Heat storage and heat exchange device based on solar power generation

Abstract

The utility model discloses a heat storage and heat exchange device based on solar power generation, which comprises a working box, a heating module is arranged in the working box, the heating module comprises a microwave heating device, a reaction tank is arranged in the microwave heating device, and a cooling coil is arranged in the reaction tank. According to the utility model, the system utilizes the electric energy generated by conversion of the roof solar photovoltaic array to realize continuous and stable electric energy supply for the microwave heating unit; the phase-change material in the circulating phase-change cavity is rapidly heated and melted by utilizing the advantages of rapidness, uniformity and controllability of microwave heating, and cold water in the cooling coil is continuously heated by heat released by solidification of the phase-change material; the system integrates cleanness of the solar power generation technology, rapidness and uniformity of microwave heating and high heat storage performance of the phase change material, and environment protection and energy conservation of high-efficiency heat storage and exchange in the building are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat storage and heat exchange of solar power generation, and in particular to a heat storage and heat exchange device based on solar power generation. Background Art

[0002] Phase change heat storage mainly relies on the characteristics of phase change materials absorbing and releasing heat during the phase change process to store and release heat. To a certain extent, it combines the advantages of high thermochemical heat storage density and simple and mature sensible heat storage process, and has great development potential. However, in order to make the heat supply of phase change materials uniform, fast, highly selective, highly controllable and non-conductive, microwave heating is undoubtedly the most suitable. In a magnetic field, the molecules of some substances will be polarized. As the direction of the microwave field changes hundreds of millions of times per second, polar molecules always try to adjust their orientation at the same rate, causing polar molecules to rotate. When this rotation behavior is hindered by factors such as elastic scattering of atoms or lattice thermal vibration, it will cause energy dissipation, and electromagnetic energy will be converted into thermal energy, thereby causing the temperature of the material to rise. This method has the following characteristics: ① Rapid heating. The mechanism of microwave heating is completely different from that of traditional heating methods. It can penetrate into the interior of the material, so that heat energy is generated inside and outside the material at the same time. Its heating uniformity is good and heating is rapid. ② Selectivity is controllable. Microwave heating is selective. The heating speed and extraction efficiency can be improved by selecting appropriate heating objects to achieve the best extraction effect. ③Easy to control, immediate heating and termination can be achieved by controlling the microwave power.

[0003] At present, in China, especially in the north, the electricity consumption for heating is the "year-end" of the national grid every winter, and it is also the "hard bone" of the thermal systems of major cities. The energy and resources consumed by heating are very huge, so we seek a heating system that uses renewable energy to supply electricity and prevents a large amount of heat energy from being lost during the heating process. In summary, this new utility model combines solar power generation technology with phase change heat storage technology. The method of microwave heating with electric energy is used to heat the phase change material, and then the heat storage performance of the phase change material is used to make the storage-heat exchange process clean and efficient.

[0004] In response to the above problems, we propose a heat storage and heat exchange device based on solar power generation. Utility Model Content

[0005] The purpose of the utility model is to solve the defects in the prior art, thereby proposing a heat storage and heat exchange device based on solar power generation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A heat storage and heat exchange device based on solar power generation comprises a working box, a heating module is arranged in the working box, the heating module comprises a microwave heating device, a reaction tank is arranged in the microwave heating device, a cooling coil is arranged in the reaction tank, both ends of the cooling coil penetrate the side wall of the reaction tank and are respectively fixedly installed with a cold and hot exchange pump and a flow meter, a solar power supply module is arranged at the upper end of the working box, a transformer box is arranged in the working box, a storage battery is arranged on the side wall of the transformer box, and an electromagnetic stirring device is arranged on the inner wall of the reaction tank.

[0008] Preferably, the solar power supply module includes a photovoltaic solar panel and a solar controller, the solar controller is electrically connected to the photovoltaic solar panel, the battery is electrically connected to the photovoltaic solar panel through an inverter, and the transformer box is electrically connected to the heating module.

[0009] Preferably, the electromagnetic stirring device is fixedly mounted on the bottom inner wall of the reaction tank to stir the melted phase change material so that it is heated evenly.

