文献类型：期刊文献

英文题名：Rapid starting three-dimensional annular pulsating heat pipe with binary zeotropic and immiscible working fluid

作者：Zhang, Dong Li, Zehao Li, Haixia Li, Qingliang Ding, Yong An, Zhoujian Zhang, Chengbin

第一作者：Zhang, Dong

通信作者：Zhang, D[1];Zhang, D[2]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China;[2]Key Lab Complementary Energy Syst Biomass & Solar, Lanzhou 730050, Gansu, Peoples R China;[3]TianDi Ming Equipment Technol Co Ltd, Shanghai 200030, Peoples R China;[4]Guizhou Inst Technol, Sch Aeronaut & Astronaut Engn, Guiyang 550003, Peoples R China;[5]Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China;corresponding author), Key Lab Complementary Energy Syst Biomass & Solar, Lanzhou 730050, Gansu, Peoples R China.

年份：2025

卷号：276

外文期刊名：APPLIED THERMAL ENGINEERING

收录：;EI(收录号：20252318543760);Scopus(收录号：2-s2.0-105007111870);WOS:【SCI-EXPANDED(收录号:WOS:001504604400004)】；

基金：This work was supported by Lanzhou youth science and technology talent innovation project (2023-QN-31) , Industrial Support Plan Project of Gansu Provincial Education Department (2025CYZC-034) , the project of National Natural Science Foundation of China (52206087) , Gansu Province Young Talent Program (2025QNTD36) and Red Willow Outstanding Youth Project of Lanzhou University of Technology.

语种：英文

外文关键词：Mixed working fluid; Pulsating heat pipe; Start-up performance; Quick response; Thermal resistance

摘要：The Pulsating Heat Pipe (PHP) is widely recognized for its efficient heat transfer capabilities, particularly under high heat flux conditions. However, under low heat flux conditions, the PHP faces challenges in start-up and exhibits high thermal resistance, which hinders stable operation. In this study, a three-dimensional annular pulsating heat pipe was designed, and pure water and HFE-7100 were selected as working fluids. These fluids were mixed in different ratios (1:1, 1:2, 1:3, 2:1, 3:1) to form binary mixtures. The start-up performance of the PHP using both single and mixed working fluids was experimentally investigated at three different filling ratios (30 %, 50 %, and 70 %) and four inclination angles (30 degrees, 45 degrees, 70 degrees, and 90 degrees). The results demonstrate that the binary fluid mixtures significantly improve the start-up performance of the PHP under low heat flux conditions. A novel start-up behavior was observed, enabling the PHP to achieve rapid start-up and stable operation in a very short time. Among the tested configurations, the PHP filled with a 1:1 water/HFE-7100 mixture exhibited stable operation with a start-up time of just 14 s under a heating power of 20 W, a 30 degrees inclination angle, and a 50 % filling ratio, while maintaining a thermal resistance of 0.556 degrees C/W.