Energy consumption estimation using real time pricing information
First Claim
1. A method of determining an energy savings during a curtailment period where a target temperature for a selected zone is changed from a preselected target temperature, comprising the steps of:
- (A) determining an actual temperature in the zone during the curtailment period with the changed target temperature;
(B) determining an estimated temperature in the zone during the curtailment period if the preselected target temperature were used;
(C) determining a difference between the actual temperature and the estimated temperature over the curtailment period; and
(D) determining an amount of energy saved, using the determined difference.
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Abstract
A system for estimating energy cost savings during curtailment periods, for example, determines an estimated temperature in the zone during the period of interest as if the thermostat were set at a temperature different than the actual set point temperature. By determining a difference in the estimated temperature in the zone and the actual temperature over time, the amount of energy savings can be estimated. Applying real time energy cost data to the estimated energy savings provides a real time estimation of actual cost savings during a selected period. The inventive estimation technique includes determining an equilibrium condition for the zone as part of the estimation process.
215 Citations
19 Claims
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1. A method of determining an energy savings during a curtailment period where a target temperature for a selected zone is changed from a preselected target temperature, comprising the steps of:
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(A) determining an actual temperature in the zone during the curtailment period with the changed target temperature;
(B) determining an estimated temperature in the zone during the curtailment period if the preselected target temperature were used;
(C) determining a difference between the actual temperature and the estimated temperature over the curtailment period; and
(D) determining an amount of energy saved, using the determined difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for estimating energy savings in a selected zone, comprising:
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a thermostat device having a first input for selecting a first target temperature for the zone and a second input for changing the target temperature from the first target temperature to a second target temperature and a temperature sensor that provides information regarding an actual temperature in the zone; and
an estimator module that gathers information regarding the actual temperature in the zone over a selected period of time when the system is set at the second target temperature and estimates a temperature in the zone over said selected period as if the system were set at the first target temperature and provides an energy difference based upon a comparison between the actual temperature and the estimated temperature over said selected period. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification