摘要
我国中小火电站面临增容降耗的任务,利用中温太阳能改造火电站给水加热器投资少,改动小,技术难度低,具有一定应用市场.本文提出了一种对135 MW火电机组进行改造的典型方案,分析研究了辐照强度变化时系统变工况运行中重要参数的变化情况,并揭示了其变化原因,初步分析了变辐照条件下系统的经济性能,对我国火电站的改造具有一定参考价值.
Facing the task of expanding capacity and lowering ullage,small and medium scale coal-fired power plants in China can be repowered by low-grade solar heat with less change,lower investment and technical difficulty,leading to a promising application in the market.A typical approach to repower a 135 MW coal-fired power plant was proposed in this paper and the off-design performance of the repowered system with varying direct normal solar radiation was investigated.The reason for the changing regulation was given and a preliminary economic evaluation was estimated. The results would be useful for upgrading traditional plants in China.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第2期213-217,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50836005
No.2010CB227104)
关键词
中温太阳能
中小火电站
更新改造
变辐照
low-grade solar heat small and medium-scale coal-fired power plant repower varying direct normal solar radiation
