低温粮食储存用相变蓄冷装置性能强化研究  

Numerical research on the cooling energy storage enhancement in a phase change material energy storage unit for the storage of grain in low temperature

作　　者：杨俊俊 韩娣 王夏昕 吴志成 谢鹏宇 徐晓丽 王艳梅 夏春杨 Yang Junjun;Han Di;Wang Xiaxin;Wu Zhicheng;Xie Pengyu;Xu Xiaoli;Wang Yanmei;Xia Chunyang(Wuxi COFCO Engineering&Technology Co.,Ltd.,Wuxi 214035;McVille Central Air Conditioning Co.,Ltd.,Nanjing 210000;College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127)

机构地区：[1]无锡中粮工程科技有限公司,无锡214035 [2]麦克维尔中央空调有限公司,南京210000 [3]扬州大学电气与能源动力工程学院,扬州225127

出　　处：《粮食与食品工业》2023年第3期48-52,共5页Cereal & Food Industry

摘　　要：基于相变材料的蓄冷技术可将电力供给峰期的制冷负荷转移到谷期,实现节省运行费用、减小装机容量等目的。本文基于enthalpy-porosity方法建立了分形树状肋片结构的相变蓄冷装置释冷过程的二维非稳态理论模型并进行了数值模拟,获得了释冷过程中的形貌特征与温度场分布特性,评估了不同肋参数(肋高、肋厚、肋数)蓄冷装置的释冷效果,给出了粮食低温储存蓄冷装置的肋片优化结构。Cooling energy based on phase change materials(PCM)is widely utilized in saving the operating costs and reduce installed capacity of HVAC systems.A 2D transient numerical model is developed based on enthalpy-porosity method to study the cooling energy releasing process enhanced by fractal tree shaped metal fins.The melting front and temperature distribution is obtained.The effect of fin height and fin thickness is discussed.And the optimal design of fins in the PCM based cooling energy storage units for grain storage in low temperature is proposed.

关 键 词：相变蓄冷材料 分形树状肋片 相变 数值模拟 

分 类 号：TS201[轻工技术与工程—食品科学]