Air-conditioning refrigerating system

Abstract

An air-conditioning refrigerating system that enables demand control based on operation control of an air-conditioning system and a refrigerating system is provided. The air-conditioning refrigerating system 1 is constructed to have an air-conditioning system 10 in which plural indoor units 34 are connected to an outdoor unit 32 to air-condition a building, a refrigerating system 12 in which plural low-temperature showcases 7 are connected to a rack system refrigerating machine 3 to cool each of the low-temperature showcases 7 , a main controller 4 for generating and outputting air-conditioning demand data for varying power consumption of the refrigerating system and refrigerating demand data for varying power consumption of the refrigerating system 12 on the basis of commercial power consumption of the building, and an external controller 14 that is provided separately from the refrigerating system 12 , receives the refrigerating demand data from the main controller 4 and controls the operation of the rack system refrigerating machine on the basis of the refrigerating demand data.

1 . An air-conditioning refrigerating system characterized by comprising:
 an air-conditioning system in which a plurality of indoor units are connected to an outdoor unit through a refrigerant pipe to air-condition the inside of a building;   a refrigerating system in which a plurality of showcases are connected to a refrigerating machine through a refrigerant pipe to cool each of the showcases;   a main control device for generating and outputting air-conditioning demand control data for controlling power consumption of the air-conditioning system and refrigerating demand control data for controlling power consumption of the refrigerating system on the basis of consumed power; and   an external control device that is provided separately from the refrigerating system, receives the refrigerating demand control data from the main control device and controls an operation of the refrigerating machine on the basis of the refrigerating demand control data.   
     
     
         2 . The air-conditioning refrigerating system according to  claim 1 , wherein the external control device is configured to acquire control setting information required for control of a main element for determining cooling capacity of the refrigerating machine, and controls the main element of the refrigerating machine on the basis of an operation state of the refrigerating machine and the control setting information. 
     
     
         3 . The air-conditioning refrigerating system according to  claim 2 , wherein the external control device is configured to acquire, as the control setting information, compressor control setting information required for capacity control of a compressor installed in the refrigerating machine, and controls a capacity of the compressor on the basis of low-pressure side pressure of the refrigerating machine and the compressor control setting information. 
     
     
         4 . The air-conditioning refrigerating system according to  claim 3 , wherein the external control device is configured to acquire, as the control setting information, condenser control setting information required for condensation capacity control of a condenser installed in the refrigerating machine, and controls a condensation capacity of the condenser on the basis of a high-pressure side pressure of the refrigerating machine and the condenser control setting information. 
     
     
         5 . The air-conditioning refrigerating system according to  claim 4 , wherein the main control device controls the air-conditioning system in priority to the refrigerating system on the basis of power consumption. 
     
     
         6 . The air-conditioning refrigerating system according to  claim 4 , wherein when the power consumption of the refrigerating system is controlled to be varied, the main control device controls the condensation capacity of the condenser in priority to the capacity of the compressor. 
     
     
         7 . The air-conditioning refrigerating system according to any one of  claims 1  to  6 , wherein the refrigerating machine is a refrigerating machine that is freely constructed by arbitrarily selecting main elements for determining a cooling capacity from some types.