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Computational investigation of solar updraft tower for power generation in sultanate of Oman
Indian Journal of Engineering & Materials Sciences Pub Date : 2020-11-24
Afzal Husain, Mohammad Zunaid, Mohammed AL Brashdi, Fahad Al Maqbali, Emad Al-Jabri, Abdulmonem Al-Mahrizi

The current study is aimed at harnessing solar power through solar updraft tower (SUT) and explored the local environmental factors conducive to SUT installation. The SUT collects solar insolation to raise the air velocity, which is then allowed to pass through a ducted turbine. An alternator is installed with the air turbine to generate electricity. The study presents a performance analysis of SUT based on local thermal radiation and wind velocity. Three-dimensional numerical modelling of SUT is carried using computational fluid dynamics (CFD) solver. The model is validated with the experimental results available in the open literature. The collector temperature profile obtained through CFD modelling matches well with the experimental results. A maximum temperature rise of 20 ºC was ob-served in the collector modelled and solved numerically using CFD solver. The air velocity increases as the flow move from the collector periphery to the center of the SUT and reach to its maximum just before the center of the SUT. However, for the chimney, the temperature was observed to be increased continuously due to its continuous heating through the chimney walls, which receives solar radiation. The performance of SUT is examined with the change in inlet air velocity based on the local conditions in the Sultanate of Oman.

中文翻译:

阿曼苏丹国用于发电的太阳能上流塔的计算研究

当前的研究旨在通过太阳能上升塔(SUT)来利用太阳能,并探索了有助于SUT安装的当地环境因素。SUT收集日照以提高空气速度,然后允许其通过管道涡轮机。交流发电机与空气涡轮机一起安装以发电。该研究提出了一种基于局部热辐射和风速的SUT性能分析。使用计算流体动力学(CFD)求解器进行SUT的三维数值建模。通过公开文献中提供的实验结果验证了该模型。通过CFD建模获得的集热器温度曲线与实验结果非常吻合。在收集器中观察到最高温度上升了20ºC,并使用CFD求解器对其进行了数值求解。随着气流从收集器外围移动到SUT的中心并在SUT的中心之前达到其最大值,空气速度会增加。但是,对于烟囱,由于其不断通过接收太阳辐射的烟囱壁加热,温度被观察到持续升高。根据阿曼苏丹国的当地情况,通过进气速度的变化来检查SUT的性能。观察到温度不断升高,这是由于它不断通过接收太阳辐射的烟囱壁加热。根据阿曼苏丹国的当地情况,通过进气速度的变化来检查SUT的性能。观察到温度不断升高,这是由于它不断通过接收太阳辐射的烟囱壁加热。根据阿曼苏丹国的当地情况,通过进气速度的变化来检查SUT的性能。
更新日期:2020-11-25
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