抛物槽式太阳能集热器光热耦合特性数值模拟仿真与分析

Numerical simulation and analysis of the solar-thermal coupling characteristics for parabolic trough solar collector

抛物槽式太阳能聚光集热作为重要的绿色节能技术,已广泛应用于热力发电和工业生产等领域,能够有效降低化石燃料消耗和CO_(2)排放。然而复杂的光热耦合运行特性直接影响太阳能集热器的能量传递过程,对此,建立了基于导热油传热工质的抛物槽式太阳能聚光集热数值分析模型,以研究太阳能辐照强度和集热器倾角跟踪调节等多因素对集热利用效率和光热耦合特性的影响,分析得到集热管内工质流场和温度场的分布特性,将为优化抛物槽式太阳能集热器运行调控和开展太阳能热利用等相关理论教学及实践创新提供指导。

Parabolic trough solar collection as an important green and efficient energy utilization technology,has been widely employed in the areas of thermal power generation and industrial production,which can contribute to achieving less fossil fuel consumption and CO_(2) emission.While the complex solar-thermal coupling operation characteristics evidently influence the heat transfer process in the solar receiver.Therefore,the numerical model of the solar concentration by the parabolic trough solar collector based on the heat transfer fluid of the synthetic oil is established,in order to study the effects of multiple factors such as solar irradiation intensity and tracking dip angle adjustment of the collector on the heat collection utilization efficiency and solar-thermal coupling characteristics,and the distribution characteristics of the fluid’s velocity and temperature fields in the heat collecting tube are also obtained.The achieved results contribute to optimizing the operation regulation of parabolic trough solar collector,and providing guidance for theory teaching and practical innovation in solar thermal utilization.