Photoelectric heat integrated hot water supply device

Abstract

The utility model relates to the field of renewable energy comprehensive utilization technology, concretely relates to photoelectric heat integration hot water supply device, including photoelectric module, heat pipe module, heat promotion module, heat storage water tank and support, photoelectric module includes photovoltaic board, photovoltaic board fixedly arranged on the inclined plane of support, is provided with electric heating element in heat storage water tank, photovoltaic board generates electricity and supplies electric energy to electric heating element, heat pipe module includes heat absorption plate, heat absorption plate sets up behind photovoltaic board, heat absorption plate is provided with heat pipe, heat pipe is provided with refrigerant, and the refrigerant in heat pipe absorbs the preheating evaporation behind photovoltaic board and becomes gas into compressor, and the high-temperature high-pressure gas after compression enters the water wall heat exchange between external condenser and heat storage water tank, and photovoltaic board supplies electric energy to compressor. The device integrates photovoltaic, light heat and electricity storage technology, improves the utilization rate of renewable energy, and can solve the electricity and heat problems of users in the non-electricity grid temporary construction area.

Description

Technical Field

[0001] This utility model relates to the field of comprehensive utilization technology of renewable energy, specifically to an integrated photovoltaic and thermal hot water supply device. Background Technology

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, the development and utilization of renewable energy has become an important way to solve the energy crisis and environmental problems. Solar energy, as a clean and pollution-free renewable energy source, is inexhaustible and is one of the most promising energy sources for development. The utilization of solar energy mainly includes two forms: photovoltaic conversion and photothermal conversion.

[0003] In the photoelectric conversion process, although solar cells can convert solar energy into electrical energy, their conversion efficiency is relatively low. Currently, the mainstream solar cell conversion efficiency ranges from approximately 13% to 26%, meaning that most of the solar energy is converted into heat energy rather than electrical energy. The heat accumulation during this energy conversion process causes the temperature of the photovoltaic panel backsheet to rise rapidly, which negatively impacts the photoelectric conversion efficiency and also shortens the lifespan of the solar cells.

[0004] On the other hand, in extremely cold or frigid regions, the surface of solar thermal panels is prone to frost formation. This not only reduces the photothermal conversion efficiency but also increases heat loss, significantly diminishing the performance of systems that rely solely on photothermal conversion technology in low-temperature environments. Therefore, how to effectively utilize the waste heat generated during the photovoltaic conversion process to improve the overall utilization rate of solar energy has become an urgent problem to be solved in the field of solar energy utilization.

[0005] In addition, in remote areas or temporary construction sites with insufficient infrastructure, users' electricity and heating needs are difficult to meet due to the lack of a stable power grid.

[0006] Therefore, developing a solar energy utilization system that can simultaneously meet users' needs for electricity and hot water and has self-sufficiency is of great practical significance and application value. Summary of the Invention

[0007] To address the aforementioned issues, this utility model provides an integrated photovoltaic and thermal hot water supply device. This device utilizes solar photovoltaic conversion and employs a compressor to heat-boost the waste heat from the photovoltaic backsheet to supply users with hot water at a suitable temperature, while simultaneously improving photovoltaic power generation efficiency. By integrating photovoltaic and solar thermal technologies, it effectively enhances the utilization rate of renewable energy and can solve the electricity and heat supply problems for users in temporary construction areas without power grids.

