中国部分城市太阳能蒸汽热发电系统性能分析

Performance Analysis of Direct Steam Generation Trough Solar Energy Generation System in Some Major Cities of China

以饱和蒸汽循环太阳能热发电系统为研究对象,对太阳能热电系统进行了理论-模型-模拟的一体化研究.根据中国30个省会城市的气象数据,模拟运行了所设计的槽式热发电系统,计算了所设计的各地热发电系统全年的运行情况,分析了系统总效率随昼夜、季节、年度以及纬度的变化,探讨了不同常规能源作为太阳能补充时的经济性.研究结果表明:电站整体有效工作时间以及全年总发电量是选择太阳能热发电站地址的主要考虑因素,此外,无烟煤以及天然气资源可作为不同情况下备选的常规能源,以提高太阳能热发电站的整体性能.

An integrative theory-model-simulation（TMS）is performed for investigating the performance of the trough solar energy generation system（SEGS）with saturated steam cycle.Based on the solar radiation data in 30 provincial capital cities in China,the running of the whole SEGS is simulated and the yearly performance is evaluated,and the effects of day-and-night,seasons,years and latitude on the system total efficiency are analyzed.The influence of different conventional energy as the supplementary energy source on the SEGS cost is also discussed.The simulation results show that the effective working time of the SEGS and the yearly energy production are the major factors that ought to be taken into account while choosing the place to build a SEGS.In addition,for different cases anthracite and natural gas can be chosen as the conventional energy sources to improve the SEGS performance.