立式太阳能热气流电站运行性能研究.doc

中国工程热物理学会传热传质学
学术会议论文编号:123319
立式太阳能热气流电站运行性能研究
周艳,李庆领,巢军,范夕燕
(青岛科技大学机电工程学院,山东青岛 266061)
(Tel:**********, Email:zhouyanqd@)
摘要针对立式集热板太阳能热气流发电系统,选用石蜡相变材料作为蓄热层材料,研究了在太阳辐射与蓄热层耦合作用时电站系统的运行性能,比较了不同蓄热层厚度时系统运行性能。结果表明:无蓄热层时系统内空气流速与日太阳辐射的变化规律相似,夜间电站系统无电能输出;当电站系统带蓄热层时,,且由于蓄热层的热量储存能力逐天增加而使系统夜间最大流速逐天增加。,结果表明,当蓄热层厚度较大时,由于其白天储存的热量更多,在夜间释放的热量也越多,。
关键词热气流电站;太阳能;石蜡;相变蓄热;非稳态模拟
中图分类号:TK124 文献标识:A
Study on running performance of solar chimney power plant system with vertical collector
ZHOU Yan, LI Qing-ling , CHAO Jun, FAN Xi-yan
(College of Mechanical and Electronical Engineering, Qingdao University of Science and Technology, Shandong Qingdao 266061)
Abstract: Towards the characteristics of the solar chimney power plant system with vertical heat collector, the phase change material of paraffin is chosen as the heat storage layer, the unsteady conjugate numerical simulation is used to study the influences of heat storage layer on the system operation. The simulation results show that: the change of air velocity is similar to that of solar radiation and the velocity does not rise at night when there is no heat storage layer in the system. Because of the heat storage of paraffin in the system, the air maximum velocity of the system can reach at night. At the same time, the operating states of system pared