THERMAL SCIENCE

International Scientific Journal

INFLUENCE OF VOID RATIO ON PHASE CHANGE OF THERMAL ENERGY STORAGE FOR HEAT PIPE RECEIVER

ABSTRACT
In this paper, influence of void ratio on phase change of thermal storage unit for heat pipe receiver under microgravity is numerically simulated. Accordingly, mathematical model is set up. A solidification-melting model upon the enthalpy-porosity method is specially provided to deal with phase changes. The liquid fraction distribution of thermal storage unit of heat pipe receiver is shown. The fluctuation of melting ratio in PCM canister is indicated. Numerical results are compared with experimental ones in Japan. The results show that void cavity prevents the process of phase change greatly. PCM melts slowly during sunlight periods and freezes slowly during eclipse periods as void ratio increases. The utility ratio of PCM during both sunlight periods and eclipse periods decreases obviously with the improvement of void ratio. The thermal resistance of void cavity is much higher than that of PCM canister wall. Void cavity prevents the heat transfer between PCM zone and canister wall.
KEYWORDS
PAPER SUBMITTED: 2013-06-27
PAPER REVISED: 2013-07-31
PAPER ACCEPTED: 2013-09-08
PUBLISHED ONLINE: 2013-09-22
DOI REFERENCE: https://doi.org/10.2298/TSCI130627135X
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE 3, PAGES [967 - 976]
REFERENCES
  1. Jianfeng, W., Xiaohong, X., et al., The Development of Middle and High Temperature Phase Change Materials. ISES Solar World Congress, Beijing, China, 2007
  2. Carsie, A., Glakpe, E.K., and Cannon, J.N., Modeling Cyclic Phase Change and Energy Storage in Solar Heat Receivers. J Thermophys Heat TR, 12(1998), pp. 406-413
  3. Strumpf, H. J., and Coombs, M. G., Advanced Heat Receiver Conceptual Design Study, NASA-88-25977, Lewis Research Center, Ohio, 1988
  4. Inaba, H., Dai, C. and Horibe, A., Natural Convection Heat Transfer of Microemulsion Phase-Change-Material Slurry in Rectangular Cavities Heated from Below and Cooled from Above. Int J Heat Mass Tran, 46(2003), pp. 4427-4438
  5. Do, K.S. and Tamme, H., Thermal Conductivity of High-Temperature Multicomponent Materials with Phase Change. Int J Thermophys, 29(2008), pp. 678-692
  6. Hoshino, T., Naito, H., Fujihara, T., and Eguchi, K., Experimental Study on Stirling Engine Generator and Solar Receiver System for Future Space Application. AIAA-2000-2842, 2000.
  7. Abdalla, A., Ahmad,T.M., and AlHallaj, S., Thermo-Mechanical Behaviors of the Expanded Graphite-Phase Change Material Matrix Used for Thermal Management of Li-Ion Battery Packs. J Mater Process TECH, 210(2010), pp. 174-179
  8. Namkoong, D., Jacqmin, D. and Szaniszlo, A., Effect of Microgravity on Material Undergoing Melting and Freezing-The TES Experiment.AIAA 95-0614, Lewis Research Center, Ohio, 1995
  9. Keyong, D. and Xiugan Y., Two-Dimensional Transient Heat Transfer Analysis of a Phase Change Material Container. Trans. ASME J. Solar Energy Engineering, 19(1998), pp. 41-47
  10. Kerslake, T.W., and Ibrahim, M.B., Two-Dimensional Model of Space Station Freedom Thermal Energy Storage Canister. Trans. ASME J. Solar Energy Engineering, 114(1992), pp. 114-121
  11. Yuxin Z., Tutorial of Fluent, National Defense University of Science and Technology, Changsha, China, 2003
  12. Voller, V. R., and Swaminathan, C. R., Generalized Source-Based Method for Solidification Phase Change. Numer. Heat Transfer B, 19(1991), pp. 175-189
  13. Hitoshi, N., Tsutomu F. and Takeshi H., An Experimental Study of a Solar Receiver for JEM Experiment Program, AIAA-2000-2996, 2000

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence