Thermoelectric Converters for Loop Heat Pipe Temperature Control: Experience and Lessons Learned

2010 ◽  
Author(s):  
Jentung Ku ◽  
Laura Ottenstein
Keyword(s):  
Heat Pipe ◽  
Temperature Control ◽  
Lessons Learned ◽  
Loop Heat Pipe ◽  
Thermoelectric Converters

Hydraulic operating temperature control of a loop heat pipe

2015 ◽  
Vol 86 ◽  
pp. 796-808 ◽  
Author(s):  
Wukchul Joung ◽  
Kee Sool Gam ◽  
Yong-Gyoo Kim ◽  
Inseok Yang
Keyword(s):  
Heat Pipe ◽  
Temperature Control ◽  
Operating Temperature ◽  
Loop Heat Pipe

Effect of Sink Temperature on the Stability of the Pressure-Controlled Loop Heat Pipe

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
Wukchul Joung ◽  
Joohyun Lee
Keyword(s):  
Heat Pipe ◽  
Temperature Control ◽  
Control Technique ◽  
Loop Heat Pipe ◽  
Heat Leak ◽  
Start Up ◽  
Recent Emergence ◽  
Compensation Chamber ◽  
The Stability ◽  
Pressure Controlled

Recently, a novel temperature control technique utilizing the unique thermohydraulic operating principles of the pressure-controlled loop heat pipes (PCLHPs) was proposed and proved its effectiveness, by which a faster and more stable temperature control was possible by means of the pressure control. However, due to its recent emergence, the proposed hydraulic temperature control technique has not been fully characterized in terms of the various operating parameters including the sink temperature. In this work, the effect of the sink temperature on the loop heat pipe (LHP)-based hydraulic temperature control was investigated to improve the stability of the proposed technique. Start-up characteristics and transient responses of the operating temperatures to different pressure steps and sink temperatures were examined. From the test results, it was found that there was a minimum sink temperature, which ensured a steady-state operation after the start-up and a stable hydraulic temperature control with the increasing pressure steps, due to the unstable balance between the heat leak and the liquid subcooling in the compensation chamber at low sink temperatures. In addition, the range of the stable hydraulic temperature control was extended with the increasing coolant temperature due to the decreased heat leak, which resulted in the increased pressure difference between the evaporator and the compensation chamber. Therefore, it was found and suggested that for a stable hydraulic temperature control in an extended range, it was necessary to operate the PCLHP at higher sink temperatures than the low limit.

Basics of Loop Heat Pipe Temperature Control

1999 ◽  
Author(s):  
Michael Nikitkin ◽  
Evgenyi Kotlyarov ◽  
Gennadyi Serov
Keyword(s):  
Heat Pipe ◽  
Temperature Control ◽  
Loop Heat Pipe

Loop Heat Pipe Utilization for Temperature Control of Electronics Deck

2011 ◽  
Author(s):  
Triem Hoang ◽  
Denis Mahony ◽  
Robert Baldauff ◽  
Sheleen Spencer ◽  
Debbie Zakar
Keyword(s):  
Heat Pipe ◽  
Temperature Control ◽  
Loop Heat Pipe
Sign in / Sign up

Export Citation Format

Share Document