The Experience of Finite Elements Method Utilization for Simulation of Heat-Mass Transfer in Heat Pipes and Other Elements of Thermal Control Systems

1993 ◽  
Author(s):  
V. Baturkin ◽  
K. Schoda ◽  
G. Bajbuzenko
Keyword(s):  
Mass Transfer ◽  
Finite Elements ◽  
Control Systems ◽  
Heat Mass Transfer ◽  
Heat Pipes ◽  
Thermal Control ◽  
Finite Elements Method

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

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.

Heat and Mass Transfer in Loop Heat Pipes

2003 ◽  
Author(s):  
Triem T. Hoang ◽  
Jentung Ku
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
High Performance ◽  
Heat Pipes ◽  
Thermal Control ◽  
Complete Understanding ◽  
Loop Heat Pipes ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Control Concept

Loop Heat Pipes (LHPs) have gained acceptance among spacecraft engineers in recent years as high performance heat transport devices for thermal control systems (TCS). However, the most common criticism from people who use LHPs is that their behavior is difficult to predict. Complex interaction of thermodynamics and fluid flow dynamics inside a LHP poses a challenge for the analytical modeling of its performance. The need for a complete understanding of mechanisms involving the heat and mass transfer in a LHP cannot be overstated. During the initial spacecraft TCS design phase, trade studies are usually carried out to select an appropriate thermal control concept for the design. The inability to accurately predict the LHP response in the actual operating environment often leads to the dismissal of LHPs for lack of certainty. This paper attempts to present a simplistic explanation of LHP operation in terms of heat and mass transfer processes, in hope that it will help the potential end-users to understand the technology better. Most of the observed phenomena described herein are based on available test data of various LHP systems. Nevertheless, a few anomalies especially during operational transients are still not well understood. For that, research ideas will also be proposed.

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
Sign in / Sign up

Export Citation Format

Share Document