太阳池的非稳态热性能的数值模拟

Numerical simulation of unsteady heat performance of solar pond

为了收集和储存太阳能,必须深入研究太阳池的运行机制,采用太阳池在非稳态情况下热性能的相关数学模型,以有限差分方法对热性能进行了数值模拟,得出了太阳池温度场的分布规律,进一步分析了池水浊度、池底保温层等对太阳池热性能的影响,计算表明:太阳池底部应铺设保温层,但不宜太厚;水浊度抑制了太阳辐射在池中的传播,大大降低了太阳池的热性能。最后用实测数据验证了计算结果的可靠性。

In order to HIGH-efficiently collect and store solar energy, the operation mechanism of the solar pond should be well studied. Based on the mathematical model of unsteady thermal performance of solar pond and the definite difference method, a reasonable numerical simulation is performed to study the temperature field of the solar pond. The effect of the brine turbidity and the heat preservation layer underneath the pond bottom on the heat performance of the solar pond is analyzed. Simulation results reveal that a additional thin heat preservation layer should be paved at the pond bottom, and water turbidity will decrease the thermal performance of solar pond Through the actual data, the reliability of the simulation result is ensured.