空气对凝汽器传热系数的影响及清洁系数在线测定方法的进一步探讨  

Further Approach to Influence of Air Content on Heat Transfer Coefficient and On Line Determination Method of Clean Coefficient for Condenser

作　　者：朱玉娜[1] 王培红[1] 吕震中[1] 

机构地区：[1]东南大学

出　　处：《电站系统工程》1999年第1期24-28,共5页Power System Engineering

摘　　要：提出了一种基于试验的计算凝汽器传热系数空气侧修正系数的新方法。用这种方法确定的修正系数是空气含量的单值函数，即Ｃａ＝ｆ（ｄＧａ），所以能够准确地反映空气含量对传热系数的影响。将此式应用于凝汽器清洁率的测定计算，可实现凝汽器汽侧空气量和水侧脏污对传热系数影响的二者分离。Presents a new method for calculating a correction coefficient in the air side of the heat transfer coefficient in a condenser. The correction coefficient detemined by this method is a single valued function of the air content, i. e. C a= f (d G a), therefore it able to exactly represent influence of the air content on the heat transfer coefficient. When the function is used for detemining the clean ratio, the influences of both the air content in the vapour side and the dirt in the water side on the heat transfer coefficient can be separated, so that the function provides a basis for suitale cleansing the condenser.

关 键 词：凝汽器 传热系数 清洁系数 在线测定 汽轮机 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]