Evaluation of operational control strategies applicable to solar chimney power plants
Evaluation of operational control strategies applicable to solar chimney power plants
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DOI：
10.1016/j.solener.2009.11.009
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发表时间：
2010-02
期刊：
影响因子：
6.7
通讯作者：
M. Bernardes;T. V. Backström
中科院分区：
文献类型：
--
作者：
M. Bernardes;T. V. Backström
数值模拟研究了两种适用于太阳能烟囱发电厂的功率输出控制方案的性能。无论是体积流量或涡轮机的压力降被用作独立的控制变量。在文献中发现的涡轮机压降与压力势的最佳比值在2/3和0.97之间变化。结果表明，最佳的比例是不是恒定的，在整个一天，它是依赖于应用到集热器的传热系数。这项研究是对理解太阳能烟囱发电厂的性能和控制的贡献，并可能是有用的太阳能烟囱涡轮机的设计。
Numerical simulations are carried out to study the performance of two schemes of power output control applicable to solar chimney power plants. Either the volume flow or the turbine pressure drop is used as independent control variable. Values found in the literature for the optimum ratio of turbine pressure drop to pressure potential vary between 2/3 and 0.97. It is shown that the optimum ratio is not constant during the whole day and it is dependent of the heat transfer coefficients applied to the collector. This study is a contribution towards understanding solar chimney power plant performance and control and may be useful in the design of solar chimney turbines.