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Automated adjustment of an HVAC schedule for resource conservation

  • US 9,298,197 B2
  • Filed: 04/19/2013
  • Issued: 03/29/2016
  • Est. Priority Date: 04/19/2013
  • Status: Active Grant
First Claim
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1. A method of optimizing energy consumption of a heating, ventilation, and air conditioning (HVAC) system, comprising:

  • identifying a schedule of temperature setpoints, the schedule of temperature setpoints defining a number of temperature setpoints over a time period;

    beginning with the schedule, for each of a succession of periodic time intervals that are each relatively short in comparison to an overall optimization time period, generating an incrementally adjusted version of the schedule as part of an automated schedule adjustment process executed by a thermostat, the incremental change being directed to a setpoint temperature of the number of temperature setpoints and causing less energy usage during one of the periodic time intervals as compared to a previous one of the periodic time intervals, wherein causing less energy usage comprises having a heating system of the HVAC system or an air conditioner of the HVAC system activated less than if the identified schedule was used for controlling the HVAC system; and

    for each of the succession of periodic time intervals, controlling the HVAC system according to the incrementally adjusted version of the schedule generated for the periodic time interval.

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