表层结冰对太阳池性能的影响研究

EFFECT STUDY OF SURFACE ICE ON SOLAR POND PERFORMANCE

在对现有太阳池进行计算研究的基础上,针对目前北方太阳池冬季要经历结冰期这一现状,提出了表层结冰后太阳池辐射透射模型及热传导模型,将结冰情况考虑到太阳池的运行中,所提出的太阳池模拟计算中考虑了太阳池表面结冰对其整体性能的影响,为太阳池的长期连续性运行提供了研究基础。根据实际温度资料及气象条件,对结冰情况中太阳池的运行进行了数值模拟,得到:在不考虑结冰过程中冰内掺杂尘土等杂质或表面有积雪覆盖时,冬季考虑表面有冰层的太阳池储热性能优于不考虑表面冰层覆盖的情况,另外表层结冰很大程度上减少了太阳池盐梯度的维护。

Based on the present study of the solar pond, a new radiation transmission model and heat conduction model of the solar pond built in the north was proposed for the continuous freezing term in winter. Freezing is considered when the solar pond is in operation, and the influence of surface ice is also considered in the numerical simulation of the solar pond. The investigative foundation for the long term continuous operation of the solar pond was provided. According to actual temperature data and weather condition, a numerical simulation was completed and the conclusions were given for the solar pond with an ice cover on the surface. In the case of dust and snow accu- mulation on existing ice cover was not considered, the heat performance of solar pond with an ice cover in the surface is better than that without ice cover on the surface. The surface ice also reduces salt gradient maintenance needed for the solar pond.