立式集热板式太阳能热气流电站系统研究进展 周艳.docVIP

中国工程热物理学会 传热传质学 学术会议论文 编号： 立式集热板式太阳能热气流电站系统 研究进展 周艳，王莉，宫园园，解小庆，李庆领 （青岛科技大学机电工程学院，山东 青岛 266061） （电话 邮箱：zhouyanqd@163.com） 摘要： 由于立式集热板太阳能热气流电站系统中气流的流动过程温度及压力的耦合作用，气流的密度随电站系统高度的增加而不断变化，利用UDF编程工具对密度与温度和压力的关系式及密度随高度的变化关系式进行编程，并导入FLUENT计算软件中，通过数值计算得到了太阳能热气流电站系统内的流动传热特性，并将该结果与设置恒空气密度模型的数值计算结果及实验结果进行比较，结果表明：当温压耦合下的数值计算结果与实验值差28%，较设密度为恒定值与实验值差41%，说明立式集热板太阳能热气流系统是在温压耦合的状态下运行的。 关键词：太阳能；热气流电站；立式集热板；温压耦合；UDF编程 中图分类号：TK124 文献标识：A The Research Process of the Chimney Power Plant System with Vertical Heat Collector Z Yan WANG Li GONG Yuan-Yuan XIE Xiao-Qing LI Qing-Ling (College of Electromechanical Engineering, Qingdao University of Science and Technology, Shandong, Qingdao, 266061) Abstract The density of airflow changes with the increasing height of the chimney since the temperature and pressure couple effect during the air flow process of the chimney power plant system with vertical heat collector. A program was imported into FLUENT to describe the changes of parameters in the system, which was programmed by UDF considering the relation between density and temperature and pressure, and changes of density with height. The characteristics of flow and heat transfer were obtained to compare with the simulation results and experimental results of the constant air density model. The error between result when considering the impact of temperature and pressure on air density with that obtained with the experimental value was 28%,compared with error of 41% before doing simulation. It turned out that the result was more consistent with the experimental data when considering the influence of temperature and pressure on air density. Therefore, the solar chimney power plants with vertical collectors run in the conditions of temperature coupled with pressure. Key words Solar energy; Solar chimney power plant; Temperature-pressure c