[0008] The technical solution of this utility model is as follows:

[0009] A photovoltaic-thermal integrated hot water supply device includes a photovoltaic module, a heat pipe module, a heat lifting module, a hot water storage tank, and a support frame. The hot water storage tank is fixedly mounted on the top of the support frame. The photovoltaic module includes a photovoltaic panel. The support frame has an inclined surface, and the photovoltaic panel is fixedly mounted on the inclined surface of the support frame. An electric heating element is installed inside the hot water storage tank. After generating electricity, the photovoltaic panel supplies electrical energy to the electric heating element. The heat pipe module includes a heat absorber plate, which is located behind the photovoltaic panel. A heat pipe is installed inside the heat absorber plate, and a refrigerant is installed inside the heat pipe. A DC compressor is installed inside the support frame. An external condenser is installed in the hot water storage tank. The refrigerant in the heat pipe absorbs preheating and evaporates behind the photovoltaic panel, turning into gas and entering the compressor. The high-temperature, high-pressure gas compressed by the compressor enters the external condenser and exchanges heat with the water in the hot water storage tank through a wall-to-wall heat exchange. The photovoltaic panel supplies electrical energy to the compressor.

[0010] Furthermore, the electric heating element is a heating wire.

[0011] Furthermore, an inverter is installed inside the bracket, and the photovoltaic panels generate electricity, which is then used to supply power to the electric heating elements after passing through the inverter.

[0012] Optionally, a storage battery is installed inside the bracket. After the photovoltaic panel generates electricity, it is stored in the storage battery. The storage battery then supplies power to the electric heating element through an inverter.

[0013] Furthermore, several heat pipes are arranged in parallel inside the heat absorber plate.

[0014] Furthermore, after generating electricity from the photovoltaic panels, the power is supplied to the electrical load via an inverter, or the power generated by the photovoltaic panels is stored in a battery and then supplied to the electrical load via an inverter.

[0015] Furthermore, a support pier is provided at the bottom of the support frame.

[0016] Furthermore, the hot water storage tank is equipped with a shower.

[0017] Furthermore, the refrigerant inside the heat pipe absorbs preheated vapor from behind the photovoltaic panel and becomes gas, which enters the compressor through refrigerant loop A. The high-temperature, high-pressure gas compressed by the compressor enters the external condenser through refrigerant loop B for heat exchange with the water in the hot water storage tank.

[0018] Furthermore, the refrigerant, after releasing heat and becoming liquid in the hot water storage tank, flows through refrigerant loop B to the expansion valve, and then flows back to the heat pipe after throttling.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model discloses a photovoltaic-thermal integrated hot water supply device, which improves the comprehensive utilization rate of solar energy: while generating electricity through photovoltaic panels, the device utilizes heat pipe modules to absorb the waste heat from the back of the photovoltaic panels, converting the originally wasted heat energy into useful heat energy to heat the water in the hot water storage tank. This photovoltaic-thermal synergistic utilization method significantly improves the comprehensive utilization rate of solar energy. After the refrigerant in the heat pipe module absorbs the waste heat from the back of the photovoltaic panels and evaporates, it enters the compressor for compression to form a high-temperature and high-pressure gas. Then, through an external condenser, it exchanges heat with the water in the hot water storage tank, transferring the heat to the water, realizing the recovery and reuse of waste heat, and further improving energy utilization efficiency.

[0021] 2. This utility model discloses a photovoltaic-thermal integrated hot water supply device, which improves the efficiency and stability of photovoltaic power generation: by absorbing the waste heat from the back panel of the photovoltaic panel through the heat pipe module, the temperature of the photovoltaic panel can be effectively reduced, thereby improving its photoelectric conversion efficiency; reducing the operating temperature of the photovoltaic panel helps to reduce material aging and performance degradation caused by high temperature, thereby extending the service life of the photovoltaic panel; the device is equipped with a battery and an inverter, and the remaining electrical energy after the photovoltaic panel generates electricity can be stored in the battery for use on cloudy or rainy days, ensuring that the device can still provide stable power supply when there is insufficient sunlight, thus improving the reliability of power supply.

