化工学报2012，Vol.63Issue(11)：3446-3452,7.DOI:10.3969/j.issn.0438-1157.2012.11.010
一种高等温两相闭式热虹吸管的瞬态特性
Transient characteristics of a two-phase closed thermosyphon with isothermal characteristics
摘要
Abstract
The structure and characteristics of the two-phase closed thermosyphon with working trap are described. A mathematical model is presented to calculate the unsteady-state start-up process of a room temperature heat pipe. The model is based on the special structure and operation conditions of the heat pipe, which is simplified to that the steam temperature in the tube changes with time only. The relation of steam temperature and time is obtained by numerical calculation and used as the temperature boundary condition of the measurement trap. The temperature, velocity and pressure distribution in the working trap are then solved by FLUENT. The main effect of ambient air on the thermometer well occurs at the orifice, while the temperature is uniform at other locations. The calculation is in good agreement with experimental data, and the maximum deviation is 3. 7 K when the start-up time is 100 s. The simulation and experiments indicate that water fluid filling volume has little effect on the start-up performance of the heat pipe. The mathematical model and the research methods provide a new approach for the study of special heat pipes.关键词
热虹吸管/工作阱/瞬态/响应时间Key words
heat pipe/ working trap/ transient/ response time分类
能源科技引用本文复制引用
焦永刚,夏国栋,王丹,王伟,黄素格..一种高等温两相闭式热虹吸管的瞬态特性[J].化工学报,2012,63(11):3446-3452,7.基金项目
国家重点基础研究发展计划项目(2011CB710704) （2011CB710704）
国家自然科学基金项目(51176002). （51176002）
