Numerical study on melt fraction during melting of phase change material inside a sphere
| Autor: | Wang Yunhao, Guan Shikai, Wei Li, Xu Zhang, Sui-Guang Li, Xueling Liu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 020209 energy Numerical analysis Shell (structure) Energy Engineering and Power Technology Thermodynamics 02 engineering and technology Radius 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction Thermal energy storage Phase-change material Spherical shell Fuel Technology Thermal conductivity Computer Science::Sound 0202 electrical engineering electronic engineering information engineering 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 42:18232-18239 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.04.136 |
| Popis: | This paper presents a numerical study on the constrained melting of phase change material (PCM) inside a sphere to investigate the effect of various factors on the melt fraction. A mathematical model of melting processes of the PCM inside a sphere is developed. And experiments are conducted to verify the numerical method. On the basis of the model, the effects of the sphere radius, the bath temperature, the PCM thermal conduction coefficient and the spherical shell material on the melt fraction of PCM inside a sphere are discussed. The results show that the PCM inside a sphere melts fast as the sphere radius is small, the bath temperature increases, and the PCM thermal conductivity is high. And the metal shell with high thermal conductivity should be adopted preferentially. The present study provides theoretical guidance for the design and operation of the phase change heat storage unit with sphere containers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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