[0022] 3. This utility model discloses a photovoltaic-thermal integrated hot water supply device, which meets the diverse energy needs of users: the water in the hot water storage tank undergoes indirect heat exchange with the high-temperature and high-pressure gas in the heat pipe module through an external condenser, and after being heated to a suitable temperature, it can be supplied to users as domestic hot water; after the photovoltaic panel generates electricity, part of the electrical energy is directly used to drive equipment such as compressors, and the other part of the electrical energy is converted into AC power by an inverter and can be supplied to the user's electrical load; the electric heating element in the device can provide additional heating capacity when the water temperature in the hot water storage tank is insufficient, so as to meet the diverse needs of users for water temperature.

[0023] 4. The present invention discloses a photovoltaic-thermal integrated hot water supply device. This photovoltaic-thermal integrated hot water supply device is highly adaptable and suitable for various application scenarios. The device does not require an external power source and can achieve self-sufficiency for users. It is particularly suitable for remote areas, areas with insufficient infrastructure, or temporary construction sites. By recovering the waste heat of the photovoltaic panel backsheet and using a heat boosting system for heating, it effectively solves the problem of easy frosting and large heat loss of photovoltaic thermal panels in severe cold and cold regions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the system structure of an integrated photoelectric and thermal hot water supply device according to an embodiment of the present invention;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] This utility model includes: 1. Photovoltaic panel, 2. Heat absorber plate, 3. Heat pipe, 4. Heating wire, 5. External condenser, 6. Hot water storage tank, 7. Refrigerant loop A, 8. Refrigerant loop B, 9. Bracket, 10. Support, 11. Compressor, 12. Throttling valve, 13. Battery, 14. Inverter, 15. Shower, 16. Electrical load. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0028] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0030] The integrated photovoltaic and solar thermal hot water supply system primarily provides hot water and electricity to decentralized users. This system utilizes solar photovoltaic conversion, employing a compressor to heat-boost the waste heat from the photovoltaic backsheets, supplying users with hot water at a suitable temperature while simultaneously improving photovoltaic power generation efficiency. By integrating photovoltaic and solar thermal technologies, this system effectively enhances the utilization rate of renewable energy and can solve the electricity and heat needs of users in temporary construction areas without power grid access.

[0031] like Figure 1As shown, the photovoltaic-thermal integrated hot water supply device consists of photovoltaic panel 1, heat absorber 2, heat pipe 3, heating wire 4, external condenser 5, hot water storage tank 6, refrigerant loop A7, refrigerant loop B8, bracket 9, support 10, DC compressor 11, battery 13, inverter 14, shower 15, and electrical load 16. The above equipment uses commonly used equipment and materials in this field, forming the following systems: photovoltaic system, heat pipe system, heat lifting system, electric heating system, and heat user system. These systems are interconnected and form an independent photovoltaic-thermal integrated hot water supply system by utilizing solar power generation and waste heat.

[0032] The bracket 9 is the supporting structure of the entire device. A hot water storage tank 6 is fixedly installed on its top. A photovoltaic panel 1 is installed on the inclined surface of the bracket 9. An adjustable support 10 is provided at the bottom of the bracket 9 to stabilize the device and adapt to different installation terrains.

[0033] The photovoltaic panel 1 is the core component of the photovoltaic module, used to convert solar energy into electrical energy. The power output terminal of the photovoltaic panel 1 is electrically connected to the electric heating element (heating wire 4) and the DC compressor 11.

[0034] The heat absorber plate 2 is attached to the back of the photovoltaic panel 1 to absorb the waste heat on the back of the photovoltaic panel 1. Multiple heat pipes 3 are arranged in parallel inside the heat absorber plate 2. The heat pipes 3 are filled with refrigerant to absorb the waste heat on the back of the photovoltaic panel 1 and transfer the heat to the gaseous section of the heat pipe 3 through phase change. At least three heat pipes 3 are arranged in parallel inside the heat absorber plate 2, and the axial direction of the heat pipes 3 is consistent with the tilt direction of the photovoltaic panel 1.

