Collision of different energy saving control technologies in air conditioning chilled water systems

Based on engineering data of the building energy metering system BMSII, analyses the effects of different energy saving control technologies including constant pressure difference control, constant temperature difference control, return water temperature control, index circuit pressure difference control, variable pressure difference control and minimum resistance control on terminal service quality and system energy consumption. Presents the control strategy of terminal cooling capacity initiative control, which is an air conditioning chilled water pump frequency conversion energy saving control strategy relying on modern communication technology to realize statistical analysis of opening command signals of terminal control valves and replacing mechanical control technology with digital control technology.