Load shedding thermostat
AssigneeCarrier Corporation
InventorsPeter Gerard Pierret, Kevin Farrell Dudley
Life of this patent
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Abstract
A method of load shedding wherein a series of load shedding thermostats are mounted in building serviced by a utility. Each thermostat contains an addressable processor arranged to receive different code inputs form the utility. Heat loss and load characteristics for buildings are calculated from measured indoor and outdoor temperature movements along with the equipment's duty cycle for a given period of time and the required setback temperature for a given coded input is set into the thermostat based upon heat loss and load characteristics of the building.
Claims9
A method of load shedding that includes the steps of
- mounting a load shedding thermostat within a building, said thermostat being arranged to control heating and cooling equipment within the building and having an addressable processor for communicating with a power provider;
- determining the normal operating load of the equipment prior to the initiation of a load shedding period by the relationship:
- QL=m(To−Ti)+b
- where
- QL is the normal operating load on the building,
- To is the measured outdoor temperature
- Ti is the measured indoor temperature
- m and b are parameters relating to the building heat loss and load characteristics;
- providing a code input signal to the processor to initiate a load shedding period during which the normal operating load is reduced by a given percentage;
- determining the thermostat load shedding temperature setting required during the load shedding period needed to reduce the normal operating load by said given percentage;
- and
- placing the load shedding temperature into the thermostat.
A method of load shedding that includes the steps of
- mounting a load shedding thermostat within a building, said thermostat being arranged to control heating and cooling equipment within the building and having an addressable processor for communicating with a power provider;
- determining the normal operating load of the equipment prior to the initiation of a load shedding period;
- providing a code input signal to the processor to initiate a load shedding period during which the normal operating load is reduced by a given percentage;
- determining the thermostat load shedding temperature setting required during the load shedding period needed to reduce the normal operating load by said given percentage;
- placing the load shedding temperature into the thermostat;
- returning the thermostat setting back to the normal temperature setting upon termination of the load shedding period;
- and
- providing load shedding thermostats to a number of buildings serviced by the power provider and randomly returning said thermostats to their normal setting at different times.
Dependencies are inferred from the claim text.