Thermal management of buildings using intelligent and autonomous set-point adjustments

• US 10,401,044 B2
• Filed: 07/07/2015
• Issued: 09/03/2019
• Est. Priority Date: 07/07/2015
• Status: Active Grant

• Current Assignee: Utopus Insights, Inc. (Vestas Wind Systems A/S)
• Original Assignee: Utopus Insights, Inc. (Vestas Wind Systems A/S)
• Inventors: Chandan, Vikas, Charbiwala, Zainul, Chintala, Rohit, Ghai, Sunil Kumar
• Primary Examiner(s): Lo, Kenneth M
• Assistant Examiner(s): Huntley, Michael J
• Application Number:
  US14/793,066
• Publication Number:
  US 20170010013A1
• Time in Patent Office: 1,519 Days
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 2219/2642 Domotique, domestic, home control, automation, smart house

Abstract

Methods, systems, and computer program products for thermal management of buildings using intelligent and autonomous set-point adjustments are provided herein. A method includes capturing a user-selected setting that represents a desired balance between (i) energy usage and (ii) thermal comfort associated with a building; capturing, via a communication link with one or more hardware devices associated with thermal management of the building, one or more items of real-time information pertaining to the thermal management of the building; determining one or more set-point temperatures for the building based on (i) the user-selected setting, (ii) the items of real-time information pertaining to the thermal management of the building, and (iii) one or more constraints; and outputting the set-point temperatures to the hardware devices associated with the thermal management of the building for execution of a thermal management schedule to be carried out in accordance with the set-point temperatures.

Claims

1. A method, comprising:

capturing, from a user, a user-selected setting that represents a desired balance between energy usage and thermal comfort associated with a building;

capturing, via a communication link with one or more hardware devices associated with thermal management of the building, real-time information pertaining to the thermal management of the building including real-time occupancy information and ambient temperature;

receiving, from the user, a planning window indicating a duration of time in the future;

determining a cooling rate to limit peak cooling output of the hardware devices associated with thermal management of the building, the cooling rate based on a product of a first difference and a second difference, the first difference being based on a difference between an expected zone temperature and one or more set-point temperatures and the second difference being based on a difference between the expected zone temperature and an air supply temperature;

determining the one or more set-point temperatures for the building during the planning window, the determining of the one or more set-point temperatures being based on the user-selected setting and the real-time information-pertaining to the thermal management of the building, the one or more set-point temperatures being within a range of comfort temperatures for occupants of the building, the determining of the one or more set-point temperatures being constrained to maintain the expected zone temperature in the planning window and a minimum cooling rate during the planning window;

determining a thermal management schedule for the one or more hardware devices associated with the thermal management of the building with the one or more set-point temperatures during the planning window;

configuring the one or more hardware devices associated with the thermal management of the building with the determined thermal management schedule; and

performing thermal management of the building based on the thermal management schedule in accordance with the one or more set-point temperatures to reduce the energy usage associated with the building while maintaining thermal comfort of the building.

2. The method of claim 1, comprising:

enabling the user to provide the user-selected setting.

3. The method of claim 2, wherein said enabling comprises providing a configurable knob, wherein manipulation of the knob renders the user-selected setting.

4. The method of claim 1, wherein the determining one or more set-point temperature for the building is further based on constraints pertaining to a building code.

5. The method of claim 1, wherein the real-time information comprise real-time occupancy information associated with the building derived from one or more sensors.

6. The method of claim 5, wherein the one or more sensors comprises a carbon dioxide sensor.

7. The method of claim 1, wherein the one or more hardware devices associated with the thermal management of the building comprises an actuator.

8. The method of claim 7, wherein the one or more items of real-time information comprise compressor revolutions per minute data associated with the actuator.

9. The method of claim 7, wherein the one or more items of real-time information comprises compressor duty cycle information associated with the actuator.

10. The method of claim 1, comprising:

storing the one or more determined set-point temperatures in a storage component.

11. The method of claim 1, wherein the planning window is based on one or more items of historical information pertaining to the thermal management of the building.

