| 摘要 |
PROBLEM TO BE SOLVED: To operate efficiently and uniformly according to the power consumption of a building, by setting the actual horsepower of a rated outdoor unit with a fixed capacity and a variable capacity outdoor unit, and by giving priority to the operation of the variable capacity outdoor unit at the actual horsepower to set the number of rated outdoor units to be operated. SOLUTION: A plurality of outdoor units 1, 2 and 3 are connected by an equalizing oil pipe. Fixed capacity compressors 5 and 6 are stored in the outdoor units 1 and 2, and a variable capacity compressor 7 (an inverter) is stored in the outdoor unit 3. A central control device 20 comprises two controllers 22 and 23. The controller 22 inputs the operating condition or the like of each of indoor units 8, 9 and 10 to figure out the required horsepower of the air conditioning load of a whole building, and also figures out the rate according to the value of bit from a measuring instrument 21 to calculate and set actual operating horsepower. The controller 23 sets the number of outdoor units 1, 2 and 3 to be operated and the operating conditions according to the actual operating horsepower. The operating conditions of each of the outdoor units 1, 2 and 3 are determined by the output from the controller 23, and they are operated. |
