Methodology and Realization of a Heat Pipe Performance Test in a Thermal Vacuum Chamber

  • Cem Ömür Turkish Aerospace Industries, Inc.
  • Osman Furkan Muratoğlu Turkish Aerospace Industries, Inc.
  • İlhami Horuz Gazi University
Keywords: Heat Pipe, Space Applications, Thermal Vacuum Chamber, Maximum Heat Transport, Effective Thermal Conductivity


In this study, a newly developed test set-up installed in a thermal vacuum chamber and the thermal performance test performed with this set-up is described. Evaporator is simulated by using mounted resistive heaters on it whereas two black painted aluminum plates in contact with the condenser are used to remove heat from heat pipe. Thanks to the vacuum level obtained in the chamber, the convection heat transfer is eliminated; so, the heat loss from heat pipe can be neglected while calculating the maximum heat transport capacity of the heat pipe. When the proposed test methodology is applied and the measured test parameters are used, maximum heat transport capacity and effective thermal conductivity of a heat pipe can be calculated with relatively small uncertainties. Therefore, the proposed test-up and test methodology is demonstrated to be an efficient tool for the determination of heat pipe thermal parameters.


[1] Işık, H. G., Ömür, C., Uygur, A. B., Horuz, İ., ‘’A novel burst testing approach for the qualification of heat pipes used in space applications,’’ International Journal of Pressure Vessels and Piping, 165, 214-248, 2018.
[2] Ömür, C., Uygur, A. B., Işık, H. G., Horuz, İ., ‘’Manufacturing phase embedded design optimization of extruded heat pipes for space applications,’’ Applied Thermal Engineering, 126, 436 – 446, 2017.
[3] Ömür, C., Uygur, A. B., Horuz, İ., “The effect of manufacturing limitations on groove design and its implementation to an algorithm for determining heat transport capability of heat pipes,” Journal of Thermal Science and Technology, 37-1, 159 – 170, 2017.
[4] Ömür, C., Uygur, A. B., Horuz, İ., Işık, H. G., Ayan, S., Konar, M., “Incorporation of manufacturing constraints into an algorithm for the determination of maximum heat transport capacity of extruded axially grooved heat pipes,” International Journal of Thermal Sciences, 123, 181-190, 2018.
[5] Alijani, H., Çetin, B., Akkus, Y., Dursunkaya, Z., “Effect of design and operating parameters on the thermal performance of aluminum flat grooved heat pipes,” Applied Thermal Engineering, 132, 174-187, 2018.
[6] Alijani, H., Çetin, B., Akkus, Y., Dursunkaya, Z. “Experimental thermal performance characterization of flat grooved heat pipes,” Heat Transfer Engineering, DOI: 10.1080/01457632.2018.1442395, 2018
[7] Wei, W. C., Tsai, S. H., Yang, S. Y., Kang S. W., ‘’Effect of nanofluid concentration on heat pipe thermal performance,’’ 3th ASME/WSEAS International Conference on Heat Transfer, Thermal Engineering and Environment, 115-117, 2005
[8] Anand, A. R., Vedamurthy, A. J., Chikkala, S. R., Kumar, S., Kumar D., Gupta, P. P., ‘’Analytical and experimental investigations on axially grooved aluminum-ethane heat pipe,’’ Heat Transfer Engineering, 410-416, 2008.
[9] Chen, Y., Yao, F., Shi, M., ‘’Thermal response of a heat pipe with axially ‘‘Ω’’-shaped microgrooves,’’ International Journal of Heat and Mass Transfer, 4476-4484, 55, 2012.
[10] Bertoldo, J. J., Vlassov, V. V., Cândido, P. A., Genaro, G., ‘’Experimental performance comparison of axially grooved heat pipes charged with acetone and ammonia,’’ 16th International Heat Pipe Conference, 20-24, 2012.
[11] Lataoui, Z., Romestant, C., Bertin, Y., Jemni, A., Petit, D., ‘’Experimental investigation on the thermal behaviour and performance of an axially grooved heat pipe,’’ International Journal of Heat and Technology, 26(2), 2008.
[12] Schlitt, K. R., Brennan, P. J., Kirkpatrick, J. P., ’’Parametric performance of extruded axial grooved heat pipes from 100° to 300°K,’’ AIAA/ASME Thermophysics and Heat Transfer Conference, DOI: 10.2514/6.1974-724, 1974.
[13] Fleischman, G. L., Chiang T. C., Ruff, R. D., ‘’Oxygen heat pipe 0-g performance evaluation based on 1-g tests,’’ AIAA 26th Thermophysics Conference, 1991.
[14] Gilmore, D. G., ‘’Spacecraft thermal control handbook,’’ The Aerospace Press, 2nd edition, 2002.
[15] Brennan, P. J., Kroliczek, E. J., ‘’Heat pipe design handbook volume 1,’’ Maryland: B&K Engineering, 1979.
[16] Chen, Y., Zhang, C., Shi, M., Wua, J., Peterson, G. P., ‘’Study on flow and heat transfer characteristics of heat pipe with axial ‘‘Ω”-shaped microgrooves,’’ International Journal of Heat and Mass Transfer, 52, 636-643, 2009.
[17] Weiner, L., Chiotti, P. and Wilhem, H.A., ‘’Temperature dependence of electrical resistivity of metals,’’ Ames Laboratory ISC Technical Reports, 12-65, 1952.
[18] İnternet: Claybornlab heat tape specifications URL:, Son Erişim Tarihi: 29.11.2018
[19] European Coorperation for Space Standartization, ECSS-E-10-03A (12 February 2002), Space Engineering Testing, Noordwijk, The Netherlands.
[20] Zohuri, B., “Heat pipe design and technology, modern applications for practical thermal management”, 2nd edition, Switzerland: Springer, 2016
How to Cite
C. Ömür, O. Muratoğlu, and İlhami Horuz, “Methodology and Realization of a Heat Pipe Performance Test in a Thermal Vacuum Chamber”, JAST, vol. 12, no. 2, pp. 137-144, Jul. 2019.