Examining the Performance of Portable Cold-storage Box Based on Phase-change Technology
Temperature failure at the end of cold-chain transportation is common.Based on phase-change technology,a cold energy storage box suited for the end of cold-chain transport below-18 ℃ was developed.The temperature field characteristics and cold-storage performance of the cold-storage box under the influence of the environmental temperature,the thickness of the vacuum insulated panel(VIP),relative positions of the phase-change material(PCM)and VIP,type of PCM,and other parameters were examined.The study revealed that the cold-storage box had strong immunity to variations in the ambient temperature,and the maximum effective cold preservation time can be extended to 29.26 h when assembling the vacuum insulated panels.When the VIPs were placed on the outer layer of the corresponding PCM panels,the effective cold preservation period increased by 54.3％.Four types of organic PCMs with different phase-change temperatures were examined for use in cold-storage boxes.It was determined that 2-octanone with a phase transition temperature of-21.55 ℃ had the optimal performance in terms of cold preservation time,uniformity coefficient,and power consumption.The bottom plate had the greatest impact on the overall cold-storage capacity as evidenced by its 0.454 individual plate factor.
cold storage unitcold thermal energy storagephase-change materialcoefficient of performance
万方数据
维普
