AIR CONDITIONING SYSTEM

摘要

An air conditioning system is provided to control cooling/heating operation of each cooling/heating area independently in the single air conditioning system, wherein a wind volume is controlled according to an opening degree of a damper for minimizing noise generation. An air conditioning system includes a PAC unit(110) for supplying cool air to a chamber(150) and sensing a temperature of a cooling water return line, and damper manipulators(D/A1-D/A5) for driving dampers(D1-D5) of cooling/heating areas according to opening/closing degree control signals for controlling the flow of the cool air. Hot water valves(H/V1-H/V5) are connected to hot water supply pipes and mounted in the cooling/heating areas for opening/closing hot water flows toward the heating areas. Temperature controllers(R/U1-R/U5) are mounted in the cooling/heating areas for setting modes of the cooling/heating areas and target cooling/heating temperatures, and generate the opening degree control signals and the valve driving signals according to cooling/heating control signals. A pressure sensor(120) senses pressure in the chamber. A cooling water temperature sensor(161) senses a temperature of the cooling water in the cooling water return line. A cooling water valve(160) controls a flow rate of the cooling water in the cooling water return line according to a cooling water supply control signal. A main controller(130) controls an rpm of a fan(140) of the PAC unit according to the sensed pressure and a set pressure proportionally, generates the PAC driving signal and the cooling/heating control signals according to the set mode, the target temperature and temperatures of the cooling/heating areas, and generates the cooling water supply control signal according to the sensed cooling water temperature.