VRF air conditioning metering and charging system based on BACnet

According to the characteristics of VRF air conditioning system, studies the method and feature of its metering and charging, puts forward an architecture of VRV air conditioning metering and charging system, and develops a VRF air conditioning metering and charging system based on BACnet standard, which is of low-cost, scientific and fair. Moreover, remote access and system integration to building management system (BMS) can be realized on Web technology and BACnet standard interface respectively.