Study on Adding Coal Cinder at the Bottom of Bittern Filled Solar Pond

摘要

The quantity of salt used in solar pond is very high. In addition to sea salt, China is abundant in salt mining resour ce. In this paper, the experimental solar pond has been filled with bittern in LCZ. A low cost way to enhance LCZ temperature of salt gradient solar pond is introduced and investigated. Coal cinder is selected as the adding materials at the bottom of LCZ in solar pond. So there is a combined system of coal cinder and saline water in the bottom of the solar pond. An experimental and numerical investigation of temperature is presented. Measurement data of 29 days is compared to the numerical result. A twodimensional heat transfer model is used to simulate the temperature distribution on the vertical section. The boundary conditions are based on measured ambient temperature and solar radiation intensity. It has been shown that LCZ temperature is obviously increased when coal cinder is used in the combined system. During the 29 days, the mean temperature difference between experimental data (coal cinder system) and numerical results (without coal cinder system) is 3. 8℃.