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Experimental and numerical studies of the pressure drop in ceramic foams for volumetric solar receiver applications

机译：用于体积太阳能接收器的陶瓷泡沫中压降的实验和数值研究

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摘要

This paper presents experimental and numerical studies of the pressure drop in ceramic foams for solar air receiver applications. There are three main aims in this study. The first is to measure the pressure drop in the studied ceramic foams, and to build an empirical model based on the experimental results and a parametric numerical simulation. The second aim is to study flow field characteristics in the ceramic foams, especially in the vicinity of the interface. The third is to study the pressure drop characteristics of two modified structures (by manufacturing holes on the ceramic foams) that are expected to decrease the pressure drop in ceramic foams, but maintain good heat transfer properties. The experimental results from the samples, including two modified structures, along with the simulation results, show that the pressure drop in the ceramic foams follows a modified Darcy relationship. The experimental results also show that the two modified structures dramatically decrease the pressure drop (with pressure drop decreases up to 70% at a superficial velocity of 5 m/s). Based on both the experimental and the simulation results, a generalized model for predicting the pressure drop in ceramic foams was proposed.
机译：本文介绍了用于太阳能空气接收器应用的陶瓷泡沫中压降的实验和数值研究。这项研究有三个主要目标。首先是测量所研究的陶瓷泡沫中的压降，并根据实验结果和参数数值模拟建立经验模型。第二个目的是研究陶瓷泡沫中的流场特性，尤其是在界面附近。第三是研究两种改性结构的压降特性（通过在陶瓷泡沫上制造孔），这些结构有望减少陶瓷泡沫的压降，但保持良好的传热性能。样品的实验结果（包括两个修改后的结构）以及仿真结果表明，陶瓷泡沫中的压降遵循修改后的达西关系。实验结果还表明，这两种改性结构显着降低了压降（在5 m / s的表观速度下，压降降低了70％）。基于实验和仿真结果，提出了一种预测陶瓷泡沫压降的通用模型。

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  • 来源
    《Applied Energy》 |2010年第2期|504-513|共10页
  • 作者

    Zhiyong Wu; Cyril Caliot; Fengwu Bai; Gilles Flamant; Zhifeng Wang; Jinsong Zhang; Chong Tian;

  • 作者单位

    The Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering, CAS, Beijing, China Processes, Materials, and Solar Energy Laboratory, PROMES CNRS, 7 Rue du Four Solaire, 66120 Font-Romeu, France;

    Processes, Materials, and Solar Energy Laboratory, PROMES CNRS, 7 Rue du Four Solaire, 66120 Font-Romeu, France;

    The Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering, CAS, Beijing, China;

    Processes, Materials, and Solar Energy Laboratory, PROMES CNRS, 7 Rue du Four Solaire, 66120 Font-Romeu, France;

    The Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering, CAS, Beijing, China No. 6 Beiertiao, Zhongguancun, 100190 Beijing, China;

    Institute of Metal Research, CAS, 72 Wenhua Road. Shenyang 110016, China;

    Institute of Metal Research, CAS, 72 Wenhua Road. Shenyang 110016, China;

  • 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

    porous media; tetrakaidecahedral model; penetrability; volumetric solar air receiver; computational fluid dynamics;

    机译：多孔介质四面体模型渗透性容积式太阳能空气接收器;计算流体动力学;

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