THERMOSTAT METHOD AND SYSTEM FOR CONTROLLING SOLAR ENERGY UTILIZATION FOR EFFICIENT ENERGY USAGE AND CONSERVATION OF ENERGY RESOURCES

• US 20110257795A1
• Filed: 06/24/2011
• Published: 10/20/2011
• Est. Priority Date: 06/24/2011
• Status: Abandoned Application

• Current Assignee: Pvt Solar Inc.
• Original Assignee: Pvt Solar Inc.
• Inventors: PLAISTED, Joshua R., NARAYANAMURTHY, Ramachandran
• Application Number:
  US13/168,901
• Publication Number:
  US 20110257795A1
• Time in Patent Office: Days
• US Class Current: 700/277
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 2005/0064 using solar energy
• CPC Class Codes: F24F 5/0046 using natural energy, e.g. solar energy, energy from the ground
• CPC Class Codes: F24S 2201/00 Prediction; Simulation
• CPC Class Codes: Y02A 30/272 Solar heating or cooling
• CPC Class Codes: Y02B 10/20 Solar thermal

Abstract

A system for controlling solar energy utilization for efficient energy usage and conservation of energy resources for providing space conditioning and home ventilation. The system includes a control module configured to operate a solar energy system for collecting a flow of fresh air for utilizing thermal energy converted by the solar energy system. Additionally, the system includes a thermostat module directly coupled with an HVAC system to for controlling a delivery of a conditioned airflow. The thermostat device couples wirelessly to the control module. Further, the system includes a graphic user interface operably communicating with the control module remotely via a network hub. The graphic user interface device is configured to set modes of operation for the thermostat module and configured to communicate with the thermostat module for transmitting control information, modes of operation, and temperature information of the building structure to the control module via a wireless transmission.

Claims

1. A system for controlling solar energy utilization for efficient energy usage and conservation of energy resources, the system comprising:

a control module configured to control operation of a solar energy system associated with a building structure for providing a flow of fresh air and thermal energy converted from a solar energy source by the solar energy system;

a thermostat module disposed in the building structure to transfer signals to an HVAC system coupled with the solar energy system, the solar energy system being configured to transfer the flow of fresh air for space use of a first selected portion of the building structure and configured for ventilation of a second selected portion of the building structure, the thermostat module comprising a wireless device for transmitting temperature information to the control module via a wireless signal, the control module being substantially free from direct communication with the HVAC system; and

a graphic user interface device operably communicating with the control module remotely via a network hub, the network hub being coupled to an external network of computers, the graphic user interface device being configured to set modes of operation for the thermostat module and configured to communicate with the thermostat module for transmitting control information, modes of operation, and temperature information of the building structure to the control module via a wireless transmission.

2. The system of claim 1 wherein the solar energy system comprises a combination of one or more solar thermal modules and one or more photovoltaic modules, the solar energy system being configured to convert a solar energy source into thermal energy and to use an air plenum structure for collecting the flow of fresh air;

wherein the building structure is a home;

wherein the HVAC system and the solar energy system are configured to be operated in coordination with each other and free from one or more conflicts in operation;

wherein the graphic user interface device comprising a plurality of programming modes.

3. The system of claim 2 wherein the solar energy system further comprises an energy transfer module coupled to the air plenum structure for receiving the flow of fresh air and providing the thermal energy carried by the flow of fresh air;

wherein the conversion of the solar energy source into the thermal energy is a partial conversion of the solar energy source to the thermal energy;

wherein the one or more conflicts in operation is at least one mode selected from (a) an HVAC cooling mode and a solar energy system heating mode or (b) a solar energy system cooling mode and an HVAC heating mode.

4. The system of claim 3 wherein the HVAC system comprises an air handling module coupled between the energy transfer module and the home to provide a conditioned airflow merging with the flow of fresh air for ventilation and to provide space conditioning partially utilizing the thermal energy carried by the flow of fresh air.

5. The system of claim 1 wherein the thermostat module comprises at least a touch-screen display, a temperature sensor, a wired port for directly connecting one or more control elements of the HVAC system, and a wireless port for receiving a Zigbee U-snap device.

6. The system of claim 5 wherein the control module comprises at least a USB port for inserting a Zigbee USB stick configured to mate with the Zigbee U-snap device on the thermostat module for forming a closed local wireless network.

7. The system of claim 6 wherein the thermostat module comprises an auto mode for executing pre-loaded control settings, a manual mode for inputting control settings locally via the touch-screen display, and a communication mode using the closed local wireless network for exchanging digital data with the control module.

8. The system of claim 1 wherein the graphic user interface device comprises a virtual thermostat interface capable of being operated on one or more computing devices including server computer, network computer, laptop computer, tablet computer, smartphone, flat panel display respectively connecting to the external network of computers.

