Optical performance analysis of small-scale heliostats field layout of solar power tower system in Malaysia

IF 8 Q1 ENERGY & FUELS

Energy nexus Pub Date : 2025-07-12 DOI:10.1016/j.nexus.2025.100489

Zeshan Aslam, Syed Ihtsham Ul-Haq Gilani, Taib Iskandar Mohamad, Masdi Muhammad, Kehinde Temitope Alao

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引用次数: 0

Abstract

Solar power tower (SPT) systems are one of the promising technologies for concentrated solar energy collection efficiently. This study presents the optical performance study of a small-scale heliostat field layout developed at Universiti Teknologi PETRONAS, Malaysia. Ray-tracing simulations via Tonatiuh software were conducted to analyze the receiver's solar concentration. MATLAB was employed to quantify the optical losses due to cosine loss, shading, blocking, spillage, and reflectivity. The simulation results showed a very good agreement between Tonatiuh and MATLAB with a maximum deviation of 7 %. The power concentration was maximum between 11 AM and 3 PM, with the peak at 1 PM. The heliostat that was due north of the tower had the highest cosine efficiency and power. The optical efficiency of the system varied throughout the year and was at its maximum of 60.94 % in December. The results show the effect of heliostat field configuration and optical loss management on field performance and provide insights for small-scale SPT field optimization under equatorial conditions.

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马来西亚太阳能发电塔系统小型定日镜场布置的光学性能分析

太阳能发电塔（SPT）系统是一种极具发展前景的高效聚光太阳能收集技术。本研究介绍了马来西亚PETRONAS大学开发的小型定日镜场布局的光学性能研究。通过Tonatiuh软件进行了光线追踪模拟，分析了接收器的太阳浓度。利用MATLAB对余弦损耗、遮光、遮挡、溢出和反射率造成的光学损耗进行量化。仿真结果表明，Tonatiuh与MATLAB的结果吻合良好，最大偏差为7%。能量集中在上午11点至下午3点最大，下午1点达到峰值。位于塔正北的定日镜具有最高的余弦效率和功率。该系统的光学效率全年变化，在12月达到60.94%的最大值。结果表明定日镜现场配置和光损耗管理对现场性能的影响，并为赤道条件下小规模SPT现场优化提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy nexus Energy (General), Ecological Modelling, Renewable Energy, Sustainability and the Environment, Water Science and Technology, Agricultural and Biological Sciences (General)

CiteScore

7.70

自引率

0.00%

发文量

审稿时长

109 days