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Fluid dynamics analysis for different photovoltaic panel locations in solar chimney

机译：太阳烟囱中不同光伏面板位置的流体动力学分析

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摘要

Nowadays, technologies and methods for using solar energy are presented in a wide range of different systems by researchers. One of the solutions to improve the performance of solar systems, is the idea of making hybrid solar system, and extensive works have been done by many researchers. Photovoltaic (PV) panels are among the most popular systems to produce electricity from sunlight, while solar chimney is another method for utilizing the solar energy. In this paper, a new model of hybrid PV panels and solar chimneys has been designed, which uses the airflow created below the collector of solar chimney for cooling of the PV panels. The dissipated thermal energy of the PV panels is used for heating the air under the collector. In this modeling, two main factors as the location and width of the PV panels in the solar chimney were investigated. Modeling was performed for four different modes of combining the hybrid PV panels and solar chimney in three different widths of 70, 50, 30 cm for all four modes. The best result was obtained for the hybrid of PV panels and solar chimney for placing 50 cm wide PV s, instead of a transparent collector. In this case, the average PV panels temperature was 5 degrees C lower than the average PV panels temperature of the non-hybrid mode of solar chimney. This decrease in temperature would increase the efficiency of the PV panels by 1%. Furthermore, in this mode, the maximum flow velocity shows 0.2 m/s reduction in comparison to the transparent collector.
机译：如今，研究人员在各种各样的系统中介绍了使用太阳能的技术和方法。制造混合太阳能系统的想法是提高太阳能系统性能的解决方案之一，许多研究人员已进行了大量工作。光伏（PV）面板是最流行的利用太阳光发电的系统，而太阳能烟囱是利用太阳能的另一种方法。在本文中，设计了一种新的混合光伏面板和太阳能烟囱模型，该模型利用在太阳能烟囱集热器下方产生的气流来冷却光伏面板。 PV板散发的热能用于加热集热器下方的空气。在此模型中，研究了两个主要因素，如太阳能烟囱中光伏电池板的位置和宽度。对四种不同模式进行了建模，这些模式将混合光伏面板和太阳能烟囱以三种不同的宽度（70、50、30 cm）针对所有四种模式进行了组合。对于光伏板和太阳能烟囱的混合体，放置50 cm宽的PV s而不是透明的集热器，可获得最佳结果。在这种情况下，平均光伏面板温度比太阳能烟囱非混合模式的平均光伏面板温度低5摄氏度。温度的这种降低将使PV面板的效率提高1％。此外，在这种模式下，与透明收集器相比，最大流速降低了0.2 m / s。

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