Hybrid solar thermal and photovoltaic panel and heat pump and non-tracking non-imaging solar concentrator based csp stabilized power generation system

Abstract

A hybrid solar thermal and photovoltaic panel based cogeneration system and heat pump and non-tracking non-imaging solar concentrator based CSP stabilized power generation system comprises a hybrid solar thermal and photovoltaic panel based cogeneration subsystem to cogenerate electricity and heat, a heat pump subsystem to raise the temperature of the cogenerated heat, a non-tracking non-imaging solar concentrator based CSP subsystem to further upgrade the cogenerated thermal energy, a thermal storage to store the cogenerated heat, and a thermal power regeneration system to take the stored cogenerated heat to regenerate power. The power output of the cogeneration subsystem supplemented with the power output from the thermal power regeneration system realizes stabilized power output.

Claims

1. A hybrid solar thermal and photovoltaic panel based cogeneration system and heat pump and non-tracking non-imaging solar concentrator based CSP stabilized power generation system comprising: a. A hybrid solar thermal and photovoltaic panel based cogeneration subsystem, which further comprises the hybrid solar thermal and photovoltaic panel array, pumps, and valves; b. A non-tracking non-imaging solar concentrator based CSP subsystem, which further comprises the non-tracking non-imaging solar concentrators, pumps and valves; c. A thermal storage subsystem, which serves as both thermal storage and boiler; d. A thermal power regeneration subsystem, which further comprises a valve, pump, thermal engines, which can be steam engine, sterling engine, Organic Rankin Cycle (ORC) engine, or combination of thereof, condenser; e. A heat pump subsystem, which comprises a valve, a pump, and a heat pump; f. A battery subsystem; g. A control subsystem; Wherein, the photovoltaic part of the cogeneration subsystem is connected to the battery subsystem through electric cable and controller; the battery subsystem is connected to the heat pump subsystem through electric cable and controller; the thermal part of the cogeneration subsystem is connected to the heat pump subsystem through valve and pump; the heat pump subsystem is connected to the thermal storage subsystem through the valve and pump; the CSP subsystem is connected to the thermal storage subsystem through the valve and pump; the thermal power regeneration subsystem is connected to the thermal storage subsystem through valve and pump; the control subsystem connects to the battery subsystem and the CSP subsystem. Wherein, the hybrid solar thermal and photovoltaic panel based cogeneration subsystem generates electricity, which is conducted to the battery subsystem for storage, and thermal energy, which is transferred to the heat pump subsystem to raise temperature; the heat cogenerated by the subsystem and upgraded by the heat pump subsystem is transferred to the thermal storage subsystem for storage; the stored thermal energy in the thermal storage subsystem is further upgraded by the non-tracking non-imaging solar concentrator based CSP subsystem; then the stored thermal energy in the thermal storage subsystem is extracted by the thermal regeneration subsystem to regenerate electricity; wherein, the cogeneration subsystem cogenerated electricity can be directly supply to outside and supplemented by the power regeneration subsystem to realize the stabilized power generation with the coordination from a control system.

2. The hybrid solar thermal and photovoltaic panel of the claim 1 comprises a photovoltaic panel laminated on a metal plate with circulation pipes, a transparent glass cover, and a frame work.

3. The non-tracking non-imaging solar concentrator of the claim 1 comprises a CPC concentrator with a domed transparent cover and a domed divergent Fresnel lens on the top of the domed transparent cover, as well as a thermal receiver.

4. The thermal engines of the claim 1 can be steam engine, sterling engine, ORC engine, or combination thereof.

5. A control system is included into the system of claim 1 to coordinate the power output of the hybrid solar thermal and photovoltaic panel based cogeneration subsystem of claim 1 and the power output of the non-tracking non-imaging solar concentrator based CSP subsystem of claim 1 to realize stabilized power generation.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and together with the description, serve to explain the principles of the invention.

[0014] FIG. 1 diagrammatically illustrates the hybrid solar thermal and photovoltaic panel based cogeneration system and heat pump system and non-tracking non-imaging solar concentrator based CSP system stabilized power generation system.

[0015] FIG. 2 is the cross section view of the hybrid solar thermal and photovoltaic panel used to construct the thermal energy and electricity cogeneration subsystem. Wherein, the photovoltaic cells are laminated on the fin-pipe plate coated with a heat-conductive and insulation coating to form the core part of the panel.

[0016] FIG. 3 is the illustration of the work principle of the non-imaging solar concentrator. The incident light no matter the diffuse light I.sub.d or the beam light I.sub.b, as long as their incident angles fall in the half-acceptance angle θ.sub.C, will be concentrated onto receiver at the bottom of the non-imaging solar concentrator.

[0017] FIG. 4 is the configuration of the non-tracking non-imaging solar concentrator, wherein the non-tracking non-imaging solar concentrator is a combination of Compound Parabolic Concentrator and a domed divergent Fresnel Lens cover.

