某冰蓄冷项目运行策略分析

结合某办公建筑,对3种冰蓄冷运行策略进行对比分析。结果显示:3种运行策略日总移峰电量分别为28575 kW·h,28395 kW·h和28215 kW·h,日移高峰电量分别为16785 kW·h,21645 kW·h和17415 kW·h,单日节省电费分别为12464元,13082元和13509元;运行策略3的日总移峰电量最低,经济效益最高。指出冰蓄冷运行策略不能采用恒定制冷机组制冷量的运行方式,要综合考虑系统的负荷特征、融冰释冷量比例及制冷机组效率等因素。

Operation strategy of an ice storage project

Three typical ice storage operation strategies are analyzed contrastively based on one actual project. The results show that the daily total peak-shifting power of the three strategies are 28 575 kW·h, 28 395 kW·h and 28 215 kW·h respectively. The peak electricity quantity of daily shift are 16 785 kW·h, 21 645 kW·h and 17 415 kW·h respectively. The single-day savings in electricity are 12 464 yuan, 13 082 yuan and 13 509 yuan respectively. The daily total peak-shifting power of the third operation strategy is the lowest, while it has the best economic benefit. It is pointed out that the ice storage operation strategy should not adopt the operation mode of constant cooling capacity for refrigeration unit, and the load characteristics of the system, the ratio of ice discharging capacity and cooling capacity, as well as the efficiency of the refrigeration unit should be considered.