Experimental study on transient behavior of semi-open two-phase thermosyphon.
An experimental system was set up to measure the temperature, pressure, heat transfer rate and mass flow rate in a semi-open two-phase thermosyphon. The behaviors of a semi-open two-phase thermosyphon during startup, shutdown and lack of water were studied to get complete understanding of its thermal characteristics. The variation of wall temperature, heat-exchange condition and pressure fluctuations of semi-open two-phase thermosyphons showed that the startup of SOTPT needs about 60-70 min; the startup speed of SOTPT is determined by the startup speed of the condensation section; the average pressure in the heat pipe is equal to the environmental pressure usually; the shutdown of SOTPT needs about 30-50 min; a semi-open two-phase thermosyphon has good response to lack of water accident.
Zhu
Hua
H
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China. zhuhua@zju.edu.cn
Wang
Jian-Xin
JX
Zhang
Qiao-Hui
QH
Tu
Chuan-Jing
CJ
D004735:Energy Transfer; D006361:Heating / Q000295:instrumentation* / Q000379:methods*; D006358:Hot Temperature; D007700:Kinetics; D008422:Materials Testing; D044367:Phase Transition; D011312:Pressure; D013696:Temperature; D013814:Thermal Conductivity; D014867:Water / Q000737:chemistry*
D014867:Water