Load Control System Having an Energy Savings Mode
First Claim
1. A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system comprising:
- a lighting control device for controlling the amount of power delivered to the lighting load;
a daylight control device for controlling the amount of natural light to be admitted through the window; and
a controller operable to adjust a setpoint temperature of the heating and cooling system to thus control a present temperature in the building, the controller operable to receive a demand response command and to control the operation of the lighting control device, the daylight control device, and the heating and cooling system in response to receiving the demand response command;
wherein the controller is operable to automatically decrease the amount of power delivered by the lighting control device to the lighting load so as to decrease the power consumption of the lighting load, decrease the amount of natural light admitted through the window by the daylight control device so as to decrease the power consumption of the heating and cooling system, and adjust the setpoint temperature of the heating and cooling system so as to decrease the power consumption of the heating and cooling system in response to receiving the demand response command.
2 Assignments
0 Petitions
Accused Products
Abstract
A load control system for a building having a lighting load, a window, and a heating and cooling system comprises a lighting control device for controlling the amount of power delivered to the lighting load, a daylight control device (such as a motorized window treatment) for adjusting the amount of natural light to be admitted through a window, and a controller for adjusting a setpoint temperature of the heating and cooling system to thus control a present temperature in the building. In response to receiving a demand response command, the controller controls the lighting control device, the daylight control device, and the heating and cooling system so as to decrease a total power consumption of the load control system. The load control system may comprise a controllable switching device for disconnecting power to or disconnecting the control lines to one or more components of the heating and cooling system.
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Citations
20 Claims
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1. A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system comprising:
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a lighting control device for controlling the amount of power delivered to the lighting load; a daylight control device for controlling the amount of natural light to be admitted through the window; and a controller operable to adjust a setpoint temperature of the heating and cooling system to thus control a present temperature in the building, the controller operable to receive a demand response command and to control the operation of the lighting control device, the daylight control device, and the heating and cooling system in response to receiving the demand response command; wherein the controller is operable to automatically decrease the amount of power delivered by the lighting control device to the lighting load so as to decrease the power consumption of the lighting load, decrease the amount of natural light admitted through the window by the daylight control device so as to decrease the power consumption of the heating and cooling system, and adjust the setpoint temperature of the heating and cooling system so as to decrease the power consumption of the heating and cooling system in response to receiving the demand response command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system comprising:
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a lighting control device for controlling the amount of power delivered to the lighting load; a motorized window treatment comprising a window treatment fabric for covering the window, the motorized window treatment operable to move the fabric between a fully-open position in which the window is not covered and a fully-closed position in which the window is covered; a wireless temperature sensor operable to measure a present temperature in the building and to wirelessly transmit a digital message including a value representative of the present temperature in the building; and a controller operable to receive the digital message from the wireless temperature sensor and to determine the present temperature in the building in response to the digital message, the controller operable to adjust a setpoint temperature of the heating and cooling system to thus control the present temperature in the building towards the setpoint temperature, the controller operable to receive a demand response command and to control the operation of the lighting control device, the motorized window treatment, and the heating and cooling system in response to receiving the demand response command; wherein the controller is operable to automatically decrease the amount of power delivered by the lighting control device to the lighting load so as to decrease the power consumption of the lighting load, move the fabric to the fully-closed position so as to decrease the power consumption of the heating and cooling system, and adjust the setpoint temperature of the heating and cooling system so as to decrease the power consumption of the heating and cooling system in response to receiving the demand response command.
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Specification