scholarly journals Gravity-assist heat pipes for thermal control systems

1975 ◽  
Author(s):  
J.E. Deverall ◽  
E.S. Keddy ◽  
J.E. Kemme ◽  
J.R. Phillips
Keyword(s):  
Control Systems ◽  
Heat Pipes ◽  
Thermal Control ◽  
Gravity Assist

Development of a Gravity-Assist Water Loop Heat Pipe With Flat Evaporator for Waste Heat Removal

2003 ◽  
Author(s):  
Triem T. Hoang ◽  
Tamara A. O’Connell ◽  
C. Thomas Conroy ◽  
Robert G. Mahorter ◽  
John A. Savchik ◽  
...  
Keyword(s):  
Heat Transport ◽  
Waste Heat ◽  
Fluid Management ◽  
Heat Removal ◽  
Heat Pipes ◽  
Pressure Head ◽  
Thermal Control ◽  
Transport Systems ◽  
Gravity Assist ◽  
Long Distance

Use of capillary pumped heat transport devices such as heat pipes, Capillary Pumped Loops (CPLs), and Loop Heat Pipes (LHPs) are being considered for cooling of shipboard electronics. These capillary devices contain no mechanical moving parts to wear out, require no electrical power to operate, and demand virtually no maintenance. Heat pipes have been the mainstay of spacecraft thermal control systems over the past 30 years. However with limited pumping heads, heat pipes were utilized only in a few terrestrial applications. Successful demonstration of much higher pumping capability of CPLs and LHPs in recent years now makes them feasible for ground-based heat transport systems. Fluid management in a gravity environment is also much easier that the traditional design of a CPL/LHP does not really apply to terrestrial systems. In addition, a gravitational pressure head generated by a vertical distance between the condenser and evaporator can assist the capillary pumping to augment the overall pumping capability of the loop. Thus, when properly designed, a gravity-assist CPL/LHP can transport a large amount of waste heat over a long distance for dissipation.

Response of Loop Heat Pipes to Transient Heat Loads

1999 ◽  
Author(s):  
J. B. Long ◽  
J. M. Ochterbeck
Keyword(s):  
Heat Pipe ◽  
Control Systems ◽  
Heat Pipes ◽  
Thermal Control ◽  
Loop Heat Pipe ◽  
Loop Heat Pipes ◽  
Power Inputs ◽  
Cyclic Heat ◽  
Lower Limits ◽  
Heat Loads

Abstract Loop heat pipes currently are being used in the thermal control systems for satellites. To expand possible loop heat pipe applications, information regarding response to transient heat inputs is required. In this investigation, two loop heat pipes with dual compensation chambers were subjected to heat inputs of varying magnitude, frequency, and waveform (square and sinusoidal). The performance of each loop heat pipe under these conditions was evaluated in different gravitational orientations. The upper and lower limits of heat transport also were assessed. A principle finding was that cyclic heat loads tended to aid startup of the loop heat pipes at the low power inputs.

Elaboration of thermal control systems on heat pipes for microsatellites Magion 4, 5 and BIRD

2003 ◽  
Vol 23 (9) ◽  
pp. 1109-1117 ◽  
Author(s):  
Volodymyr Baturkin ◽  
Stanislav Zhuk ◽  
Jaroslav Vojta ◽  
Franz Lura ◽  
Bernd Biering ◽  
...  
Keyword(s):  
Control Systems ◽  
Heat Pipes ◽  
Thermal Control

Loop Heat Pipes in Thermal Control Systems for “OBZOR” Spacecraft

1995 ◽  
Author(s):  
K. A. Goncharov ◽  
M. N. Nikitkin ◽  
O. A. Golovin ◽  
Yu. G. Fershtater ◽  
Yu. F. Maidanik ◽  
...  
Keyword(s):  
Control Systems ◽  
Heat Pipes ◽  
Thermal Control ◽  
Loop Heat Pipes
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