基载制冷机在冰蓄冷系统中运行模式研究
Operation strategy of base chiller in ice cool storage systems
摘要：
以北京某20万m2采用内融冰制冷系统的办公建筑为例，对冰蓄冷系统中基载制冷机的设置方式及运行策略进行了分析。结果表明：在北京地区的大型办公类建筑中，综合考虑系统装机容量、全年运行能耗、全年运行费和系统初投资等因素，基载制冷机全天运行比仅夜间运行更优，基载制冷机与蓄冰装置串联比并联更优；对于峰谷电价比小于等于3的地区，与北京相比（峰谷电价比大于3），基载制冷机全天运行比仅夜间运行具有更好的经济性；对于采用外融冰的冰蓄冷系统，与内融冰系统相比，基载制冷机和蓄冰装置串联具有更好的节能性。
Abstract：
Taking a 200 000 m2 office building with internal ice melting storage system in Beijing as an example, analyses the installation mode and operation strategy of the base chiller in ice cool storage systems. The results show that considering the factors such as the installation capacity of the system, the annual energy consumption, the annual operating costs and the initial investment of the system, the full-day operation of the base chiller is better than that of the night operation only for the large office buildings in Beijing, and the series connection between the base chiller and the ice storage device is better than the parallel connection. Compared with Beijing（the peak-valley electricity price ratio is more than 3）, the full-day operation of the base chiller is more economical than that of the night operation only where the peak-valley electricity price ratio is less than 3. For ice cool storage system with external ice melting, the series connection between the base chiller and ice storage device is more efficient than that of internal ice melting storage system.
Keywords:ice cool storage system, base chiller, ice storage device, peak-valley electricity price ratio, operation energy consumption