9. The system of claim 8 wherein the virtual thermostat interface comprises three modes of automatic operation with pre-programmed control settings respectively for three types of occupancy states including home, sleep, and away, and a mode of manual operation for user to manually input a temperature setpoint or adjust control settings corresponding to each of the three types of occupancy states including home, sleep, and away.

10. The system of claim 8 wherein the virtual thermostat interface further comprises a graphical Round-Dial screen including an upper hemi-circle for setting a temperature setpoint associated with either the HVAC cooling mode or the HVAC heating mode initiated by the thermostat module and a lower hemi-circle for displaying a current indoor temperature and a comfort band within which the HVAC system is not initiated respectively for the three types of occupancy states including home, sleep, and away.

11. The system of claim 10 wherein the comfort band defines an adjustable range of the indoor temperature between a lower end and a higher end for either a cooling mode or a heating mode determined by the thermostat module, the lower end in the heating mode being set to be the temperature setpoint associated with the HVAC heating mode while the higher end being adjustable within the solar energy system heating mode, the higher end in the cooling mode being set to be the temperature setpoint associated with the HVAC cooling mode while the lower end being adjustable within the solar energy system cooling mode.

12. The system of claim 10 wherein the virtual thermostat interface further comprises a switch button to choose between an auto mode and a manual mode, a set of buttons to adjust the comfort band corresponding to a save-energy mode, and a tool button to open up an advanced control setting window.

13. The system of claim 12 wherein the advanced control setting window comprises a first screen display including a setting button to adjust the temperature setpoint for each of three types of occupancy states including home, sleep, and away and a second screen display including a 24/7 schedule calendar to adjust occupancy states including home, sleep, and away for each hour up to four scheduled periods per day;

wherein the second screen display further includes a first button for determining when a temporary occupancy state setting overriding default settings ends, and a second button for restoring to the default settings.

14. The system of claim 8 wherein the virtual thermostat interface further comprises several tags to respectively enact control settings for different thermostat modules associated with the home.

15. A method for coordinating a solar energy system with a HVAC system for providing healthy home space conditioning and ventilation, the method comprising:

providing a control module for a solar energy system associated with a home;

disposing a thermostat device in the home for controlling a HVAC system, the thermostat device comprising a wireless device;

forming a local wireless network between the control module and the thermostat device via the wireless device;

initiating a graphic user interface for inputting control information, the graphic user interface being linked to a network hub comprising a data server configured to transfer the control information to the control module via Ethernet or Internet, the control information being partially executed by the solar energy system for providing space conditioning and ventilation;

transferring selected control information using the local wireless network from the control module to define modes of operation for the thermostat device, the modes of operation being executed by the HVAC system for providing auxiliary space conditioning;

receiving at the control module a space condition information from the thermostat device using the local wireless network; and

configuring the HVAC system and the solar energy system using the selected control information and the space condition information in a coordinated process within a defined time period, the coordinated process comprising communicating the selected control information between the control module and the graphical user interface, whereupon the communicating comprises updating the selected control information if the selected control information has been changed based on the space condition information received at the control module or the control information inputted at the graphical user interface to maintain the same updated control information at the graphical user interface, the control module, and the data server;

wherein the defined time period is about fifteen minutes and less.

16. The method of claim 15 wherein the providing a control module comprises configuring the control module to control operation of the solar energy system for collecting a flow of fresh air carrying thermal energy produced by the solar energy system and delivering the flow of the fresh air to the home for providing space conditioning and home ventilation.

17. The method of claim 15 wherein the disposing a thermostat device comprises configuring the thermostat device to control the HVAC system integrated with the solar energy system for generating a conditioned airflow for providing auxiliary space conditioning.

18. The method of claim 17 wherein the coordinated process further comprises providing the flow of the fresh air using the solar energy system if the space condition information indicates that an indoor temperature is within a comfort band before providing the conditioned airflow using the HVAC system if the space condition information indicates that the indoor temperature is out of the comfort band.

19. The method of claim 18 wherein the comfort band comprises a temperature range defined for either a heating mode or a cooling mode between a lower bound value and an upper bound value adjustable via the graphic user interface for minimizing energy usage without substantially causing discomfort to occupants in the home.

20. The method of claim 19 wherein in the heating mode the upper bound value is a first setpoint that only initiates the solar energy system to provide the flow of the fresh air and is higher than the lower bound value as a default heating setpoint for providing the conditioned airflow using the HVAC system;

in the cooling mode the lower bound value is a second setpoint that only initiates solar energy system to provide the flow of the fresh air and is lower than the upper bound value as a default cooling setpoint for providing the conditioned airflow using the HVAC system.