The Effects of Geometric Factors on Power Generation Performance in Solar Chimney Power Plants

作     者：Setayesh, Hesam Kasaeian, Alibakhsh Najafi, Mohammad Madani Pour, Mohammadreza 

作者机构：Department of Mechanical Electrical Power and Computer Engineering Science and Research Branch Islamic Azad University Tehran Iran College of Interdisciplinary Science and Technology University of Tehran Tehran Iran 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Geometry 

摘      要：Given that generating electricity using fossil fuels causes environmental pollution and greenhouse effects, replacing fossil fuels by renewable energies can be a potential solution. This research aims to create an admissible source for specifying the relation between the plant s output power and specified geometrical parameters unique to each simulated chimney dimension. In the current study, the solar chimney output power has been studied considering 49 solar chimneys, including different collector diameters, chimney heights, and chimney diameters. The study employs the Ansys-CFX to simulate the numerical model for the unsteady K-E turbulent flow for a vast number of geometries. The obtained results indicate that the velocity as the main factor in generating the output power has significantly improved by elevating the collector radius. The output power increased up to 50 % by elevating the collector radius and around 30% by enhancing the chimney heights which cause an increase in airflow, temperature differentials. Chimney radius had the least impact on solar chimney performance. The optimum collector height ratio to collector radius is around 1% to increase the output. Moreover, increasing the chimney height has generally ascended the power plant system. The study results were verified with the available experimental setups. © 2024, The Authors. All rights reserved.