The solar chimney power plant (SCPP) is a solution to convert solar radiation into electrical energy. The optimization of the SCPP setup is essential to obtain a good ratio between the cost of the installation and the generated power. This paper presents a new design of a solar chimney power plant which is characterized by a combination of a convergent collector output and a divergent chimney bottom. This technical solution favors the overall performance and boosts the produced power of the SCPP. Comparing the proposed designs with a conventional prototype, the generated power could be raised by 32%. Indeed, this paper presents the performance of the solar chimney power plant while varying the chimney diameter. For each configuration, the features of the air flow characteristics such as the air temperature, the air velocity are illustrated and disputed. Results showed that the diameter of the chimney is an influential parameter in the optimization of the SCPP, since the diameter of the collector is restraint by the allowed space. Computational findings are confirmed by the use of experimental measurements which were recorded in South Tunisia, North Africa.

中文翻译：

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太阳能烟囱的研究，其特点是收集器输出会聚，烟囱底部发散

太阳能烟囱发电厂 (SCPP) 是一种将太阳辐射转化为电能的解决方案。SCPP 设置的优化对于获得安装成本与发电功率之间的良好比率至关重要。本文介绍了一种太阳能烟囱发电厂的新设计，其特点是集热器输出和烟囱底部发散相结合。该技术方案有利于提高SCPP的整体性能并提高其发电量。将所提出的设计与传统原型进行比较，产生的功率可以提高 32%。事实上，本文介绍了太阳能烟囱发电厂在改变烟囱直径时的性能。对于每种配置，气流特性的特征，例如空气温度，空气速度被说明和争议。结果表明，由于集热器的直径受到允许空间的限制，烟囱的直径是影响SCPP优化的参数。计算结果通过使用在北非南部突尼斯记录的实验测量得到证实。