[0010] Preferably, a first temperature sensor for detecting the temperature of the liquid inside the cooling coil is fixedly installed at the interface of the cold and heat exchange pump, and a second temperature sensor for detecting the temperature of the cavity is fixedly installed on the side wall of the reaction tank.

[0011] Preferably, the outer wall of the microwave heating device is provided with a control panel for parameter setting and an adjustment button for controlling the rotation speed of the electromagnetic stirring device.

[0012] Preferably, the transformer box is fixedly connected to the inner wall of the working box, and the battery is fixedly connected to the side wall of the transformer box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The system uses the electricity generated by the rooftop solar photovoltaic array to achieve a continuous and stable power supply to the microwave heating unit; the phase change material in the circulating phase change cavity is quickly heated and melted by the rapid, uniform and controllable advantages of microwave heating, and the heat released by the solidification of the phase change material continuously heats the cold water in the cooling coil; the system integrates the cleanliness of solar power generation technology, the rapid and uniform microwave heating and the high heat storage performance of phase change materials, realizing environmental protection and energy saving of high-efficiency storage-heat exchange in buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a heat storage and heat exchange device based on solar power generation proposed by the utility model;

[0016] Figure 2This is a partial cross-sectional structural schematic diagram of a heat storage and heat exchange device based on solar power generation proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the enlarged structure of a reaction tank in a heat storage and heat exchange device based on solar power generation proposed by the utility model.

[0018] In the figure: 1 working box, 2 microwave heating device, 3 reaction tank, 4 cooling coil, 5 heat exchange pump, 6 first temperature sensor, 7 second temperature sensor, 8 electromagnetic stirring device, 9 control panel, 10 adjustment button, 11 photovoltaic solar panel, 12 transformer box, 13 battery. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Reference Figure 1-Figure 3 , a heat storage and heat exchange device based on solar power generation, including a solar power supply module and a heating module; a cyclic phase change cavity is arranged inside the heating module, and the cyclic phase change cavity is filled with a phase change material, and the solar power supply module supplies power to the heating module device; the material of the cyclic phase change cavity in this embodiment is a heat preservation material that is resistant to strong alkali corrosion, high temperature and does not affect microwave conduction, and after being equipped with a sealing cover and sealed, the temperature drop value per unit time is less than 1 degree Celsius. Phase change materials cover the following categories: organic phase change heat storage materials include various fatty acids, paraffin, straight-chain alkanes, fatty alcohols, ester substances and various polymer PCMs; inorganic salt phase change heat storage materials include various nitrates, carbonates, fluoride salts, hydrochlorides and mixtures thereof. The phase change material installed in the cyclic phase change cavity, i.e., the reaction tank 3, is stable in nature during microwave heating, does not emit a large amount of gas, does not crack to generate other substances, has no safety hazards and has stable phase change performance.

[0022] A cooling coil 4 is buried in the phase change material. The cooling coil 4 is a two-way pipe fixed in the reaction tank 3 with good thermal conductivity, high temperature resistance and alkali resistance. The cooling coil 4 in the reaction tank 3 is coiled in a series of coiling forms with enlarged heating areas, such as spiral coiling and N-type coiling. The inlet and outlet are both outside the cyclic phase change cavity.

[0023] Specifically, in this embodiment, the solar power supply module includes a photovoltaic solar panel 11, a solar controller and a battery 13. The solar controller is electrically connected to the photovoltaic solar panel 11. The battery 13 is electrically connected to the photovoltaic solar panel 11 through an inverter, and is electrically connected to the heating module through a transformer box 12. The performance is stable. The battery 13 and the transformer box 12 are placed in the same module, installed and fixed inside the building, close to the microwave heating unit. The photovoltaic solar panel 11 is equipped with a solar controller, located on the top floor of the heating field to be supplied, and is not restricted by the floor. In this embodiment, the photovoltaic solar panel 11 is a crystalline silicon material including polycrystalline silicon and monocrystalline silicon, but is not limited to other types, such as amorphous silicon panels: thin-film solar cells, organic solar cells, chemical dye panels: dye-sensitized solar cells, flexible solar cells, and a series of solar cells with high power conversion rate and stable performance structure. The size and series arrangement of the photovoltaic array of the photovoltaic solar panel 11 depend on the energy supply demand in the building. The solar controller configured for the roof photovoltaic solar panel 11 is composed of a dedicated processor CPU, electronic components, display, switch power tube, etc. The photovoltaic array converts solar energy into electrical energy when there is light, and supplies power to the load through the solar charge and discharge controller, while charging the battery 13; when there is no light, the battery 13 supplies power to the DC load through the solar charge and discharge controller, and the battery 13 also directly supplies power to the transformer box 12, which inverts it into AC power to supply power to the AC load.

