摘要
本文建立间接式制冷系统冷库几何模型,冷库尺寸长×宽×高为10 m×9 m×4 m,末端为风机盘管形式。利用CFD模拟研究了该冷库模型中安装多孔板(固定孔隙率40%)以及多孔板安装高度对空载冷库温度场和速度场的影响。模拟结果如下:在距离库顶1.2 m的位置安装多孔介质板后,可以降低库内Z方向面平均温度,库内Z方向面平均流速在0.1~0.14m/s之间。距离库顶1.2m时安装多孔介质板,不均匀性系数、速度极差、温度极差、温度偏差总体偏小,表明冷库各个平面内的温度、流速差别较小,流场均匀性好,且具有较大冷库储存空间。距离库顶1.2 m时,安装多孔介质板最有利于优化冷库内气流组织。
In this paper,the geometric modeling of indirect refrigeration system cold storage is established(10m×9m×4m)with a fan coil unit at the end.The influence of installing porous plates(with a fixed porosity of 40%)and the installation height of porous plates on the temperature and velocity fields of the empty cold storage model was studied using CFD simulation.The simulation results are as follows:After installing a porous media plate 1.2 m away from the top of the warehouse,the average temperature in the Z-direction plane inside the warehouse can be reduced,and the average flow velocity in the Z-direction plane inside the warehouse is between 0.1 and 0.14 m/s.When installing a porous media plate at a distance of 1.2 m from the top of the cold storage,the non-uniformity coefficient,velocity range,temperature range,and temperature deviation are generally small,indicating that the temperature and flow rate differences in each plane of the cold storage are small,the flow field uniformity is good,and there is a large storage space for the cold storage.When the distance from the top of the cold storage is 1.2m,installing a porous media plate is most conducive to optimizing the airflow organization inside the cold storage.
作者
孙欢
靳涛
季晴
胡开永
Sun Huan;Jin Tao;Ji Qing;Hu Kaiyong(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin,300134,China;Tianjin Jingwei Hengrun Technology Co.Ltd.,Tianjin,300385,China)
出处
《冷藏技术》
2023年第2期52-58,共7页
Journal of Refrigeration Technology
基金
天津市优秀科技特派员项目(No.22YDTPJC00250)
天津市研究生科技创新项目(2022SKYZ058)。
关键词
间接式制冷系统
气流组织
数值模拟
多孔板
indirect refrigeration system
air distribution
numerical simulation
perforated plate
