Chimney shape numerical study for solar chimney power generating systems

Chimney shape numerical study for solar chimney power generating systems
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太阳能烟囱发电系统烟囱形状数值研究

DOI:
10.1002/er.1910
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发表时间:
2013-03
影响因子:
4.6
通讯作者:
Liu W
Liu W
中科院分区:
工程技术3区
文献类型:
--
作者:
Ming T Z;Richter R K;Meng F L;Pan Y;Liu W

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太阳能烟囱(SC)发电技术受到大量研究人员的关注,但对烟囱结构的研究却很少。以10MW SC系统为例,建立了系统流体流动、传热和输出功率特性的物理和数学模型。基于等烟囱底部截面积或等烟囱表面积等约束条件,分析了三种不同烟囱配置的几种尺寸对烟囱出口空气温度和风速、系统输出功率和效率的影响,并研究了圆柱形烟囱的高径比(H/D)对系统性能的影响。经过对系统输出功率和效率的综合分析,数值模拟证明,圆柱形烟囱是三种基本配置中的最佳选择,其最佳H/D值范围为6至8。 版权所有© 2011 John Wiley & Sons, Ltd.
A large number of researchers have paid great attention to solar chimney (SC) power generating technology, but only a few have studied the chimney configuration. Taking a 10 MW SC system as an example, the physical and mathematical models illustrating the fluid flow, heat transfer and output power features of the system are established. Based on constraints such as equal chimney bottom section area or equal chimney surface area, the impact of several sizes of three different chimney configurations upon the chimney outlet air temperature and velocity, system output power and efficiency is analyzed and the influence of the height‐to‐diameter ratio (H/D) of the cylindrical chimney on system performance is studied as well. After a comprehensive analysis of system output power and efficiency, it is proved by the numerical simulation that the cylindrical chimney would be the best choice among the three basic configurations, whose optimum H/D value ranges from 6 to 8. Copyright © 2011 John Wiley & Sons, Ltd.
DOI: 10.1260/026635109788251449
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