New correlations for determination of optimum slope angle of solar collectors

被引：0
作者：
Khosravi A. [1 ]
Rodriguez O.R.S. [2 ]
Talebjedi B. [1 ]
Laukkanen T. [1 ]
Pabon J.J.G. [3 ]
Assad M.E.H. [4 ]
机构：
[1] Department of Mechanical Engineering, School of Engineering, Aalto University, Espoo
[2] Graduate Program in Mechanical Engineering Federal University of Minas Gerais, Belo Horizonte
[3] Institute of Mechanical Engineering, Federal University of Itajubá, Itajubá
[4] Sustainable and Renewable Energy Engineering Department, University of Sharjah, Sharjah
来源：
Energy Engineering: Journal of the Association of Energy Engineering | 2020年 / 117卷 / 05期
关键词：
Flat-plate collector; Linear regression; Optimum slope angle; Photovoltaic system; Slope angle; Solar energy;
D O I：
10.32604/EE.2020.011024
中图分类号：
学科分类号：
摘要：
The energy coming from solar radiation could be harvested and trans-formed into electricity through the use of solar-thermal power generation and photovoltaic (PV) power generation. Placement of solar collectors (thermal and photovoltaic) affects the amount of incoming radiation and the absorption rate. In this research, new correlations for finding the monthly optimum slope angle (OSA) on flat-plate collectors are proposed. Twelve equations are developed to calculate the monthly OSA by the linear regression model, for the northern and the southern hemisphere stations from 15° to 55° and –20° to –45°, respectively. Also, a new equation for calculating the yearly tilt angle is developed and compared with several other calculation methods from the literature. Results confirm a 20% increase in solar energy absorption by adjusting the collectors’ tilt angle in monthly time periods. This is while the adjusted collectors with the yearly optimum slope angle receive approximately 7% higher solar radiation compared to the horizontal collectors. Furthermore, the proposed equations outperformed the other calculation methods in the literature. © 2020, Tech Science Press. All rights reserved.
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页码：249 / 265
页数：16
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