Primary-secondary Pumping System Efficiency Optimization Strategy

Generally,the primary-secondary pumping system adopts VFD (Variable Frequency Drives) technique to save energy. But its high efficiency field hasn't been involved in. To save energy,an efficiency optimization model for secondary pumps was established by qualifying their high efficiency field. And the efficiency optimization strategies of secondary pumps were presented for different configurations. The strategies are real time and can meet the requirements of optimal operation under different conditions. Control method is simple and energy saving effect is obvious by applying these strategies. These strategies can guide the secondary pumps' control.