Energy Saving of the Control Strategy of Main Pipe Differential Pressure and Differential Temperature on Chilled Water in Central Air-condition Systems

The water stability,energy-saving performance and the effects of energy consumption of pumps and chillers under conditions of different frequency conversion control strategies are analysed,which is based on the air conditioning load in the central air conditioning energy-saving renovation project of a special teaching building.Comprehensive energy saving rate is calculated and the control strategy of main pipe constant differential temperature whose comprehensive energy saving rate is 60.5% is determined as the optimum control strategy.