Abstract
The influence of transient heat transfer in different condensation condition was investigated experimentally in the present paper. Getting condensation heat and mass transfer regularity and characteristics in space can provide theoretical basis for thermodynamic device such as heat pipes, loop heat pipes and capillary pumped loops as well as other fluid management engineering designing. In order to study the condensation process in space, an experimental study has been carried out on the ground for space experiment. The results show that transit heat transfer coefficient of film condensation is related to the condensation film width, the flow condition near the two phase interface and the pressure of the vapor and non-condensable gas in chamber. On the ground, the condensation heat flux on vertical surface is higher than it on horizontal surface. The transit heat flux of film condensation is affected by the temperature of superheated vapor, the temperature of condensation surface and non-condensable gas pressure. Condensation heat flux with vapor forced convection is many times more than it with natural convection. All of heat flux for both vapor forced convection and natural convection condensation in limited chamber declines dramatically over time. The present experiment is preliminary work for our future space experiments of the condensation and heat transfer process onboard the Chinese Spacecraft “TZ-1” to be launched in 2016.
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Acknowledgments
This research was financially supported by the China’s Manned Space Program (TZ-1) , the Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences and National Natural Science Foundation of China (Grants No.11302236).
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Wang, X., Liu, Q., Zhu, Z. et al. Experiments of Transient Condensation Heat Transfer on the Heat Flux Senor. Microgravity Sci. Technol. 27, 369–376 (2015). https://doi.org/10.1007/s12217-015-9427-z
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DOI: https://doi.org/10.1007/s12217-015-9427-z