槽式集热器布置方式的比较研究

Comparison Study on Layout Modes of Parabolic Trough Collectors

集热器的布置方式是槽式太阳能热发电优化设计中的重要参数。本文采用SAM软件,选取我国四个地区的太阳能资源数据,研究不同纬度条件下集热器的布置方式(水平布置方式、高差布置方式、集热器间距)对槽式太阳能热发电集热系统性能的影响。结果表明集热器水平布置方式下随纬度降低南北布置在年集热量上的优势越来越明显,适当将南北布置的集热器自北向南倾斜有利于进一步提高集热场的年集热量。此外,对于集热器南北布置或东西布置在工程设计过程中均应选择合适的集热器间距。

The layout of the collector is an important parameter in the optimum design of the trough solar thermal power generation.In this paper,solar energy resource datas of four regions in China were selected and the SAM software was used to study the influence of different layout modes (horizontal layout method,elevation different layout method,collector spacing) on thermal performance of solar collecting system.The results show that with the decrease of latitude in the horizontal layout method,the advantage of the annual heat collection of the north-south layout is more obvious,and tilting the collectors from north to south can further improve the annual heat collection.In addition,suitable collector spacing should be selected for the north-south or east-west collector layout methods in the engineering design process.