MAXIMIZING VALUE FROM A CONCENTRATING SOLAR ENERGY SYSTEM

• US 20140053557A1
• Filed: 08/21/2012
• Published: 02/27/2014
• Est. Priority Date: 08/21/2012
• Status: Abandoned Application

• Current Assignee: Sunpower Corporation (Totalenergies Se)
• Original Assignee: Cogenra Solar, Inc.
• Inventors: Almogy, Gilad, Morad, Ratson, Thothadri, Mani
• Application Number:
  US13/590,525
• Publication Number:
  US 20140053557A1
• Time in Patent Office: Days
• US Class Current: 60/651
• CPC Class Codes: F03G 6/065 having a Rankine cycle
• CPC Class Codes: Y02B 10/20 Solar thermal
• CPC Class Codes: Y02E 10/46 Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

Systems, methods, and apparatus by which solar energy may be collected to provide electricity, heat, and/or cold are disclosed herein.

Claims

1. A solar energy system comprising:

a concentrating solar energy collector coupled to provide a heat output and an electricity output to one or more external applications;

heat storage coupled to receive heat from the concentrating solar energy collector and to provide heat to the one or more external applications;

at least one thermally driven device coupled to provide an electricity output or a cold output to the one or more external applications, the thermally driven device coupled to receive heat from the concentrating solar energy collector and from the heat storage; and

a controller configured to control operation of the concentrating solar energy collector, the heat storage, and the thermally driven device to maximize the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, and the electricity or cold output from the thermally driven device.

2. The solar energy system of claim 1, wherein the thermally driven device is an Organic Rankine Cycle electricity generator.

3. The solar energy system of claim 2, wherein the controller is configured to operate the heat storage to provide heat from the heat storage to power the Organic Rankine Cycle electricity generator.

4. The solar energy system of claim 1, wherein the thermally driven device is a chiller that provides a cold output.

5. The solar energy system of claim 4, wherein the controller is configured to operate the heat storage to provide heat from the heat storage to power the chiller.

6. The solar energy system of claim 4, comprising cold storage coupled to receive a cold output from the chiller and coupled to provide a cold output to the one or more external applications.

7. The solar energy system of claim 1, comprising electricity storage coupled to receive electricity from the concentrating solar energy collector.

8. The solar energy system of claim 1, comprising an engine-generator coupled to provide a heat output to the heat storage or to the one or more external applications and coupled to provide an electricity output to the one or more external applications, wherein the controller is configured to control operation of the concentrating solar energy collector, the heat storage, the thermally driven device, and the engine-generator to maximize the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, the heat output from the engine-generator, the electricity output from the engine-generator, and the electricity or cold output from the thermally driven device.

9. The solar energy system of claim 1, comprising a heat pump coupled to provide a heat output to the heat storage or to the one or more external applications, wherein the controller is configured to control operation of the concentrating solar energy collector, the heat storage, the thermally driven device, and the heat pump to maximize the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, the heat output from the heat pump, and the electricity or cold output from the thermally driven device.

10. The solar energy system of claim 2, comprising a thermally driven chiller coupled to provide a cold output to the one or more external applications, wherein the controller is configured to control operation of the concentrating solar energy collector, the heat storage, the Organic Rankine Cycle generator, and the thermally driven chiller to maximize the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, the electricity output from the Organic Rankine Cycle generator, and the cold output from the chiller.

11. The solar energy system of claim 10, comprising cold storage coupled to receive a cold output from the chiller and coupled to provide a cold output to the one or more external applications.

12. The solar energy system of claim 1, wherein the controller is configured to operate the concentrating solar energy collector to maximize its electricity output.

13. The solar energy system of claim 1, wherein the controller is configured to operate the concentrating solar energy collector at high temperature to maximize heat collection, operate the thermally driven device at maximum capacity with heat from the concentrating solar energy collector, and store any excess heat from the concentrating solar energy collector in the heat storage.

14. The solar energy system of claim 1, wherein the controller is configured to operate the concentrating solar energy collector at high temperature to maximize heat collection and store the heat in heat storage.

15. The solar energy system of claim 1, wherein the controller is configured to predict the performance of the concentrating solar energy collector, the heat storage, and the thermally driven device based on one or more weather forecasts, historical performance data, or weather forecasts and historical performance data.

16. The solar energy system of claim 1, wherein the controller is configured to predict demand from the one or more external applications for electricity, heat, or cold.

17. The solar energy system of claim 1, wherein the controller is configured to estimate the value of electricity, heat, and cold outputs from the solar energy system from energy pricing data.

18. The method of claim 1, wherein the controller is configured to control operation of the concentrating solar energy collector based in part on whether or not one of the external applications has received a demand from an electric power provider to reduce consumption of electric power from that provider.

19. The method of claim 18, wherein the controller is configured to assess the availability of heat from the heat storage prior to determining the operation of the concentrating solar energy collector, the heat storage, and the thermally driven device that maximizes the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, and the electricity or cold output from the thermally driven device.

20. The method of claim 19, wherein the controller is configured to assess the cooling needs of the one or more external applications prior to determining the operation of the concentrating solar energy collector, the heat storage, and the thermally driven device that maximizes the total monetary value of the heat output from the concentrating solar energy collector, the electricity output from the concentrating solar energy collector, and the electricity or cold output from the thermally driven device.