Abstract
To clarify the relation between local heat transfer and bubble behaviors in pool boiling under microgravity conditions, a transparent heating surface, which has multiple array of heaters and temperature sensors, and experimental apparatus were developed to make the measurement of local heat transfer characteristics and the observation of liquid-vapor behavior simultaneously possible. In this paper, preliminary results of the microgravity pool boiling experiments conducted in ESA 49th parabolic flight campaign were reported. It was found that the bubble behaviors were strongly affected by the fluctuation of gravity in low-gravity period, and the effect of gravity on the bubble behaviors and heat transfer was dependent on the liquid subcooling. In the case of high subcooling, boiling bubbles were pushed on to the heating surface during positive low-g, and heat transfer due to microlayer evaporation was enhanced. On the other hand, during negative low-g period, bubbles detached from the heating surface, and the heat transfer rate was decreased. This trend, however, completely inverted at low subcooling. In positive low-g, the heat transfer was deteriorated because the dry patch was extended on the heating surface.
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Akagi, S., Sakata, Y., Ohta, H.: Planning of aircraft experiments for the clarification of heat transfer mechanisms in microgravity nucleate boiling. J. Jpn. Soc. Microgravity Appl. 25, 327–331 (2008)
Kim, J., Benton J., Wisniewski, D.: Pool boiling heat transfer on small heaters: effect of gravity and subcooling. Int. J. Heat Mass Transfer 45, 3919–3932 (2002)
Henry, C., Kim, J.: A study of effects of heater size, subcooling, and gravity level on pool boiling heat transfer. Int. J. Heat Fluid Flow 25, 262–273 (2004)
Henry, C., Kim, J., Chamberlain, B., Hartman, T.: Heater size and heater aspect ratio effects on subcooled pool boiling hat transfer in low-g. Exp. Therm. Fluid Sci. 29, 773–782 (2005)
Ohta, H.: Experiments on microgravity boiling heat transfer by using transparent heaters. Nucl. Eng. Des. 175, 167–180 (1997)
Onuki, A.: Dynamic van derWaals theory of two-phase fluids in heat flow. Phys. Rev. Lett. 94 (2005). doi:10.1103/PhysRevLett.94.054501
Onuki, A.: Dynamic van der Waals theory. Phys. Rev. E 75 (2007). doi:10.1103/PhysRevE.75.036304
Teshigawara, Y., Onuki, A.: Droplet evaporation in one-component fluids: dynamic van der Waals theory. EPL 84 (2008). doi:10.1209/0295-5075/84/36003
Sakata, Y., Akagi, S., Yoshioka, S., Shinmoto, Y., Ohta, H.: Proposal of experiments for the clarification of heat transfer mechanisms in microgravity nucleate boiling. In: Proc. 26th Int. Sympo. Space Technol. Sci., 2008-h-27 in CD-ROM (2008)
Sato, Y., Inoue, K., Ohta, H.: Development of heating surface for microgravity boiling experiment. J. Jpn. Soc. Microgravity Appl. 24, 71–76 (2007)
Straub, J.: Pool boiling and bubble dynamics in microgravity. In: Monti, R. (eds.) Physics of Fluids in Microgravity, pp. 323–370. Taylor & Francis, London (2001)
Stephan, P., Busse, C.A.: Analysis of the heat transfer coefficient of grooved heat pipe evaporator walls. Int. J. Heat Mass Transfer 35, 383–391 (1992)
Stephan, P., Hammer, J.: A new model for nucleate boiling heat transfer. Heat Mass Transf. 30, 119–125 (1994)
Wagner, E., Sodtke, C., Schweizer, N., Stephan, P.: Experimental study of nucleate boiling heat transfer under low gravity conditions using TLCs for high resolution temperature. Heat Mass Transf. 42, 875–883 (2006)
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Kawanami, O., Ohta, H., Kabov, O. et al. Heat Transfer and Bubble Behaviors in Microgravity Pool Boiling in ESA Parabolic Flight Experiment. Microgravity Sci. Technol. 21 (Suppl 1), 3–8 (2009). https://doi.org/10.1007/s12217-009-9150-8
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DOI: https://doi.org/10.1007/s12217-009-9150-8