12. A computer program product, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computing device to cause the computing device to:

capture, from a user, a user-selected setting that represents a desired balance between energy usage and thermal comfort associated with a building;

capture, via a communication link with one or more hardware devices associated with thermal management of the building, real-time information pertaining to the thermal management of the building including real-time occupancy information and ambient temperature;

receive, from the user, a planning window indicating a duration of time in the future;

determine a cooling rate to limit peak cooling output of the hardware devices associated with the thermal management of the building, the cooling rate based on a product of a first difference and a second difference, the first difference being based on a difference between an expected zone temperature and one or more set-point temperatures and the second difference being based on a difference between the expected zone temperature and an air supply temperature;

determine the one or more set-point temperatures for the building during the planning window, the determining of the one or more set-point temperatures being based on the user-selected setting and the real-time information pertaining to the thermal management of the building, the one or more set-point temperatures being within a range of comfort temperatures for occupants of the building, the determining the one or more set-point temperatures being constrained to maintain the expected zone temperature in the planning window and a minimum cooling rate during the planning window;

determine a thermal management schedule for the one or more hardware devices associated with the thermal management with the one or more set-point temperatures during the planning window;

configure the one or more hardware devices associated with the thermal management of the building with the determined thermal management schedule; and

perform thermal management of the building based on the thermal management schedule in accordance with the one or more set-point temperatures to reduce the energy usage associated with the building while maintaining thermal comfort of the building.

13. The computer program product of claim 12, wherein the planning window is based on one or more items of historical information pertaining to the thermal management of the building.

14. A system comprising:

a memory; and

at least one processor coupled to the memory and configured for;

capturing, from a user, a user-selected setting that represents a desired balance between energy usage and thermal comfort associated with a building;

capturing, via a communication link with one or more hardware devices associated with thermal management of the building, real-time information pertaining to the thermal management of the building including real-time occupancy information and ambient temperature;

receiving, from the user, a planning window indicating a duration of time in the future;

determining a cooling rate to limit peak cooling output of the hardware devices associated with the thermal management of the building, the cooling rate based on a product of a first difference and a second difference, the first difference being based on a difference between the expected zone temperature and one or more set-point temperatures and the second difference being based on a difference between the expected zone temperature and an air supply temperature;

determining the one or more set-point temperatures for the building during the planning window, the determining of the one or more set-point temperatures being based on the user-selected setting and the one or more items of real-time information pertaining to the thermal management of the building, the one or more set-point temperatures being within a range of comfort temperatures for occupants of the building, the determining of the one or more set-point temperatures being constrained to maintain the expected zone temperature in the planning window and a minimum cooling rate during the planning window;

determining a thermal management schedule for the one or more hardware devices associated with the thermal management of the building with the one or more set-point temperatures during the planning window;

configuring the one or more hardware devices associated with the thermal management of the building with the determined thermal management scheduled; and

performing thermal management of the building based on the thermal management schedule in accordance with the one or more set-point temperatures to reduce the energy usage associated with the building while maintaining thermal comfort of the building.

15. The system of claim 14, wherein the one or more hardware devices associated with the thermal management of the building comprises an actuator.

16. A method, comprising:

capturing, from a user, a user-selected setting that represents a desired balance between energy usage and thermal comfort associated with a building;

capturing, via a communication link with one or more hardware devices associated with thermal management of the building, real-time information pertaining to the thermal management of the building comprising at least real-time occupancy data associated with the building including real-time occupancy information and ambient temperature;

receiving, from the user, a planning window indicating a duration of time in the future;

determining a cooling rate to limit peak cooling output of the hardware devices associated with thermal management of the building, the cooling rate based on a product of a first difference and a second difference, the first difference being based on a difference between the expected zone temperature and one or more set-point temperatures and the second difference being based on a difference between the expected zone temperature and an air supply temperature;

determining the one or more set-point temperatures for the building during the planning window, the determining of the one or more set-point temperatures being based on the user-selected setting and the one or more items of real-time information pertaining to the thermal management of the building, the one or more set-point temperatures being within a range of comfort temperatures for occupants of the building, the determining of the one or more set-point temperatures being constrained to maintain the expected zone temperature in the planning window and a minimum cooling rate during the planning window;

determining a thermal management schedule for the one or more hardware devices associated with the thermal management of the building with the one or more set-point temperatures during the planning window;

configuring the one or more hardware devices associated with the thermal management of the building with the determined thermal management schedule;

performing thermal management of the building based on the thermal management schedule in accordance with the one or more set-point temperatures;

detecting a change to the real-time occupancy information associated with the building;

updating the one or more set-point temperatures for the building based on the detected change to the real-time occupancy information; and

outputting the updated one or more set-point temperatures to the one or more hardware devices associated with the thermal management of the building for execution of the thermal management schedule to be carried out in accordance with the updated one or more set-point temperatures.