多台冷水机组联合运行空调系统的负荷优化分配

多台冷水机组联合运行系统中,各冷水机组大部分时间处于部分负荷运行状态.根据冷水机组的性能系数(COP)与其负荷率R之间关系的特性,提出一种新的负荷优化分配方法:将自适应方法用于获取R与COP的关系,进而建立系统能耗方程,利用最优化方法得到最优负荷分配率.结果表明,应用自适应方法获取R与COP的关系,并运用于多台冷水机组联合运行系统的在线运行控制,节能效果优于采用回归方法获取R与COP关系的优化策略.

The Optimal Loading Strategy of Multiple Chillers in HVAC Systems

In the multiple chillers system,the chillers are usually loaded partly in the most of running times.According to the relationship between COP and R of the system,an optimal loading strategy is presented.An adaptive method is employed to obtain the relation between R and COP,and the objective function of chillers system energy consumption is set up to obtain the optimal R through optimizing.The simulation results show that the strategy of using adaptive method to obtain the relationship between R and COP and incorporating it into online control in the multiple chillers system is better than the regression method for saving energy.