| Related citation: | Ge Zhang,Wenshuai Miao,Li Liu,Yingying Hong,Jiao Bai.Investigation of Geometric Factors of Convex Platforms in the Flat Evaporator of Loop Heat Pipes[J].Journal of Harbin Institute Of Technology(New Series),2017,24(6):90-96.DOI:10.11916/j.issn.1005-9113.16125. |
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| Author Name | Affiliation | | Ge Zhang | School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China | | Wenshuai Miao | School of Energy and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China | | Li Liu | School of Advanced Engineer, University of Science and Technology Beijing, Beijing 100083, China | | Yingying Hong | School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China | | Jiao Bai | School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: |
| This paper investigated the influence of geometric factors of vapor groove structures on the performance of flat evaporator of a loop heat pipe system. COMSOL multiphysics software was employed to simulate the heat transfer in the evaporator with convex platforms of different shapes, sizes and area ratios (φ) between convex platforms and the heated surface. The maximum temperature and temperature distribution of each model were obtained. The results showed that the decrease of the size of platforms and the increase of φ can lower temperatures and improve temperature distribution homogeneity of the heated surface. Compared with circle and oval platforms, square platforms achieved lower temperature. The results also indicated that φ had the most significant impact on the performance of the evaporator. |
| Key words: loop heat pipe flat evaporator vapor groove structure geometric factor |
| DOI：10.11916/j.issn.1005-9113.16125 |
| Clc Number:TK124 |
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| Descriptions in Chinese: |
| 环路热管平板蒸发器凸台的几何参数研究 张舸1，苗文帅2，刘立3，洪迎迎1，白姣1 （1.北京科技大学 土木与资源学院，北京 100083； 2.北京科技大学 能源与环境工程学院，北京 100083； 3.北京科技大学 高等工程师学院，北京 100083） 创新点说明：目前对平板式蒸发器回路热管的蒸气槽结构的研究主要通过实验或对比的方法，对槽道结构几何因素缺乏深入的理论研究。本文通过建立数学模型，在稳定条件下求解能量、质量和动量守恒方程得到温度场和速度场，研究了凸台的三个几何参数：形状、尺寸以及凸台面积占比?对环形热管系统平板蒸发器性能的影响，并在此基础上提出优化蒸汽槽结构的方法。 研究目的： 研究蒸气槽结构几何参数对环路热管平板蒸发器性能的影响，对环路热管的性能进行优化。 研究方法： 利用COMSOL Multiphysics软件进行数值模拟。 结 果： 减小凸台尺寸和增加?可以降低温度，使加热面温度分布更加均匀；与圆形和椭圆形平台相比，方形平台的加热面温度较低；面积比?对蒸发器的性能影响最大。 结 论： 对凸台结构的优化同时考虑了结构对传热和流动的影响，可反映热管蒸发器的综合性能。 关键词：环路热管，平板蒸发器，蒸气槽道结构，几何参数。 |
