摘要
根据汽轮机组回热系统的热平衡计算,分析了等效焓降法理论,说明了等效焓降法是以蒸汽初、终参数和蒸汽流量不变,回热系统特征量为常数,且满足小扰动理论为前提条件的回热系统的局部足量求解方法.论述了该方法的使用条件、使用范围和使用价值.将等效焓降法和热偏差法有机结合,推导出扩展的能损分析理论,通过在火电厂实际应用证明,该方法是有效的.
The theory of equivalent enthalpy drops can be applied for simple quantitative analysis and calculation of the heat-cycle system of turbine units. This work based on the calculated heat balance of the heat-cycle system revealed the essential significance of the theory of equivalent enthalpy drops; based on these conditions: invariable beginning and ending steam parameters, invariable steam flux, a constant as eigenvalue of heat-cycle system. After consideration of small interference theory, the patulous energy-loss analysis theory uniting the theory of equivalent enthalpy drops and the theory of heat-warp was derived for real-time energy-loss analysis of power plants. The results of practical application in the thermal power plant prove that this method is simple and effective.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2004年第3期347-350,共4页
Journal of Zhejiang University：Engineering Science
关键词
等效焓降
能损分析
小扰动理论
热偏差
equivalent enthalpy drops
energy-loss analysis
small interference theory
heat-warp
