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本文对SOLRGT系统(一种新型的中低温太阳能与化石燃料互补的动力系统)进行了热力经济性分析。该系统基于化学回热循环,通过中低温太阳能品位的间接提升、与先进燃气轮机的集成,实现中低温太阳能的高效、低成本热功转换以及和化石燃料的综合梯级利用。本文将其与同等输入下的两种单输入发电系统进行对比分析,研究表明:基本工况下,SOLRGT系统的比投资为751$/kW,发电成本为0.0635$/kWh,回收期12 1年;相对同等输入下单输入发电系统发电成本下降了16.6%,充分显示其优越性。
In this paper, the thermodynamic analysis of the SOLRGT system, a new type of hybrid power system with medium and low temperature solar energy and fossil fuels, is carried out. The system is based on the chemical cycle of heat recovery, through the indirect upgrading of mid-to-low temperature solar energy grade and integration with advanced gas turbines to realize the efficient and low-cost thermal power conversion of low and mid-temperature solar energy and the integrated cascade utilization of fossil fuels. The comparison of two single-input generation systems under the same input shows that under the basic conditions, the specific investment of SOLRGT system is 751 $ / kW, the generation cost is 0.0635 $ / kWh, and the payback period is 121 years ; Relative input power generation system under the single input power generation costs fell by 16.6%, fully demonstrated its superiority.