槽式腔体太阳能集热系统特性数值模拟及优化  

NUMERICAL SIMULATION AND OPTIMIZATION OF PARABOLIC TROUGH CAVITY SOLAR COLLECTOR SYSTEM

作　　者：冀孟恩 李明[2] 王云峰[2] 冯志康 王伟[1,2] Ji Meng'en;Li Ming;Wang Yunfeng;Feng Zhikang;Wang Wei(School of Physics and Electronic Information Technology,Yunnan Normal University,Kunming650500,China;Solar Energy Research Institute,Yunnan Normal University,Kunming650500,China)

机构地区：[1]云南师范大学物理与电子信息学院,昆明650500 [2]云南师范大学太阳能研究所,昆明650500

出　　处：《太阳能学报》2018年第11期3060-3068,共9页Acta Energiae Solaris Sinica

基　　金：NSFC-云南联合基金重点项目(U1137605);西南地区可再生能源研究与开发协同创新中心(05300205020516009);云南省可再生能源研究创新团队(2006PY03)

摘　　要：以槽式腔体太阳能集热系统的集热过程为研究对象,建立系统各个组成部件的传热模型,利用数值模拟进行仿真,并采用卡尔曼算法对数值模拟运算进行优化,结果表明:模拟温度平均误差在2%以内,且腔体集热效率和油箱储热效率的平均误差也有较大幅度下降。经实例分析验证优化运算下传热模型的适用性,进而运用数值模拟对系统进行优化研究,表明随着太阳辐射强度的升高而增加工质流量可维持油温在140~160℃,同时可提高腔体集热效率,从而实现稳定输出热能的策略。To study the heat collection process of theparabolic trough cavity solar system,the heat transfer models of each component was built and the simulation work was carried out as well as a numerical simulation was conducted for the optimization.The results showed that the average error of thesimulated temperature is about2%.The average error of the thermal efficiency of the cavity absorber and thermal efficiency of the storage tank are dropped significantly when the kalman algorithm is used to optimize the numerical simulation calculation.Meanwhile,the simulation analysis proved the applicability of the optimized heat transfer model.Results also illustrated that the flow of the working fluid increases with the increasing of the solar radiation intensity,which can keep the oil temperature at the range of 140-160℃. Furthermore,the thermal efficiency of the cavity absorber improved and achieved the implementation strategy of steadily exporting thermal energy.

关 键 词：槽式腔体太阳能集热系统 传热模型 数值模拟 卡尔曼算法 优化研究 

分 类 号：TK513.1[动力工程及工程热物理—热能工程]