Abstract
Dilute aqueous solutions of high-carbon alcohols (number of C≥4) show an increase in the surface tension with increasing temperature in a particular temperature region. Liquid/vapor phase change in these aqueous solutions induces a very strong liquid flow in the vicinity of the interface due to both thermocapillary flow and the Marangoni flow caused by the preferential evaporation of alcohol-rich composition. Since such a spontaneous local liquid flow directs toward dry patch or hotter area, the expression of “self-rewetting” has been employed for these liquids. The present author focused his attention to this particular surface tension behavior, and has been studying both terrestrial and microgravity applications utilizing self-rewetting fluids as a working fluid in heat transfer devices. This article briefly introduces some of the recent research subjects related to self-rewetting fluids conducted by the present author and co-workers. First, the improvement in the thermal performance of wicked heat pipes with using self-rewetting fluids is emphasized based on detailed experimental evaluations. The experimental results on ultra-light weight wickless heat pipes, fabricated with 25µm thick polyimide film, in low gravity condition are then given.
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References
Vochten, R. Petre, G.: 1973, “Study of the heat reversible adsorption at the air-solution interface”. J. Colloid Interface Sci., 42, 320–327
di Francescantonio, N.: 2006, Dissertation, Univ. Naples Federico II.
Abe, Y., Oka, T., Mori, Y.H., Nagashima, A.: 1994, “Pool boiling of a non-azeotropic binary mixture under microgravity”. Int. J. Heat Mass Transfer, 37, 2405–2413.
Abe, Y., Tanaka, K., Mochizuki, M., Sato, M., di Francescantonio, N. Savino, R.: 2006, “Heat pipes with self-rewetting fluids”. Proc. 8th Int. Heat Pipe Symp., 76–81.
Abe, Y., Iwasaki, A. Tanaka, K.: 2005, “Thermal management with self-rewetting fluids”. Microgravity Sci. Tech., XVI, 148–152.
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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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Abe, Y. Terrestrial and microgravity applications of self-rewetting fluids. Microgravity Sci. Technol 19, 11–12 (2007). https://doi.org/10.1007/BF02915737
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DOI: https://doi.org/10.1007/BF02915737