Unsteady numerical simulation of solar chimney power plant system with energy storage layer
Unsteady numerical simulation of solar chimney power plant system with energy storage layer
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DOI：
10.1179/014426010x12682307291380
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发表时间：
2010-02
影响因子：
5.7
通讯作者：
Y. Zheng;T. Ming;Z. Zhou;Xiangfei Yu;H. Wang;Y. Pan;Wei Liu
中科院分区：
文献类型：
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作者：
Y. Zheng;T. Ming;Z. Zhou;Xiangfei Yu;H. Wang;Y. Pan;Wei Liu
摘要本文对带储能层的太阳能烟囱发电系统的性能进行了数值模拟分析。建立了数学模型，描述了集热器、烟囱和储能层的流动和传热机理，以及不同储能材料对太阳辐射的响应，分析了不同太阳辐射对储能材料输出功率的影响。数值模拟结果表明：土壤和砾石都具有合适的热惯性值，可以作为太阳能烟囱系统的储能材料;第二，蓄热层的热容量越大，在晴天的蓄热量越大，可以有效地减小太阳辐射波动引起的烟囱出口参数的变化昼夜循环;第三，能量存储器的温度越高…
Abstract Numerical simulations were carried out to analyse the performance of the solar chimney power plant systems with energy storage layer in this paper. Mathematical models were developed to describe the flow and heat transfer mechanisms of the collector, chimney and the energy storage layer, and the responses of different energy storage materials to the solar radiation, and the effects of these materials on the power output with different solar radiations were analysed. Numerical simulation results show the following: first, soil and gravel both have suitable values of the property of thermal inertia, and they could be used as energy storage material for the solar chimney system; second, energy storage layer with comparatively higher heat capacity can store more energy on sunny days and can thus effectively decrease the variations of the chimney outlet parameters caused by the fluctuations in solar radiation related to the day-night cycle; third, the higher the temperature of the energy storag...