Abstract
This paper deals with certain aspects of convective condensation phenomena and condenser behaviour in capillary-driven cooling loops (CPL or LHP) studied in the LAPLACE laboratory, Toulouse. The effects of phase distribution, in the condenser, on the stability and the reliability of the whole system were studied. A model is proposed for convective condensation at low mass fluxes in a microgravity-like situation. The numerical results are in good agreement with experimental data. On increasing the mass flux, both numerical and experimental results suggest that the stationary state no longer exists, and intrinsic instabilities occur and develop in the condenser. The effects of such instabilities, as well as flow regime transitions, on loop behaviour remain an open question.
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Dupont, V, Joly, J.L., Miscevic, M., Platel, V.., 2001, “Capillary pumped loop start-up: effects of wick fit on boiling incipience”. AIAA Journal of Thermophysics and Heat Transfer, 17(2), 138–144.
Médéric, B., 2004, “Etude de la condensation convective en mini-tube: analyse des instabilités”. PhD, University P. Sabatier, Toulouse, France.
Ku, J., 2003, “High frequency low amplitude temperature oscillations in loop heat pipe operation”. SAE paper no 2003-01-2387.
Kirshberg, J., Yerkes, K., Liepmann, D., 1999, “Micro-cooler for chip-level temperature control”. SAE Aerospace Power Systems Conference.
Kirshberg, J., Yerkes, K., Liepmann, D., 2000, “Cooling effect of a MEMS based micro capillary pumped loop for chip-level temperature control”. ASME International Mechanical Engineering Congress and Exposition.
Liepmann, D., 2001, “Design and fabrication of a micro-CPL for chip-level cooling”. ASME International Mech. Engineering Congress Exposition.
Cytrynowicz, D., Hamdan, M., Medis, P., Suja, A., Henderson, H., Gerner, F.M., Golliher, E., 2002, “MEMS loop heat pipe based on coherent porous silicon technology”. Space Technology and Applications International Forum.
Serin, V., 2007, PhD in progress, University P. Sabatier, Toulouse, France.
Médéric, B., Miscevic, M., Lavieille, P., Joly, J.-L, 2006, “Experimental investigation of condensation flow in a minichannel by means of local void fraction determination”. International Journal of Heat Exchangers, 7(1), 15–32.
Médéric, B., Lavieille, P., Miscevic, M., 2006, “Heat transfer analysis according to condensation flow structures in a minichannel”. Experimental Thermal and Fluid Science, 30(8), 785–793.
Wallis, G.B., One-dimensional two-phase flow, 1969, McGraw-Hill, New-York.
Médéric, B., Lavieille, P., Miscevic, M., 2005, “Void fraction invariance property of complete condensation flow inside a capillary glass tube”. International Journal of Multiphase Flow, 31(9), 1049–1056.
Ku, J.,Rodriquez, J., 2003, “Low frequency high amplitude temperature oscillations in loop heat pipe operation”. SAE paper no 2003-01-2386.
Launay, S., Platel, V., Dutour, S., Joly, J-L, 2007, “Transient modeling of loop heat pipes for the oscillating behavior study”. AIAA Journal of Thermophysics and Heat Transfer, in press.
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Keynote Lecture was presented on the Second International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS October 26–28, 2007, Kyoto, Japan.
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Marc, M., Béatrice, M., Pascal, L. et al. Condensation in capillary-driven two-phase loops. Microgravity Sci. Technol 19, 116–120 (2007). https://doi.org/10.1007/BF02915770
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DOI: https://doi.org/10.1007/BF02915770