太阳能光伏/热（PV/T）技术的研究进展

摘要

太阳能光伏/热（PV/T）技术是将光伏和光热结合在一起，可实现较高的太阳能利用率。本文首先简要介绍了PV/T集热器的概念、基本原理及分类。然后从PV/T集热器结构和运行参数两方面综述了近几年来国内外PV/T集热器的相关研究，对比分析了水冷型、制冷剂型和热管型3种类型PV/T的优缺点。概述了目前常用的PV/T性能评估和经济性分析的方法。最后指出了当前的PV/T集热器存在诸如结构复杂、工质渗漏、初始投资大等问题，并且缺少对其长期的动态性能研究。未来需对现有结构作进一步优化，同时开发新型PV/T集热器。%This reivew briefly introduced the concept of the solar photovoltaic/thermal (PV/T),its operation theory and classification,summarized research progresses on PV/T collectors’ structures and operating parameters analyzed PV/T-water,PV/T-refrigerant and PV/T-heat pipe,and described the common approaches of performance and economic evaluation. This review also identified the existing problems,such as complicated structures,medium leaking,large intial investment,and lack of studies of long-term dynamic performance. Further optimizations of current PV/T collectors’ structures and development of new PV/T collectors are needed for future applications of this technology.