太阳能-地热能联合发电系统研究进展

摘要

将多种新能源联合开发利用，使之能够取长补短，是未来新能源发展的重要方向之一。世界第一座太阳能–地热能联合电厂已经建成发电，与其相关的研究工作也已蓬勃开展。从已有的研究结果看，太阳能和地热能主要有两种结合方式——以地热能为主的联合发电系统和以太阳能为主的联合发电系统；研究内容主要围绕提高太阳能、地热能的利用效率，增加系统发电量而展开，根据系统处于稳态和非稳态时不同的运行特征，评估系统的热力性能和经济性能，指出保证系统长期稳定运行应考虑的问题。研究表明，联合发电系统是一种比单一太阳能发电系统或者单一地热能发电系统更加优越的能源利用模式。%Developing and using combined new energy sources is an important direction of development for new energy in future. The first Hybrid Solar-Geothermal Power station has been built, and related research on this field has been carried out vigorously. According to the recent research progress, we know that currently there are two hybrid types, one is mainly based on geothermal energy, and the other is mainly based on solar energy. Conducted researches mainly focused on improving thermal efficiency of solar and geothermal energy, increasing generating capacity. And besides, the assessment studies of thermal performance and economic performance under steady state and unsteady state, and long-term stable operation of the system are also presented in many articles. The literature review indicate that hybrid power generation mode present more advantage in energy efficient use compared to the stand-alone mode.