[0018] FIG. 5 illustrates the work principle of the non-tracking non-imaging solar concentrator, wherein the domed divergent Fresnel Lens cover enlarges the acceptance-half angle of the CPC.

DETAILED DESCRIPTION

[0019] Reference will now be made in detail to the present exemplary embodiment, example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0020] Referring to FIG. 1, the hybrid solar thermal and photovoltaic panel based cogeneration system and heat pump system and non-tracking non-imaging solar concentrator based CSP system stabilized power generation system comprises: (1) the hybrid solar thermal and photovoltaic panel based cogeneration subsystem 100, which further comprises the hybrid solar thermal and photovoltaic panel array 130, pump 120, and valve 110; (2) the non-tracking non-imaging solar concentrator based CSP subsystem, which further comprises the non-tracking non-imaging solar concentrators 230, pump 220 and valve 210; (3) the thermal storage subsystem 300, which serves as both thermal storage and boiler; (4) the thermal power regeneration subsystem 400, which further comprises the valve 410, pump 420, thermal engines 430, which can be steam engine, sterling engine, Organic Rankin Cycle (ORC) engine, or combination of thereof, condenser 440; (5) the heat pump subsystem 500, which comprises the valve 510, pump 520, and heat pump 530; (6) the battery subsystem 600; (7) control subsystem 700. Wherein, the photovoltaic part of the subsystem 100 is connected to the subsystem 600 through electric cable and controller; the subsystem 600 is connected to the subsystem 500 through electric cable and controller; the thermal part of the subsystem 100 is connected to the subsystem 500 through valve 110 and pump 120; the subsystem 500 is connected to the subsystem 300 through the valve 510 and pump 520; the subsystem 200 is connected to the subsystem 300 through the valve 210 and pump 220; the subsystem 400 is connected to the subsystem 300 through the valve 410, pump 420. Wherein, the hybrid solar thermal and photovoltaic panel based cogeneration subsystem 100 generates electricity, which is conducted to the battery subsystem 600 for storage, and thermal energy, which is transferred to the heat pump subsystem 500 to raise temperature. The heat cogenerated by the subsystem 100 and upgraded by the subsystem 500 is transferred to the thermal storage subsystem 300 for storage. The stored thermal energy in subsystem 300 is further upgraded by the non-tracking non-imaging solar concentrator based CSP subsystem 200. Then the stored thermal energy in the subsystem 300 is extracted by the thermal regeneration subsystem 400 to regenerate electricity. Wherein, the subsystem 100 cogenerated electricity can be directly supply to outside and supplemented by the power regeneration subsystem 400 to realize the stabilized power generation with the coordination from the control subsystem 700; the control subsystem 700 connects to the battery subsystem 600 and the CSP subsystem 400.

[0021] Referring to FIG. 2, the core part of the hybrid solar thermal and photovoltaic panel is formed by laminating the photovoltaic cells 133 onto the metal plate with the circulation pipes 132. When in operation, the sunlight penetrates through the transparent cover 134 and reaches to the photovoltaic cells, where it is absorbed and converted into electricity and heat. Where the 131 is the frame work of the panel. The electricity will be stored in the battery storage 600, and the heat will be extracted out by fluid circulation and transferred to the subsystem 500.

[0022] Referring to FIG. 3, the non-tracking non-imaging solar concentrator 230 is firstly formed by combining a top transparent dome 231 and a bottom reflective Compound Parabolic Concentrator (CPC) 232 together, and the central lines of the 2 parabola used to construct the CPC form the half-acceptance angles θ.sub.C with the central line of the non-tracking non-imaging solar concentrator. The incident beam light I.sub.b and diffuse light I.sub.d form the incident angles with the central line of the non-tracking non-imaging solar concentrator 230. As long as the incident angles are smaller than the θ.sub.C, all incident lights no matter beam light or diffuse light will be concentrated to the bottom receiver.

[0023] Referring to FIG. 4, in order to realize non-tracking, a domed divergent Fresnel Lens 233 is added on the top of the domed transparent cover 231 to enlarge the acceptance-half angle θ.sub.C of CPC 232.

[0024] Referring to the FIG. 5, the work principle of the non-tracking non-imaging solar concentrator 230 is illustrated, wherein the obliquely incident sunlight 1000 is refracted by the domed divergent Fresnel Lens 233 to force it falling in the acceptance-half angle θ.sub.C of CPC 232 and concentrate it to the receiver 234.

[0025] In the preceding specification, various preferred embodiments have been described with reference to the accompanying drawings. It will, however, be evident that various other modifications and changes may be made thereto, and additional embodiments may be implemented, without departing from the broader scope of the invention as set forth in the claims that follow. The specification and drawings are accordingly to be regarded in an illustrative rather than restrictive sense.

[0026] Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.