Abstract: Solar thermal system is one of the most widely used technologies of renewable energy presently. In order to further improve the system design and to increase its performance，a deep understanding of the complicated fluid flow and heat transfer in the system components is necessary. The most promising solution to this challenge is the use of computational fluid dynamics (CFD) in combination with particle image velocimetry (PIV)，which will be the future trend in the investigation of solar thermal systems. The aim of this work is to give an overview of the status of the CFD-PIV application in solar thermal systems.

摘要： 综述了CFD-PIV技术应用于太阳热水系统的研究进展，重点阐述了该技术用于提高太阳热水系统热效率的优越性，说明了太阳热水系统是应用最广泛的可再生能源利用技术之一。分析系统内的流体流动状况对于强化太阳热水系统中的对流传热过程、优化系统结构、提高系统热效率，进而指导太阳热水系统的工程设计具有非常重要的意义。利用计算流体力学和粒子图像测速技术相结合来分析流场是化学工程相关研究的发展趋势。