Operational characteristics of miniature loop heat pipe with flat evaporator
Operational characteristics of miniature loop heat pipe with flat evaporator
复制标题
平板蒸发器微型环路热管运行特性
DOI：
10.1007/s00231-009-0563-0
复制
发表时间：
2009-12
影响因子：
2.2
通讯作者：
Yang, Jinguo
中科院分区：
文献类型：
--
作者：
Gai, Dongxing;Liu, Zhichun;Liu, Wei;Yang, Jinguo
回路热管是一种传热装置，其工作原理是基于工作流体的蒸发和冷凝，并利用毛细泵送力来确保流体循环。本文对一种具有平板蒸发器和翅片管冷凝器的微型环路热管进行了一系列的实验研究。回路由纯铜制成，不锈钢丝网芯，甲醇为工作流体。详细研究了mLHP在高、低热负荷下的启动可靠性。在步进功率循环下的mLHP测试中，回路达到稳态的热响应非常短。在低的热负荷下，在整个回路中观察到温度振荡。这些波动的幅度和频率在蒸发器壁和蒸发器入口处较大。预计振荡发生的程度和性质取决于补偿室内的热和流体动力学条件。mLHP的热阻介于0.29和3.2°C/W之间。详细研究了不同充液比和倾斜角度对启动和温度振荡的影响。
Loop heat pipes are heat transfer devices whose operating principle is based on the evaporation and condensation of a working fluid, and which use the capillary pumping forces to ensure the fluid circulation. A series of tests have been carried out with a miniature loop heat pipe (mLHP) with flat evaporator and fin-and-tube type condenser. The loop is made of pure copper with stainless mesh wick and methanol as the working fluid. Detailed study is conducted on the start-up reliability of the mLHP at high as well as low heat loads. During the testing of mLHP under step power cycles, the thermal response presented by the loop to achieve steady state is very short. At low heat loads, temperature oscillations are observed throughout the loop. The amplitudes and frequencies of these fluctuations are large at evaporator wall and evaporator inlet. It is expected that the extent and nature of the oscillations occurrence is dependent on the thermal and hydrodynamic conditions inside the compensation chamber. The thermal resistance of the mLHP lies between 0.29 and 3.2°C/W. The effects of different liquid charging ratios and the tilt angles to the start-up and the temperature oscillation are studied in detail.
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DOI：
--
发表时间：
2006
期刊：
Toxicon : official journal of the International Society on Toxinology
影响因子：
--
作者：
R. Singh
通讯作者：
R. Singh
DOI：
10.1063/1.1357932
发表时间：
2001-04
期刊：
--
影响因子：
--
作者：
J. Ku;L. Ottenstein;M. Kobel;P. Rogers;T. Kaya
通讯作者：
J. Ku;L. Ottenstein;M. Kobel;P. Rogers;T. Kaya
DOI：
10.4271/981813
发表时间：
1998-07
期刊：
--
影响因子：
--
作者：
K. Cheung;T. Hoang;J. Ku;T. Kaya
通讯作者：
K. Cheung;T. Hoang;J. Ku;T. Kaya
影响因子：
2.2
作者：
Zhichun Liu;W. Liu;A. Nakayama
通讯作者：
Zhichun Liu;W. Liu;A. Nakayama
影响因子：
6.4
作者：
R. Riehl;T. Dutra
通讯作者：
R. Riehl;T. Dutra