作　　者： ; ; ;

机构地区： 华南理工大学

出　　处： 《电站系统工程》 2002年第6期29-31,共3页

摘　　要： 凝汽器冷凝压力的变化引起汽轮机组微功率的变化,而凝汽器冷却水管内流速通过影响冷却水侧换热系数和污垢热阻来直接影响冷凝压力的变化。在考虑凝汽器冷却水侧污垢热阻随冷却水流速改变而改变的情况下,在对电站凝汽器污垢热阻进行模拟实验的基础之上建立数学模型,以最大经济效益为目标函数来求解最优冷却水流速和最优冷却水输水管直径,并分析了影响最优流速和最优直径的影响因素。 The change of pressure in condenser will cause the change of micro-power in turbine unit. However, the velocity of cooling water in condensers can cause the change of pressure by affecting the heat transfer coefficient and the fouling resistance in cooling water side. Taking into account the fouling resistance in cooling waterside changes as cooling water velocity changes, a mathematical model is proposed on the base of the stimulant experiment to the fouling of condenser. An optimal velocity of cooling water and an optimal tube diameter in cooling water side are obtained under the objective function of maximum economic benefit. The factors to the optimal velocity and the optimal diameter are also analyzed.

关 键 词： 污垢 凝汽器 经济性分析 汽轮机

领　　域： [动力工程及工程热物理]