熔盐-水双级集热槽式热发电系统性能研究  

Performance Investigation of Integrated MS-DSG Parabolic Solar Electric Generation System

作　　者：闫月君[1,2] 高志超[1] 许达[1,2] 刘启斌[1] 金红光[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《工程热物理学报》2013年第6期999-1003,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51276214;No.50836005);国家重点基础研究发展计划资助(No.2010CB227301)

摘　　要：本文针对现有单一工质槽式热发电系统存在的问题,提出了熔盐-水(MS-DSG)双级集热场槽式太阳能热发电系统。阐述了该系统的流程;选取单一的水(DSG)和熔盐(MS)集热系统为参照,对三种系统的性能进行了模拟、对比和分析。研究表明,新集成系统的设计点发电效率高于对应的单一MS系统,虽然效率略低于相同边界条件的单一DSG系统,但集成系统的高温段对装置材料的要求降低,系统布局和控制简化,安全性提高。随着高温太阳能集热管的研发,本文的研究成果将为新型槽式电站的设计和运行提供新方法。In order to overcome drawbacks of SEGS（solar electric generation systems）with single heat transfer fluid,an integrated two-stage MS-DSG（with molten salt and steam as heat transfer fluids） SEGS is proposed.The system composition is presented and performance analysis is conducted based on the comparison with SEGS with single heat transfer fluid- -the MS（the molten salt as heat transfer fluid） and the DSG（direct steam generation） systems.Results show that designed power generation efficiency of the integrated system is higher than that of MS system though a little lower than DSG system under the same boundary conditions.Compared to the DSG system,the integrated one has a lower requirement for material in high-temperature part of the system,thus simplifies the composition and control strategies of the system and improves operation safety.Research and development of the integrated system will provide new method for the design and operation of the new kind of SEGS.

关 键 词：太阳能热发电 双级集热场 系统集成 发电效率 

分 类 号：TK514[动力工程及工程热物理—热能工程]