太阳能辅助燃煤互补发电集成方式研究

On Integrated Mode of Solar Energy Assisted Coal-Fired Power Generation

目前太阳能辅助燃煤互补发电技术已经得到了一定发展,但该技术较为复杂,实际发电效果受多种因素影响,特别是太阳能集热器集成方式将对整个系统产生较大的影响.首先就现在已有的3种集成方式(锅炉并联、回热器并联、锅炉+回热器并联)进行分析简化,建立了理想热力学模型并分析了各种方式的热效率、汽耗率,之后参考N330型燃煤机组的相关参数并结合建立的理想模型进行了举例计算.最后得到了3种集成方式热效率、汽耗率与太阳能集热器强度的关系,由此分析出3种集成方式的特点,给出了建设电厂、选择集成方式时的一些参考建议以及该技术未来发展的方向展望.

At present,the solar-assisted coal-fired complementary power generation technology has been developed,but the technology is very complex and the actual power generation is effected by a variety of factors.In particular,the integration of the solar collector will have a greater impact on the entire system.In this paper,the existing three kinds of integrated methods（boiler parallel,regenerator parallel,boiler＋regenerator parallel）have been simplified and analyzed.The ideal thermodynamic model has been established and the thermal efficiency and steam rate been analyzed.The relevant parameters of the N330 coalfired unit have been combined with the ideal model.Finally,the relationship between the thermal efficiency,the steam consumption rate and the solar collector has been obtained.Based on the analysis of the characteristics of the three integrated models,some suggestions are given to build the power plant,select the integrated method and the future development of the technology.