[0035] The hot water storage tank 6 is used to store hot water. The hot water storage tank 6 is equipped with an electric heating wire 4. When the water temperature in the tank is insufficient, the surplus electricity from photovoltaic power generation can be used to directly heat the water in the tank by energizing the electric heating wire 4.

[0036] The heat boosting module includes a DC compressor 11 fixed within a bracket 9, an external condenser 5, and a refrigerant circulation pipeline. Specifically: the gaseous section of the heat pipe 3 is connected to the inlet of the compressor 11 via a refrigerant loop A7; the outlet of the compressor 11 is connected to the external condenser 5 via a refrigerant loop B8. The external condenser 5 is immersed in a hot water storage tank 6 and is used to transfer condensation heat to the water in the hot water storage tank 6 through a partitioned heat exchanger; the outlet of the external condenser 5 returns to the liquid section of the heat pipe 3 via a throttling valve 12, forming a closed-loop circulation.

[0037] Preferably, the throttling valve 12 is an electronic expansion valve, which can throttle and compress the high-temperature and high-pressure liquid in the external condenser into low-temperature and low-pressure gas that enters the bottom of the heat pipe.

[0038] The electric heating element is a heating wire 4 installed in the hot water storage tank 6. The power output terminal of the photovoltaic panel 1 is directly connected to the heating wire 4, or it is connected to the heating wire 4 after being converted by the inverter 14.

[0039] The bracket 9 is also equipped with an inverter 14 and a battery 13. The power output of the photovoltaic panel 1 is converted by the inverter 14 and connected to the electric heating element, or the energy is stored in the battery 13 and supplied to the electric heating element through the inverter 14. The output of the inverter 14 is also connected to an electrical load 16 for supplying power to external equipment.

[0040] The operation process of this integrated photovoltaic and thermal hot water supply device is as follows:

[0041] When the weather is sunny and there is sufficient solar radiation, solar photovoltaic panels 1 are used to generate electricity to power compressor 11 and user load 16.

[0042] There are three circuit paths for photovoltaic panel 1 to generate electricity: first, after photovoltaic panel 1 generates electricity, it directly drives DC compressor 11; second, after photovoltaic panel 1 generates electricity, it supplies power to heating wire 4 and electrical load 16 via inverter 14; and third, the remaining power generated by photovoltaic panel 1 is stored in battery 13 for use on cloudy or rainy days.

[0043] A heat-absorbing plate 2 is placed behind the photovoltaic panel 1 to absorb the waste heat behind the back of the photovoltaic panel 1. Heat pipes 3 are placed side by side in the heat-absorbing plate 2. The liquid inside the heat pipes 3 is a refrigerant. The refrigerant liquid inside the heat pipe 3 evaporates into gas after absorbing the waste heat of the photovoltaic back panel. The lower middle part of the heat pipe 3 is the refrigerant liquid section, and the upper part of the heat pipe 3 is the refrigerant gas section.

[0044] The refrigerant gas from the upper part of the heat pipe 3 enters the compressor 11, and after further compression and pressurization, it enters the refrigerant loop B8. Then, it releases condensation heat through the external condenser 5. After releasing the condensation heat, the refrigerant enters the lower part of the heat pipe 3 through the throttle valve 12, completing a closed loop.

[0045] When the water temperature in the hot water storage tank 6 is insufficient, the surplus electricity from photovoltaic power generation can be used to directly heat the water in the tank by energizing the heating wire 4, so as to meet the user's water temperature requirements.

[0046] The refrigerant line 2 exchanges heat with the water inside the hot water storage tank 6 through a wall-to-wall heat exchange, releasing the condensation heat into the water tank for storage, and supplying hot water to the user's shower 15.

[0047] When the weather is sunny and there is sufficient solar radiation, solar photovoltaic panels 1 are used to generate electricity to power compressor 11 and user load 16.

[0048] When the weather is cloudy and solar radiation is moderate, solar photovoltaic panels 1 are still used to collect heat and generate electricity. When the water temperature in the hot water storage tank 6 is insufficient, the battery 13 supplements the heat to the water tank through the heating wire 4.

