太阳能热发电系统蓄热装置的模拟研究

利用FLUENT软件中的凝固/熔化模型,对太阳能热发电高温相变蓄热器的蓄、放热过程进行了数值模拟,主要研究了傅立叶数、斯蒂芬数、雷诺数对相变过程的影响,并对结果进行了分析,同时通过最小二乘法原理对换热准则式进行了拟合,掌握了太阳能热发电高温相变蓄热器相变过程的规律,为太阳能热发电系统蓄热装置的优化设计提供了重要参考价值和理论依据。

The Numerical Simulation of Heat Storage Device Used in Solar Thermal Power Generation

By using the solidification/melting model of FLUENT software,the flooding and releasing heat process of high-temperature phase transition thermal energy storage container used in solar thermal power generation was simulated numerically. The effects of Fourier number,Stephen number and Reynolds number on the phase transition process are studied and analyzed. Meanwhile,the heat transfer criterion equation was fitted with least square method. As the rule of the phase change process of high-temperature phase transition thermal energy storage container in solar thermal power generation was mastered,it provides an important reference value and theoretical basis for its optimization design.