大型体育中心冰蓄冷空调系统性能实测与优化研究

Performance Measurement and Optimized Study of Ice-Storage Air Conditioning System in Large Sports Center

根据深圳市某体育中心冰蓄冷空调系统1年的实测运行数据,测算出建筑全年冷负荷以及冰蓄冷机组及基载机组能效值,并根据峰谷平电价测算出不同时段冰蓄冷机组及基载机组单位制冷量(kWh)的运行费用,冰蓄冷机组运行费用相对最低,为0.096元/kWh,基载机组峰值时段运行费用相对最高,为0.28元/kWh。在分析上述空调系统运行费用的基础上,有针对性地提出了空调系统经济运行的优化方法,包括合理分配释冰时段、增大蓄冷量。测算结果表明:合理分配释冰时段,可节省年运行费用20万元,节省率达5%;增大蓄冰量可节省年运行费用92万元,节省率达23%。

The Sport Center＇s annual cooling load, values of energy efficiency of ice-storage unit and base-carrier unit are calculated according to 1 year＇ s actual operation data of ice-storage air conditioning system in some Sports Center of Shenzhen City, as well as calculate operation cost of unit refrigerating capacity （kWh） of ice-storage units and base-carrier units in different time period, according to flat electricity price of the peak and valley period. Operation costs of ice-storage unit is relative to the minimum, 0. 096 Yuan/kWh; while operation cost of base- carrier unit is relative to the highest during the peak period, 0.28 Yuan/kWh. On the basis of analyzing operating cost of the air conditioning system, the optimization method of economic operation of air conditioning system is put forward, including the rational allocation of time period for melting ice, increasing the ice-storage capacity. The calculation results show that ： it can save operating costs 200 000 Yuan annually if distributing ice-melting period reasonably, and saving rate reaches 5% ; annual operating costs can save 920 000 Yuan if increasing the ice storage amount, with saving rate of 23%.