市电-光伏协同调控下光伏冰蓄冷冷库系统的运行特性

Experiment on the PV-driven Cold Storage System with Ice Storage under the Coordinated Regulation of Grid-electricity and PV Energy

以太阳能光伏冷库系统为研究对象,采用5.4 kW分布式太阳能光伏发电为动力源直接驱动压缩机制冰蓄冷,对系统在市电与光伏协同模式下连续一周的运行特性相关参数进行了实验.在市电-光伏的协同工作模式下,白天平均制冷量为56.48 MJ,平均储冰量为118.56 kg,夜间冷库系统的平均耗冷量为34.77 MJ,对应的平均耗冰量为99.27 kg;光伏直驱连续运行模式下系统平均制冷性能系数(COPref)达到0.83,系统实现了维持5℃果蔬冷藏温度的连续稳定供冷运行.

This paper focused on the experiments on PV-driven cold storage system with ice storage.A 5.4 kW distributed solar PV power generation system was applied as the power source to directly drive the compressor to make ice and cold storage.Combined with the ice storage technology,the system performance was analyzed under a consecutive operation for a week under the coordinated regulation of electricity and PV energy.The experimental results showed that under the coordinated regulation of electricity and PV energy,the average weekly refrigerating capacity was 56.48 MJ,and the average weekly ice storage capacity was 118.56 kg.The average weekly cooling capacity of the cold storage system at night was 34.77 MJ,and the corresponding average ice consumption was 99.27 kg.In the PV direct driven mode,the average refrigeration performance coefficient(COP ref)of the system was 0.83.The system realized continuous and stable operation to maintain 5℃temperature for fruits and vegetables preservation.