  • 来源
    《Energy Conversion & Management》 |2014年第5期|374-383|共10页
  • 作者

    Tabish Alam; R.P. Saini; J.S. Saini;

  • 作者单位

    Alternate Hydro Energy Centre, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India;

    Alternate Hydro Energy Centre, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India;

    Mechanical & Industrial Engineering Department, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Solar air heater; Nusselt number; Friction factor; V-shaped blocks; Perforation;

    机译：太阳能空气加热器;努塞尔数摩擦系数;V形块;穿孔;

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