Development of Thermal Model by Performance Verification of Heat Pipe Subsystem for Electronic Cooling under Space Environment

Heat pipes are used to control the thermal problem for electronic cooling. It is especially difficult to dissipate heat to a heat sink in an environment in space compared to earth. For solving this problem, in this study, the Poiseuille (Po) number, which is the main measure of the performance of a heat pipe, is studied by CFD; then, the heat pipe performance is verified with experimental results. A heat pipe is then fabricated for a spatial environment, and an in-house code is developed. Further, a heat pipe subsystem, which consists of a heat pipe, MLI (Multi Layer Insulator), SSM (Second Surface Mirror), and radiator, is tested and correlated with the TMM (Thermal Mathematical Model) through a commercial code. The correlation results satisfy the 3K requirement, and the generated thermal model is verified for application to a spatial environment.

Authors:

• MK Lee
• JS Hong
• SM Sin
• HU Oh

Keywords:

• CFD
• Heat pipe
• Radiator
• Space.

References:

[1] K. H. OH, M.K. LEE, and S.H.JEONG, "Design and fabrication of a
metallic micro-heat pipe based on high-aspect-ratio microchannels," Heat
transfer engineering, vol. 28, pp. 8-9, 2007.
[2] C. Aghanajafi, V. Vandadi, M.R. Shahnazari, " Investigation of
Convection and Radiation Heat Transfer in Rhombus Microchannels," Int.
J. Research and Reviews in Applied Sciences, vol 3. Issue 2, 2010
[3] S.J. Park, S. Cjung, H.W. Bang, C.I. Chung, D.C. Han, J.K. Chang,
"Modeling and Designing of Microfludic System Using Poiseuille
Number," 2nd Annual International IEEE-EMBS Special Topic
Conference on Microtechnologies in Medicine and Bilology.
Proceedings(Cat.No.02EX578), 2002
[4] S.H. Jin and J.H. Boo, "Performance Analysis of a Heat Pipe Radiator for
Thermal Control of Satellites," unpublished, 1992
[5] N. Damean, P.P.L. Regtien, "Poiseuille number for the fully developed
laminar flow through hexagonal ducts etched in <100> silicon," Sensors
and Actuators A, vol. 90, pp. 96-101, 2001
[6] R.K. Shah, "Laminar flow friction and forced convection heat transfer in
ducts of arbitrary geometry," Int. J. Heat Transfer, vol. 18, pp. 849-862,
1975
[7] A. Faghri and M. Buchko "Experimental and Numerical Analysis of
Low-Temperature Heat Pipes with Multiple Heat Sources" Transactions
of ASME: Journal of Heat Transfer, Vol. 113, pp. 728-734, 1991
[8] Chi, S.W., Heat Pipe Theory and Practice, New York, pp 54, 1976
[9] T.H. Kim, "An Experimental Study on Estimation of Heat Transport
Capability for the Cross Section of Axially Grooved Heat Pipes",
unpublished, 2001
[10] Gilmore, David G.,"Spacecraft Thermla Control Handbook", The
Aerospace Press, El Segundo, CA., 2002
[11] "SINDA/FLUINT User-s Manual, Version 5.2", 2009, Cullimore and
Ring Technologies, Inc.