摘要
以常规热平衡方法和等效热降理论为基础,针对二次再热超临界机组热力系统高低压加热器均设置外置式蒸汽冷却器的特点,经过严格的数学推导,将等效热降理论应用于二次再热超临界机组热力系统循环吸热量计算的研究,并提出了适用于不同类型凝汽式机组的通用数学计算模型.经实例验证,该数学模型简捷、准确,为二次再热超临界机组和其他不同类型凝汽式机组热力系统热经济性的定量计算奠定了基础.
The authors first apply basic theory of equivalent heat drop on the common circulation heat calculating model for thermal system in supercritical pressure power unit with second reheat cycles and other kind of condensing steam turbine by mathematical derivation strictly, based on the normal energy balance and theory of equivalent heat drop, aiming at characteristics of thermal system in which there are outer steam coolers that high pressure heater and low pressure heater carry . The calculating results of some actual examples show that the present method is simple and accurate~ and it offers a foundation for the quantitative calculation of all kind of condensing steam turbine thermal system.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2006年第1期80-84,共5页
Engineering Journal of Wuhan University
关键词
二次再热超临界
热力系统
循环吸热量
计算模型
supercritical pressure power unit with second reheat
thermal system
circulation heat
calculating model
