| 毛细相变流体回路中蒸发器的预热启动特性研究 |
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| 引用本文： | 周兵,涂正凯,刘志春,刘伟.毛细相变流体回路中蒸发器的预热启动特性研究[J].武汉理工大学学报(交通科学与工程版),2012,36(2):243-246. |
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| 作者姓名： | 周兵 涂正凯 刘志春 刘伟 |
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| 作者单位： | 1. 华中科技大学能源与动力工程学院 武汉430074
2. 武汉理工大学材料复合新技术国家重点实验室 武汉4300704 |
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| 基金项目： | 国家自然科学基金项目，中国博士点学科新进教师博士点基金项目，中国博士后科学基金项目 |
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| 摘 要： | 通过分析毛细管内液柱的动量方程,从力平衡的角度获得毛细相变流体回路系统的启动判别条件,并建立蒸发器的三维导热模型来研究系统的启动特性.研究表明:蒸发器的启动预热时间随启动热流的增大而减小;减小液体补偿腔的高度可以加快蒸发器的启动过程,且启动热流愈小该现象愈显著;在较低的启动热流条件下,减小蒸气槽道的宽度,可以减小启动预热时间,改善蒸发器启动性能,而在较高的热流密度下,其对蒸发器的启动性能影响不大.
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| 关 键 词： | 毛细相变流体回路 蒸发器 动量方程 启动特性 |
Investigation on Start-up Characteristic for Evaporator in a Capillary Loop with Phase Change |
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| Zhou Bing
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Tu Zhengkai
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Liu Zhichun
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Liu Wei.Investigation on Start-up Characteristic for Evaporator in a Capillary Loop with Phase Change[J].journal of wuhan university of technology(transportation science&engineering),2012,36(2):243-246. |
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| Authors: | Zhou Bing Tu Zhengkai Liu Zhichun Liu Wei |
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| Institution: | 1) (School of Energy and Power Engineering,HUST,Wuhan 430074,China)1)(State Key Laboratory of Advanced Technology for Materials Synthesis andProgressing,WHUT,Wuhan 430070,China)2) |
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| Abstract: | The start-up criterion of the capillary loop system with phase change was obtained by analyzing the force equilibrium of the capillary liquid column,and a three-dimensional thermal conducting model of the evaporator is established to investigate the start-up characteristics of the system.The results show that the preheating time of the evaporator decreases with increasing of the heat flux;reducing the height of the liquid compensation chamber can speed up the startup process of the evaporator and the effect would be more significant under a lower startup heat flux;besides,the preheating time can be shortened by reducing the width of the steam channels under lower startup heat flux,while the effects are not significant under high heat flux. |
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| Keywords: | capillary loop with phase change evaporator momentum equation start-up characteristic |
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