Optimal operation of parallel variable frequency chilled water pumps in air conditioning system

Based on the analysis of the safety and energy efficiency of multiple pumps in the modes of fixed and variable frequency combinations, mixed size and synchronization frequency, calculates the energy consumption of chilled water pumps in the different combinations. From the aspects of the highest efficiency and the minimum energy consumption, proposes that the chilled water pump operation should be correspond with the water chiller units and the pumps should be operated by frequency synchonization.