塔式太阳能双储联合发电技术

Solar tower combined double heat storage power generation technology

基于光热储能发展现状,结合双机联合发电技术,提出了一种新型塔式太阳能联合发电系统。该系统采用两级储热,两级发电设计,高温热气轮机与高温储热器结合,蒸汽轮机与中温储热器结合,二者既能够协调联合发电,又可短时独立发电。典型系统设计的估算结果表明,塔式太阳能热发电的峰值效率可达20.5%,年平均发电效率为13.37%。该系统能够充分利用太阳能,提高发电效率,并可回收利用低温余热。

On the basis of thermal energy storage technology and dual-generator co-generation ideas,a novel solar tower thermal power co-generation system was proposed.The system applies two thermal energy storages and two turbines.In this system,the high temperature gas turbine is combined with the high temperature thermal storage,and the steam turbine is combined with the medium temperature thermal storage. The two turbines not only can work together,but also can run separately for a short time.The estimation results show that,peak efficiency of the tower solar thermal power system is up to 20.5%,and the annual average power generation efficiency is 1 3 .3 7%.This system can take full use of solar heat,enhance power generation efficiency,and reuse the waste heat.