Numerical simulation analysis of dust deposition characteristics and effects on parabolic trough solar collector

IF 4.2 2区 工程技术 Q1 ENGINEERING, CIVIL
Kai Zhang , Jianjin Tian , Benli Liu , Hailong Zhang , Zhenghui Wang , Tao Wang
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引用次数: 0

Abstract

Desert regions are abundant in solar radiation, making them excellent locations for constructing parabolic trough solar thermal power plants. Nevertheless, the characteristic windy and dusty conditions of these areas pose significant risks to the structural stability and operational efficiency of parabolic trough solar collectors. In this study, airflow dynamics and dust deposition around parabolic trough solar collectors are analyzed through three-dimensional numerical simulations. The study shows that when the inclination angle is 90° or less, the dust deposition rate peaks at 3.83 % at a 45° angle, averaging an increase of 6.06 % for dust particles sized between 1 and 50 μm. In contrast, when the inclination exceeds 90°, the deposition rate curve becomes much flatter, with an average increase of only 0.93 %. Furthermore, the dust deposition rate on the collector's surface diminishes as wind speed increases, yet it escalates with increases in both wind angle and particle size. Correlation analysis indicates that the most significant factors influencing dust deposition, in descending order of impact, are particle size, wind angle, inclination angle, and wind speed, with correlation coefficients of 0.79, −0.16, 0.14 and −0.049, respectively. This study offers substantial support for the structural design and dust control measures in desert environments.
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来源期刊
CiteScore
8.90
自引率
22.90%
发文量
306
审稿时长
4.4 months
期刊介绍: The objective of the journal is to provide a means for the publication and interchange of information, on an international basis, on all those aspects of wind engineering that are included in the activities of the International Association for Wind Engineering http://www.iawe.org/. These are: social and economic impact of wind effects; wind characteristics and structure, local wind environments, wind loads and structural response, diffusion, pollutant dispersion and matter transport, wind effects on building heat loss and ventilation, wind effects on transport systems, aerodynamic aspects of wind energy generation, and codification of wind effects. Papers on these subjects describing full-scale measurements, wind-tunnel simulation studies, computational or theoretical methods are published, as well as papers dealing with the development of techniques and apparatus for wind engineering experiments.
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