Method for predicting HVAC energy consumption
First Claim
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1. A method for predicting energy consumption of an HVAC system, the HVAC system configured for cooling air within a building, heating air within a building, or both, the method comprising:
- providing a model for an indoor temperature, y, of the building;
providing a model for an operating state, u, of the HVAC system;
providing predicted future outdoor temperatures;
calculating predicted future indoor temperatures of the building and predicted future operating states of the HVAC system utilizing at least the model for y, the model for u, and the predicted future outdoor temperatures;
estimating a predicted future energy consumption of the HVAC system based at least in part on the predicted future operating states of the HVAC system; and
changing a control temperature of the HVAC system based at least in part upon the predicted future energy consumption of the HVAC system,wherein the model for y comprises
yk=a1yk-1+a2yk-2+b1vk-1+b2uk-1 whereyk is an indoor temperature of the building at time k,yk-1 is an indoor temperature of the building at time k−
1,yk-2 is an indoor temperature of the building at time k−
2,vk-1 is an outdoor temperature at time k−
1,uk-1 is an operating state of the HVAC system at time k−
1, anda1, a2, b1, and b2 are constants.
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Abstract
A method for predicting energy consumption of an HVAC system is provided. The method includes providing a model for an indoor temperature of a building, a model for an operating state of the HVAC system, and predicted future outdoor temperatures. Utilizing at least the models for the indoor temperature and the operating state of the HVAC system and the predicted future outdoor temperatures, a predicted future energy consumption of the HVAC can be estimated.
5 Citations
17 Claims
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1. A method for predicting energy consumption of an HVAC system, the HVAC system configured for cooling air within a building, heating air within a building, or both, the method comprising:
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providing a model for an indoor temperature, y, of the building; providing a model for an operating state, u, of the HVAC system; providing predicted future outdoor temperatures; calculating predicted future indoor temperatures of the building and predicted future operating states of the HVAC system utilizing at least the model for y, the model for u, and the predicted future outdoor temperatures; estimating a predicted future energy consumption of the HVAC system based at least in part on the predicted future operating states of the HVAC system; and changing a control temperature of the HVAC system based at least in part upon the predicted future energy consumption of the HVAC system, wherein the model for y comprises
yk=a1yk-1+a2yk-2+b1vk-1+b2uk-1where yk is an indoor temperature of the building at time k, yk-1 is an indoor temperature of the building at time k−
1,yk-2 is an indoor temperature of the building at time k−
2,vk-1 is an outdoor temperature at time k−
1,uk-1 is an operating state of the HVAC system at time k−
1, anda1, a2, b1, and b2 are constants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for predicting energy consumption of an HVAC system, the HVAC system configured for cooling air within a building, heating air within a building, or both, the method comprising:
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providing a model for an indoor temperature, yk, of the building at time k based at least in part on an interior temperature, yk-1, of the building at time k−
1, an exterior temperature, vk-1, of the building at time k−
1, and an operating state, uk-1, of the HVAC system at time k−
1;providing a model for an operating state, uk, of the HVAC system at time k based at least in part on yk-1 and uk-1; providing predicted future exterior temperatures of the building; estimating a predicted future energy consumption of the HVAC system utilizing at least the model for yk, the model for uk, and the predicted future exterior temperatures; and changing a control temperature of the HVAC system based at least in part upon the predicted future energy consumption of the HVAC system, wherein the model for uk comprises - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification