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Optimization of Pin-Fins for a Heat Exchanger by Entropy Generation Minimization and Constructal Law

机译：熵产生最小化和构造定律优化换热器销钉

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摘要

Pin-fins are considered as one of the best elements for heat transfer enhancement in heat exchangers. In this study, the topology of pin-fins (length, diameter, and shape) is optimized based on the entropy generation minimization (EGM) theory coupled with the constructal law (CL). Such pin-fins are employed in a heat exchanger in a sensible thermal energy storage (TES) system so as to enhance the rate of heat transfer. First, the EGM method is used to obtain the optimal length of pin-fins, and then the CL is applied to get the optimal diameter and shape of pin-fins. Reliable computational fluid dynamics (CFD) simulations of various constructal pin-fin models are performed, and detailed flow and heat transfer characteristics are presented. The results show that by using the proposed system with optimized pin-fin heat exchanger the stored thermal energy can be increased by 10.2%.
机译：针翅片被认为是增强热交换器传热的最佳元素之一。在这项研究中，基于熵生成最小化（EGM）理论和构造定律（CL）来优化针鳍的拓扑（长度，直径和形状）。这种针状翅片被用于显热能存储（TES）系统中的热交换器中，以提高热传递速率。首先，使用EGM方法获得最佳的销钉长度，然后使用CL来获得最佳的销钉直径和形状。进行了各种结构针翅模型的可靠计算流体动力学（CFD）仿真，并给出了详细的流动和传热特性。结果表明，通过使用带有优化的针翅式热交换器的拟议系统，可以将存储的热能提高10.2％。

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  • 来源
    《Journal of Heat Transfer》 |2015年第6期|061901.1-061901.9|共9页
  • 作者

    Gongnan Xie; Yidan Song; Masoud Asadi; Giulio Lorenzini;

  • 作者单位

    Engineering Simulation and Aerospace Computing (ESAC), School of Mechanical Engineering, Northwestern Polytechnical University, P.O. Box 552, Xi'an 710072, Shaanxi, China;

    Engineering Simulation and Aerospace Computing (ESAC), School of Mechanical Engineering, Northwestern Polytechnical University, P.O. Box 552, Xi'an 710072, Shaanxi, China;

    Department of Mechanical Engineering, Azad Islamic University Science and Research Branch, Tehran 1615918683, Iran;

    Department of Industrial Engineering, University of Parma, Parco Area delle Scienze, 181A, Parma 43124, Italy;

  • 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

    pin-fin; entropy generation; constructal law; optimization; computational fluid dynamics;

    机译：针翅熵产生构造法优化;计算流体动力学;

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