数据中心湖水源自然冷却系统的节能模拟优化

Simulation Optimization of Energy Consumption for Data Center Lake Natural Cooling System

利用Trnsys仿真平台,分析了湖水源自然冷源系统的运行参数对能耗的影响。以能耗函数为目标,优化制冷系统的最佳送风温度和冷冻水供水温度。模拟结果表明:该系统全年的总能耗随机房送风温度与冷冻水温度温差的增大呈先减小后增大的趋势,温差为7℃时,系统能耗达到最小。设定温差为7℃,优化机房送风温度和冷冻水供水温度,当机房送风温度为21℃,冷冻水供水温度为14℃时,系统能耗最低。其运行能耗相比优化前(机房送风温度为12℃、冷冻水供水温度为18℃)节能34.3%,相比于传统制冷系统节能59.7%。

Based on the Tmsys simulation platform, the influence of operating parameters of the natural cold source system on energy consumption is analyzed; with the energy consumption function as the objective, the temperatures of air supply and chilled water are optimized. The simulation results show that the total energy consumption of the system increases with the increase of the temperature difference between the air supply temperature and the chilled water temperature in the random room, which decreases at first and then increases. When the temperature difference is 7 ℃and the energy consumption of the system reaches the minimum. Set the temperature difference as 7 ℃ and optimize the temperatures of air supply and chilled water, the energy consumption of the system reached the minimum when the temperature of supply air is 7 ℃and the chilled water temperature is 14 ℃. The energy consumption of the system is 34.3% less than that of the original refrigeration system （the supply air temperature is 12 ℃, the chilled water temperature is 18 ℃） and 59.7% less than that of the traditional refrigeration system.