制冷装置增加夜间运行时间的性能分析

摘要

介绍了福建省目前的分时电价政策.基于冷库实例,模拟计算了制冷装置增加夜间运行时间,采用不同蓄冷运行方案的运行费用.结果显示,理想条件下冷库的运行电费可节省47.3%以上,现场调研的某冷库运行电费可减少约31%.根据气象台的逐时气象数据统计,厦门市夜间湿球温度下降1.2～1.8℃.计算表明,制冷装置夜间运行的COP因此比白天提高1.6%-2.92%.%The timeshare electricity price policy in Fujian Province was introduced in this paper. Different operating modes that used thermal energy storage and increased running time in nighttime were simulated based on a selected warehousing facility.The results show that the operating electricity bill for refrigerated warehouses can be reduced by 47.3％ even more under ideal condition. The operating electricity bill for the observed warehouse can be reduced by 31％. The nighttime wet bulb temperatures were 1.2 - 1.8℃ lower than that of daytime in Xiamen city based on hourly temperatures from Xiamen Meteorological Agency. It was indicated from calculation that the COPs of refrigeration plants at nighttime will be improved by 1.6％ to 2.92％.