采用气固两相流作为工质的高温光热发电技术

A High-temperature Concentrating Solar Power System Uses Gas/Solid Two-phase Flow as Heat-transfer Fluid

介绍了一种国外新近开发的高温太阳能光热发电(CSP)系统及其关键技术,其主要特点是采用灰渣作为传热工质,从而大幅度提高了太阳能光热发电的工质参数,显著提高了系统热效率,具有极好的应用前景。这里将此新型光热发电系统与现有熔融盐-太阳能热发电系统在技术和经济性上做了对比,还对该技术推广应用过程中可能出现的问题进行了分析论证。得出了此系统不仅在经济性和技术上具有显著优势,还为不远的将来可能结合实施的新型动力系统进行了有效技术铺垫的结论。

A new type high-temperature concentrating solar power（CSP） system is introduced.Using solid particles as storage media, it provides the possibility of obtaining high operating temperatures, improves power-conversion efficiency significantly, and draws a promising market.A comparison between the fuse salt-CSP（FC-CSP） system and novel CSP system is made.In addition, a discussion about the potential harriers in the generalization and application of this novel system is proposed.The cost and performance benefits of the FC-CSP system over a salt system are obvious, and it will also be compatible with several advanced high-efficiency power cycles that may he realized in the near future.