Air-conditioning system control device and air-conditioning system control method

Patent metadata

Field	Value
Publication number	US-2016109147-A1
Application number	US-201314890288-A
Country	US
Kind code	A1
Filing date	Jun 17, 2013
Priority date	Jun 17, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

An air-conditioning system controller controls one or plural air-conditioning apparatus installed in a building, and includes a processor that determines an air-conditioning apparatus control command so that a preset evaluation index satisfies a preset condition in a preset control-target period under a preset constraint. The processor divides the control-target period into time sections, determines a room-temperature change permissible range within which a room temperature satisfies the constraint, determines a heat-load change permissible range, based on the room temperature, the room-temperature change permissible range, a heat load estimation, and a heat load to be processed by each air-conditioning apparatus, and determines, for each time section, as the air-conditioning apparatus control command, an operation frequency and start-stop of the air-conditioning apparatus, based on the heat-load change permissible range and an operation efficiency of the air-conditioning apparatus.

First claim

1 . An air-conditioning system control device configured to control one or a plurality of air-conditioning apparatus installed in a building, comprising:
a processor configured to obtain operation data of the one or plurality of air-conditioning apparatus, configured to obtain a heat load estimation for the building, configured to determine an air-conditioning apparatus control command so that a preset evaluation index satisfies a preset condition in a preset control-target period under a preset constraint, configured to include time sections set therein, to divide the control-target period into a plurality of time periods by one or a plurality of preset division intervals, configured to determine a room-temperature change permissible range, a room temperature included in the operation data satisfying the constraint within the room-temperature change permissible range, configured to determine a heat-load change permissible range, based on the room temperature included in the operation data, an upper-limit room-temperature set value and a lower-limit room-temperature set value on the room-temperature change permissible range, a building component physical property value indicating a heat-insulating property of the building and a heat-storage property of the building, the heat load estimation, and a heat load to be processed by the one air-conditioning apparatus or a heat load to be processed by each of the plurality of air-conditioning apparatus, and configured to determine, for each of the plurality of time sections, as the air-conditioning apparatus control command, an operation frequency and start-stop of the one or plurality of air-conditioning apparatus, based on the heat-load change permissible range and an operation efficiency of the one air-conditioning apparatus or an operation efficiency of each of the plurality of air-conditioning apparatus.

2 . (canceled)

3 . The air-conditioning system control device of claim 1 , wherein the processor
is configured to determine an optimum heat load of the one air-conditioning apparatus or an optimum heat load of each of the plurality of air-conditioning apparatus, based on the heat-load change permissible range and an air-conditioning apparatus performance characteristic related to the operation efficiency of the one air-conditioning apparatus or the operation efficiencies of the plurality of air-conditioning apparatus, so that the evaluation index satisfies the preset condition in the control-target period under the constraint.

4 . The air-conditioning system control device of claim 3 , wherein the processor
is configured to determine an operation frequency and start-stop of the one or plurality of air-conditioning apparatus, based on the optimum heat load and the air-conditioning apparatus performance characteristic, the operation frequency and the start-stop being necessary to process the optimum heat load.

5 . The air-conditioning system control device of claim 1 , wherein the constraint
includes any one of or a combination of two or more of a first condition that the room temperature is maintained between the upper-limit room-temperature set value and the lower-limit room-temperature set value, a second condition that a rate of temporal change in the room temperature is maintained in a preset rate of temporal change in room temperature, a third condition that a power consumption of the air-conditioning apparatus is maintained within a preset range of power consumption, and a fourth condition that a number of start-stops of the air-conditioning apparatus is maintained up to a predetermined number of times.

6 . The air-conditioning system control device of claim 3 , wherein the evaluation index includes
any one of or a combination of two or more of a power consumption of the one air-conditioning apparatus or a power consumption of each of the plurality of air-conditioning apparatus in the control-target period, a running cost of the one air-conditioning apparatus or a running cost of each of the plurality of air-conditioning apparatus in the control-target period, an air-conditioning apparatus efficiency determined from the air-conditioning apparatus performance characteristic, a difference between the room temperature and a set temperature, and a rate of temporal change in the room temperature.

7 . The air-conditioning system control device of claim 3 , wherein the processor
is configured to determine an operation mode of the one air-conditioning apparatus or an operation mode of each of the plurality of air-conditioning apparatus, based on the optimum heat load.

8 . An air-conditioning system control method for controlling one or a plurality of air-conditioning apparatus installed in a building, comprising:
obtaining operation data of the one or plurality of air-conditioning apparatus, obtaining a heat load estimation for the building, and determining an air-conditioning apparatus control command so that a preset evaluation index satisfies a preset condition in a preset control-target period under a preset constraint, in the determining the air-conditioning apparatus control command, time sections to divide the control-target period into a plurality of time periods by one or a plurality of preset division intervals are set, a room-temperature change permissible range is determined, a room temperature included in the operation data satisfying the constraint within the room-temperature change permissible range, a heat-load change permissible range is determined, based on the room temperature included in the operation data, an upper-limit room-temperature set value and a lower-limit room-temperature set value on the room-temperature change permissible range, a building component physical property value indicating a heat-insulating property of the building and a heat-storage property of the building, the heat load estimation, and a heat load to be processed by the one air-conditioning apparatus or a heat load to be processed by each of the plurality of air-conditioning apparatus; and for each of the plurality of time sections, as the air-conditioning apparatus control command, an operation frequency and start-stop of the one or plurality of air-conditioning apparatus is determined, based on the heat-load change permissible range and an operation efficiency of the one air-conditioning apparatus or operation efficiencies of the plurality of air-conditioning apparatus.

9 . (canceled)

10 . The air-conditioning system control method of claim 8 , wherein, in the determining the air-conditioning apparatus control command,
an optimum heat load of the one air-conditioning apparatus or optimum heat loads of the plurality of air-conditioning apparatus is determined, based on the heat-load change permissible range and an air-conditioning apparatus performance characteristic related to the operation efficiency of the one air-conditioning apparatus or the operation efficiencies of the plurality of air-conditioning apparatus, so that the evaluation index satisfies the preset condition in the control-target period under the constraint.

11 . The air-conditioning system control method of claim 10 , wherein, in the determining the air-conditioning apparatus control command,
an operation frequency and start-stop of the one or plurality of air-conditioning apparatus is determined, based on the optimum heat load and the air-conditioning apparatus performance characteristic, the operation frequency and the start-stop being necessary to process the optimum heat load.

Assignees

• Mitsubishi Electric Corp

Inventors

• Uno Yoshitaka
• Yamamoto Takaya
• Motodani Mio

Classifications

• F24F11/57

  using telephone networks · CPC title

• F24F11/46 Primary

  Improving electric energy efficiency or saving · CPC title

• F24F11/64

  using pre-stored data · CPC title

• F24F11/58

  using Internet communication · CPC title

• F24F11/30 Primary

  for purposes related to the operation of the system, e.g. for safety or monitoring · CPC title