NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER PROCESS OF SOLID MEDIA THERMAL ENERGY STORAGE UNIT
A sensible heat storage unit with a hollow cylinder of solid media was studied semi-analytically. The heat transfer process in the heat storage medium was solved by using an integral approximate method. The forced convective heat transfer inside the tube was coupled with the heat conduction in the heat storage media. This method enables evaluation of the performance of the storage device in transient conditions. For the operation considerations, only fully developed turbulent flow is calculated. Different heat transfer fluids such as water and air with variable thermal properties dependent of temperature are used in calculations. Concrete and cast iron are selected as heat storage materials. From the simulation results presented in this paper, the thermal conductivity, the distance between the tubes, heat transfer fluid, tube size and flow velocity are the key parameters for such heat storage unit design.
Fengwu Bai Zhifeng Wang Xiao Liye
Institute of Electrical Engineering, CAS, P.O.Box 2703 Beijing 100080, China Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）