超超临界机组蒸汽参数的优化选择  

OPTIMIZING SELECTION OF STEAM PARAMETERS FOR EXTRA-SUPERCRITICAL UNITS

作　　者：彭娜[1] 朱宝田[1] 李高[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2008年第4期6-9,共4页Thermal Power Generation

摘　　要：提高蒸汽参数是提高火电厂效率最有效的途径。通过对机组热力性能的计算和高温材料强度的计算分析,确定了主蒸汽压力、温度、机组热耗率和材料强度之间的关系,指出了蒸汽参数选择的范围和趋势,可为我国超超临界机组蒸汽参数的优化选择提供参考。Enhancing the steam temperature is a most effective way for improving the efficiency of Thermal Power Plant. Through calculation of thermodynamic performance of the unit,as well as calculation and analysis of strength for high- temperature materials, the relationship between strength of material and main steam pressure, temperature,as well as specific heat consumption of the unit has been determined,the range of selecting steam parameters and tendency of development being pointed out, providing with reference for optimizing selection of steam parameters for extra- supercritical units in our country.

关 键 词：超超临界机组 蒸汽参数 热耗率 耐热材料 高温强度 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]