Load reduction based on percentage change in energy price

• US 9,230,291 B2
• Filed: 04/28/2014
• Issued: 01/05/2016
• Est. Priority Date: 04/23/2010
• Status: Active Grant

• Current Assignee: Copeland Comfort Control LP (Emerson Electric Company)
• Original Assignee: Emerson Electric Company
• Inventors: Drew, David S., Evans, Edward B.
• Primary Examiner(s): JARRETT, RYAN A
• Application Number:
  US14/263,486
• Publication Number:
  US 20140236362A1
• Time in Patent Office: 617 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence
• CPC Class Codes: G05D 23/1923 using thermal energy, the cost of which varies in function of time
• CPC Class Codes: G06Q 50/06 Energy or water supply

Abstract

A thermostatic controller generally includes a transceiver configured to receive a signal that includes an energy price rate for a given time period, and an electronic memory device in which one or more energy price rates received by the transceiver are stored. A microprocessor is configured to select the lowest energy price rate received within a given time period for establishing a base energy price rate; determine if the energy price rate for a present time period exceeds the base energy price rate by more than a first percentage or multiplier factor of the base energy price rate; and respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to an energy consuming appliance indicating that the energy consuming appliance should be in an off state and/or to one or more ceiling fans to activate, deactivate and/or change speed of the one or more ceiling fans.

Claims

1. A thermostatic controller comprising:

a transceiver configured to receive a signal that includes an energy price rate for a given time period;

an electronic memory device in which one or more energy price rates received by the transceiver are stored; and

a microprocessor in communication with the transceiver and electronic memory, the microprocessor configured to;

select from the one or more energy price rates the lowest energy price rate received within a given time period for establishing a base energy price rate;

determine if the energy price rate for a present time period exceeds the base energy price rate by more than a first percentage or multiplier factor of the base energy price rate; and

respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to an energy consuming appliance indicating that the energy consuming appliance should be in an off state and/or to one or more ceiling fans to activate, deactivate and/or change speed of the one or more ceiling fans;

wherein the microprocessor is configured to respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to an energy consuming appliance indicating that the energy consuming appliance should be in an off state; and

wherein the microprocessor is configured to respond to an energy price rate that is below the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to the energy consuming appliance indicating that the energy consuming appliance should be in an on state.

2. The thermostatic controller of claim 1, wherein the thermostatic controller comprises:

a thermostat for controlling operation of one or more energy consuming appliances of a heating ventilation and air-conditioning (HVAC) system; and

/or

a control for a water heater; and

/or

a control for a pool water heater; and

/or

a control for a spa water heater; and

/or

a control for a ceiling fan.

3. The thermostatic controller of claim 1, wherein the microprocessor is configured to respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to one or more ceiling fans to activate, deactivate and/or change speed of the one or more ceiling fans.

4. The thermostatic controller of claim 3, wherein the thermostatic controller is operable to activate, deactivate, and/or change speed of the one or more ceiling fans as a function of a base energy price rate increase.

5. The thermostatic controller of claim 1, wherein the microprocessor is operable to select the lowest energy price rate received within a 24 hour period, which lowest energy price rate is utilized to establish the base energy price rate.

6. The thermostatic controller of claim 1, wherein the first percentage or multiplier factor is a user-selectable percentage that is selectable as a value of at least 20 percent or a user-selectable multiplier factor that is selectable as a value of at least 1.5.

7. The thermostatic controller of claim 1, further comprising a display device that is configured to:

display user-selectable fields for input of a user-selectable percentage or user-selectable multiplier factor, to enable a user to select a threshold as a percentage or multiplier factor of the base energy price rate; and

/or

display the first percentage or multiplier factor, to provide for display of an easily discernible cost impact associated with an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor.

8. The thermostatic controller of claim 1, wherein the thermostatic controller is operable for curtailing load of one or more energy consuming appliances when energy price rate is high, and wherein the thermostatic controller includes a connection with a contactor by which the thermostatic controller can switch on and off to connect or disconnect a supply of power to an energy consuming appliance to thereby control operation of the energy consuming appliance.

9. A heating ventilation and air-conditioning (HVAC) system comprising one or more energy consuming appliances and the thermostatic controller of claim 1, wherein the thermostatic controller comprises a thermostat for controlling operation of the one or more energy consuming appliances of the HVAC system.

10. A thermostatic controller comprising:

a transceiver configured to receive a signal that includes an energy price rate for a given time period;

an electronic memory device in which one or more energy price rates received by the transceiver are stored; and

a microprocessor in communication with the transceiver and electronic memory, the microprocessor configured to;

select from the one or more energy price rates the lowest energy price rate received within a given time period for establishing a base energy price rate;

determine if the energy price rate for a present time period exceeds the base energy price rate by more than a first percentage or multiplier factor of the base energy price rate; and

respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to an energy consuming appliance indicating that the energy consuming appliance should be in an off state and/or to one or more ceiling fans to activate, deactivate and/or change speed of the one or more ceiling fans;

wherein the thermostatic controller is configured to respond;

to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a low speed;

to an energy price rate that exceeds the base energy price rate by more than a second percentage or multiplier factor which is higher than the first percentage or multiplier factor by transmitting a signal via the transceiver to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a medium speed which is higher than the low speed; and

to an energy price rate that exceeds the base energy price rate by more than a third percentage or multiplier factor which is higher than the second percentage or multiplier factor by transmitting a signal via the transceiver to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a high speed which is higher than the medium speed.

11. The thermostatic controller of claim 10, wherein the microprocessor is configured to respond to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to an energy consuming appliance indicating that the energy consuming appliance should be in an off state.

12. The thermostatic controller of claim 11, wherein the microprocessor is configured to respond to an energy price rate that is below the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal via the transceiver to the energy consuming appliance indicating that the energy consuming appliance should be in an on state.

13. A method of using a thermostatic controller, the method comprising:

receiving a signal that includes an energy price rate for a given time period;

storing one or more energy price rates in an electronic memory;

selecting a lowest energy price rate received within a given period of time from the one or more energy price rates stored in the electronic memory by using a microprocessor in communication with the electronic memory, for establishing a base energy price rate;

determining, using the microprocessor, if the energy price rate for a present time period exceeds the base energy price rate by more than a first percentage or multiplier factor of the base energy price rate; and

responding to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal from the thermostatic controller to an energy consuming appliance indicating that the energy consuming appliance should be in an off state and/or to one or more ceiling fans to activate, deactivate, and/or change speed of the one or more ceiling fans;

wherein the method includes responding to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal from the thermostatic controller to one or more ceiling fans to activate, deactivate, and/or change speed of the one or more ceiling fans to thereby help reduce energy consumption; and

wherein the method includes;

responding to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal from the thermostatic controller to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a low speed;

responding to an energy price rate that exceeds the base energy price rate by more than a second percentage or multiplier factor which is higher than the first percentage or multiplier factor by transmitting a signal from the thermostatic controller to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a medium speed which is higher than the low speed; and

responding to an energy price rate that exceeds the base energy price rate by more than a third percentage or multiplier factor which is higher than the second percentage or multiplier factor by transmitting a signal from the thermostatic controller to the one or more ceiling fans indicating that the one or more ceiling fans should be operating at a high speed which is higher than the medium speed.

14. The method of claim 13, wherein the method includes responding to an energy price rate that exceeds the base energy price rate by more than the first percentage or multiplier factor by transmitting a signal from the thermostatic controller to an energy consuming appliance indicating that the energy consuming appliance should be in an off state.