Title :
Numerical Simulation of Heat Charging Process for Solar Heating Units with Metal Phase Change Thermal Storage
Author :
Chen Guansheng ; Zhang Li ; Zhang Renyuan ; Li, Zhang
Author_Institution :
Fac. of Mater. & Energy, Guangdong Univ. of Technol., Guangzhou, China
Abstract :
Phase change thermal storage is an important mode of solar thermal energy storage. In the paper, the heat charging processes of solar heating units were simulated under three kinds of heat flux (400,600 and 800kW/m2) at the bottom face respectively. Al-Si alloy was selected as phase change materials used in the cylindrical body of the units which were in 3 sizes with the length to diameter ratio of 1 and 2. The change of temperature and solid-liquid phase change interface of Al-Si alloy were analyzed to find out the suitable structure of thermal energy storage units which can run safety under the condition of temperature 700~910K and heat flux 400~800kW/m2, such as the application of solar thermal energy storage unit in high temperature solar thermal power stations.
Keywords :
numerical analysis; phase change materials; solar power stations; thermal energy storage; thermal power stations; heat charging process; heat flux; metal phase change thermal storage; numerical simulation; solar heating units; solar thermal energy storage; solar thermal power stations; solid-liquid phase change interface; Heat transfer; Metals; Phase change materials; Solar heating; Temperature distribution; Al-Si alloy; high temperature; phase change; solar energy; thermal storage;
Conference_Titel :
Intelligent System Design and Engineering Application (ISDEA), 2012 Second International Conference on
Conference_Location :
Sanya, Hainan
Print_ISBN :
978-1-4577-2120-5
DOI :
10.1109/ISdea.2012.694