[0049] When the weather is cloudy and there is no solar radiation, the storage battery 13 heats the water tank through the heating wire 4 to meet the user's demand for hot water temperature.

[0050] This integrated photovoltaic and thermal hot water supply device combines solar power generation and solar thermal utilization, while simultaneously cooling the photovoltaic panels, thus improving photovoltaic power generation efficiency, extending the lifespan of the photovoltaic panels, and increasing the utilization rate of solar energy. It fully utilizes solar photovoltaic and thermal energy to meet users' heat and electricity needs, promotes distributed energy supply, and the entire process is self-sufficient. It can be used in remote areas with insufficient infrastructure or temporary construction sites. It achieves complementary advantages between photovoltaic components and solar thermal systems, realizing the dual utilization of solar energy resources and solving the drawbacks of solar thermal panels being prone to frosting and large heat loss in extremely cold and frigid regions.

[0051] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A photoelectric and thermal integrated hot water supply device, characterized in that, The system includes a photovoltaic module, a heat pipe module, a heat boosting module, a hot water storage tank (6), and a support (9). The hot water storage tank (6) is fixedly mounted on the top of the support (9). The photovoltaic module includes a photovoltaic panel (1). The support (9) has an inclined surface, and the photovoltaic panel (1) is fixedly mounted on the inclined surface of the support (9). An electric heating element is installed inside the hot water storage tank (6). After generating electricity, the photovoltaic panel (1) supplies electrical energy to the electric heating element. The heat pipe module includes a heat absorber plate (2), which is located behind the photovoltaic panel (1). A heat pipe (3) is installed inside the photovoltaic panel (1), and a refrigerant is installed inside the heat pipe (3). A DC compressor (11) is installed inside the bracket (9), and an external condenser (5) is installed in the hot water storage tank (6). The refrigerant in the heat pipe (3) absorbs the preheating and evaporation behind the photovoltaic panel (1) and becomes gas, which enters the compressor (11). The high-temperature and high-pressure gas compressed by the compressor (11) enters the external condenser (5) and exchanges heat with the water in the hot water storage tank (6) through the wall. The photovoltaic panel (1) supplies electricity to the compressor (11).

2. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The electric heating element is a heating wire (4).

3. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, An inverter (14) is installed inside the bracket (9). After the photovoltaic panel (1) generates electricity, it supplies power to the electric heating element through the inverter (14).

4. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The bracket (9) is equipped with a storage battery (13). After the photovoltaic panel (1) generates electricity, it is stored in the storage battery (13). The storage battery (13) supplies power to the electric heating element through the inverter (14).

5. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, Several heat pipes (3) are arranged in parallel inside the heat absorber plate (2).

6. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The photovoltaic panel (1) generates electricity and then supplies power to the electrical load (16) via the inverter (14), or the photovoltaic panel (1) generates electricity and stores it in the battery (13) and then supplies power to the electrical load (16) via the inverter (14).

7. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The bottom of the bracket (9) is provided with a support (10).

8. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The hot water storage tank (6) is equipped with a shower (15).

9. The photoelectric and thermal integrated hot water supply device as described in claim 1, characterized in that, The refrigerant in the heat pipe (3) absorbs the preheated vaporization behind the photovoltaic panel (1) and becomes gas. It enters the compressor (11) through the refrigerant loop A (7). The high-temperature and high-pressure gas compressed by the compressor (11) enters the external condenser (5) through the refrigerant loop B (8) and exchanges heat between the water in the hot water storage tank (6) and the wall.

10. The photoelectric and thermal integrated hot water supply device as described in claim 9, characterized in that, After the refrigerant releases heat and becomes liquid in the hot water storage tank (6), it flows through the refrigerant loop B (8) to the expansion valve (12), and after throttling, it flows back to the heat pipe (3).

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