传热系数变化时多背压凝汽器的温差场均匀性分析  

UNIFORMITY ANALYSIS OF TEMPERATURE DIFFERENCE EIELD IN MULTIPRESSURE CONDENSER WHEN HEAT TRANSFER COEFFICIENT IS CONSIDERED AS VARIABLE

作　　者：郜时旺[1] 杨沫[2] 何坚忍 危师让[4] 

机构地区：[1]西安交通大学,西安710049 [2]东北电力学院,吉林132012 [3]哈汽高科技有限责任公司,哈尔滨150036 [4]电力部热工研究院,西安710032

出　　处：《热力发电》1998年第5期32-35,43,共5页Thermal Power Generation

基　　金：国家自然科学青年基金

摘　　要：结合多背压凝汽器，研究了考虑传热系数变化时温差场均匀性原则的适用性问题。作为初步近似，将凝汽器的各级传热系数取为不同的常数，得到的关联式与文献［１］对传热系数为常数时的研究结果相同。为了说明论述的正确性，还用其它两种方法对乡背压凝汽器进行了研究，得到了与温差场均匀性分析相一致的结论。The uniformity principle of Temperature Difference Field(TDF) was studied in multi-pressure condenser when heattransfer coefficient was considered as variable. The heat transfer coefficient is a relevant constant in different steps of con- denser. The relation obtained is the same as the research results of reference 1 in which heat transfer coefficient was re- garded as a constant. In order to verify the correctness of deduction, the study conducted in multipressure condenser withother two methods and the conclusion coincides well with the results of uniformity analysis of TDF.

关 键 词：传热系数 凝汽器 温差场 汽轮机 均匀性分析 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]