Methods and apparatuses for displaying energy savings from an HVAC system
First Claim
1. A method of determining energy savings from an HVAC system in a building operating in an energy saving mode, the method comprising:
- running the HVAC system to maintain a comfort mode temperature during a learning period;
determining the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period;
after the conclusion of the learning period, determining a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined as a function of outdoor ambient conditions and power consumed by the HVAC system to maintain the comfort mode setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the power consumed by the HVAC system while maintaining the energy saving setpoint temperature;
running the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period;
determining the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and
calculating the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition.
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Accused Products
Abstract
A method and system of determining and displaying energy savings from an HVAC system operating in an energy saving mode. The HVAC system is operated to maintain a comfort mode temperature during a learning period. The energy consumed by the HVAC system at multiple outside ambient conditions during the learning period is determined. The correlation between a specific ambient condition and energy consumed by the HVAC system is determined. The HVAC system is run to maintain an energy saving setpoint temperature. The energy consumed by the HVAC system is determined at an ambient condition while maintaining the energy saving setpoint temperature. The energy savings are calculated as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition.
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Citations
21 Claims
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1. A method of determining energy savings from an HVAC system in a building operating in an energy saving mode, the method comprising:
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running the HVAC system to maintain a comfort mode temperature during a learning period; determining the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determining a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined as a function of outdoor ambient conditions and power consumed by the HVAC system to maintain the comfort mode setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the power consumed by the HVAC system while maintaining the energy saving setpoint temperature;running the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determining the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculating the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining energy savings from an HVAC system in a building operating in an energy saving mode, the method comprising:
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running the HVAC system to maintain a comfort mode temperature during a learning period; determining the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determining a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined as a function of outdoor ambient conditions and the on and off times of the HVAC system while maintaining the comfort mode setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the on and off times of the HVAC system while maintaining the energy saving setpoint temperature;running the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determining the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculating the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition.
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11. A method of determining energy savings from an HVAC system in a building operating in an energy saving mode, the method comprising:
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running the HVAC system to maintain a comfort mode temperature during a learning period; determining the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determining a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined by the difference in on and off times of the HVAC system while maintaining the comfort mode setpoint temperature and maintaining a second setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the energy saving setpoint temperature;running the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determining the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculating the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition.
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12. An energy savings monitoring system, comprising:
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an HVAC system; a thermostat coupled to the HVAC system to control the HVAC system, the thermostat including a display and a controller operative to; run the HVAC system to maintain a comfort mode temperature during a learning period; determine the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determine a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined as a function of outdoor ambient conditions and power consumed by the HVAC system to maintain the comfort mode setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the power consumed by the HVAC system while maintaining the energy saving setpoint temperature;run the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determine the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculate the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition, wherein the display is operative to display the calculated energy savings. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An energy savings monitoring system, comprising:
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an HVAC system; a thermostat coupled to the HVAC system to control the HVAC system, the thermostat including a display and a controller operative to; run the HVAC system to maintain a comfort mode temperature during a learning period; determine the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determine a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined as a function of outdoor ambient conditions and the on and off times of the HVAC system while maintaining the comfort mode setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the on and off times of the HVAC system while maintaining the energy saving setpoint temperature;run the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determine the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculate the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition, wherein the display is operative to display the calculated energy savings.
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21. An energy savings monitoring system, comprising:
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an HVAC system; a thermostat coupled to the HVAC system to control the HVAC system, the thermostat including a display and a controller operative to; run the HVAC system to maintain a comfort mode temperature during a learning period; determine the energy consumed by the HVAC system at multiple outside ambient conditions during the learning period; after the conclusion of the learning period, determine a correlation between a specific ambient condition and energy consumed by the HVAC system at the specific ambient condition, the correlation determined based on the multiple outside ambient conditions and corresponding energy consumed by the HVAC system during those multiple outside ambient conditions, wherein the correlation is determined by the difference in on and off times of the HVAC system while maintaining the comfort mode setpoint temperature and maintaining a second setpoint temperature; and
wherein the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature is determined by the energy saving setpoint temperature;run the HVAC system to maintain an energy saving setpoint temperature after the conclusion of the learning period; determine the energy consumed by the HVAC system at an ambient condition while maintaining the energy saving setpoint temperature; and calculate the energy savings as a function of the difference between the energy that would have been consumed by the HVAC system at the ambient condition based on the determined correlation and the energy consumed by the HVAC system while maintaining the energy saving setpoint temperature at the ambient condition, wherein the display is operative to display the calculated energy savings.
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Specification