不同封装结构相变蓄冷板用于冷藏库数值模拟研究  

Numerical simulation of phase change cold storage plates with different packaging structures used in cold storage

作　　者：梁汉威 陈观生[1] 谢健 应文轩 程子杰 LIANG Hanwei;CHEN Guansheng;XIE Jian;YING Wenxuan;CHENG Zijie(School of Materials and Energy,Guangdong University of Technology,Guangzhou,Guangdong 510006,China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《食品与机械》2024年第1期135-139,144,共6页Food and Machinery

基　　金：国际科技合作项目(编号:2021GH14)。

摘　　要：目的:研究相变蓄冷在冷库错峰用电中的应用,提出更有效的蓄冷板封装结构。方法:针对冻结物冷藏库,设计多种相变蓄冷板封装结构,并建立相应的数值模型。通过数值模拟,在标准温度下(-18℃)测试不同封装结构蓄冷板的凝固蓄冷及融化放冷过程。比较平板蓄冷板和凹凸蓄冷板的异同,并分析不同蓄冷板对库内温度波动的影响。结果:3种特殊版型的蓄冷板中,30~75 mm规格的蓄冷板蓄冷效果最好,在8 h的蓄冷过程中,可比平板型蓄冷板多储存36.23%的冷量。此外,凹凸型封装蓄冷板的放冷能力也要优于平板封装蓄冷板的,能让冷库内温度更加均匀。结论:研究设计的凹凸面封装相变蓄冷板可以在冷库错峰用电中发挥更加有效的作用,能够稳定库内温度并降低能源消耗。Objective:To study the application of phase change energy storage in peak-shifting of cold storage electricity,and propose a more effective encapsulation structure for the cold storage plate.Methods:Multiple phase change cold storage plate encapsulation structures were designed for the frozen goods cold storage,and corresponding numerical models were established.Through numerical simulations,the solidification and melting cooling processes of different encapsulated cold storage plates were tested at standard temperatures(-18℃).The similarities and differences between flat and concave-convex cold storage plates were compared,and the impact of different cold storage plates on temperature fluctuations within the storage was analyzed.Results:Among the three special types of cold storage plates,the 30~75 mm size had the best cold storage capacity.It stored 36.23%more cold during an eight-hour energy storage process than the flat type energy storage plate.In addition,the cooling capacity of the concave-convex encapsulated cold storage plate was also better than that of the flat encapsulated cold storage plate,making the temperature inside the cold storage more uniform.Conclusion:The concave-convex encapsulated phase change cold storage board designed in this study can play a more effective role in the peak-shifting of cold storage electricity,stabilize the temperature within the storage,and reduce energy consumption.

关 键 词：储能技术 冷库 蓄冷板 数值模拟 

分 类 号：TB657[一般工业技术—制冷工程]