Quasi-steady state temperature distribution and numerical simulation on low Ste number latent heat storage thermal unit of solar thermal power generation
Solar thermal power generation systems, including direct steam generation, require isothermal energy storage systems for a saturation temperature range between 190°C and 310°C. One option to fulfill this requirement is the application of phase-change materials to absorb or release energy. In this paper, the basic concept of latent heat storage system is described, and a model of phase-change heat transfer of latent heat storage thermal unit for thermal energy storage system is built. Base on the practical thermo-physical properties of phasechange materials, Quasi-Steady State temperature distribution of phase-change heat transfer is analyzed under low Ste number. Numerical simulation (finite element method) taking account into the sensible heat is adopted and the results prove that the Quasi-Steady State temperature distribution obtained from theoretical is in good agreement with the results of numerical simulation. For a latent heat storage system with low Ste number characteristic, Quasi-Steady State solution can be used as the theoretical calculation foundation for engineering design.
Solar thermal power generation phase-change heat storage Quasi-Steady State solution finite element method
J.Huang D.S.Zhu
Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, Acade Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, Acade
国际会议
西安
英文
889-894
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）