[0024] Furthermore, in this embodiment, the water inlet and outlet of the cooling coil 4 are respectively connected to a heat exchange pump and a flow meter. The heat exchange pump is located on one side of the circulating phase change cavity and is used to connect cold water and discharge hot water. The heat exchange pump can control the flow rate of cold water connection and hot water supply to ensure the continuity and stability of hot water output. The control method is integrated in the processor equipped with the device.

[0025] Furthermore, in this embodiment, the heating module is a variable frequency microwave heating furnace, and the cavity specifications comply with the national standards for microwave heating structure design.

[0026] Furthermore, in this embodiment, an electromagnetic stirring device 8 is installed at the bottom of the innermost circle of the cooling coil 4 to stir the melted phase change material so that it is heated evenly. The electromagnetic stirring device 8 has strong power and controllable speed.

[0027] Furthermore, in this embodiment, a first temperature sensor 6 for detecting the liquid inside the cooling coil 4 is provided at the interface of the heat exchange pump to monitor the temperature of the hot water supplied in real time. A second temperature sensor 7 for detecting the cavity temperature is provided in the cavity of the heating module. Specifically, it is a non-contact temperature sensor, which can monitor the spatial temperature of the microwave heating cavity in real time, and the monitored temperature data is fed back to the processor and displayed on the display screen, and the measured temperature error is less than ±0.5°C.

[0028] Furthermore, in this embodiment, a control panel 9 for parameter setting and an adjustment button 10 for controlling the rotation speed of the electromagnetic stirring device 8 are provided on the outer wall of the heating module.

[0029] In the utility model, when in use, the solar power generation storage-heat exchange system uses the electricity generated by the roof photovoltaic solar panel 11 as the basic energy source, and stores the electricity through the connecting wires and the storage battery 13. Then the microwave heating unit is powered by the transformer box 12. The device heats the phase change material in the reaction tank 3 evenly and quickly by microwave heating, and utilizes the characteristics of the phase change material in the reaction tank 3 that it melts after microwave heating, solidifies and releases heat when the temperature is lowered, and performs circulating water heating on the cooling coil 4 buried in the phase change material through the cold and heat exchange pump 5. The new solar power generation storage-heat exchange system aims to solve the problems of huge energy consumption, unstable heating, and serious loss of waste heat resources in the heating process by converting solar energy collection into electricity and performing stable heat storage and heat exchange in buildings. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat storage and heat exchange device based on solar power generation, comprising a working box (1), characterized in that: A heating module is arranged in the working box (1), and the heating module comprises a microwave heating device (2). A reaction tank (3) is arranged in the microwave heating device (2), and a cooling coil (4) is arranged in the reaction tank (3). Both ends of the cooling coil (4) penetrate the side wall of the reaction tank (3) and are respectively fixedly mounted with a cold and hot exchange pump (5) and a flow meter. A solar power supply module is arranged at the upper end of the working box (1). A transformer box (12) is arranged in the working box (1), and a storage battery (13) is arranged on the side wall of the transformer box (12). An electromagnetic stirring device (8) is arranged on the inner wall of the reaction tank (3).

2. A heat storage and heat exchange device based on solar power generation according to claim 1, characterized in that: The solar power supply module comprises a photovoltaic solar panel (11) and a solar controller, the solar controller is electrically connected to the photovoltaic solar panel (11), the storage battery (13) is electrically connected to the photovoltaic solar panel (11) via an inverter, and the transformer box (12) is electrically connected to the heating module.

3. A heat storage and heat exchange device based on solar power generation according to claim 1, characterized in that: The electromagnetic stirring device (8) is fixedly mounted on the bottom inner wall of the reaction tank (3) and is used to stir the melted phase change material so that it is heated evenly.

4. A heat storage and heat exchange device based on solar power generation according to claim 1, characterized in that: A first temperature sensor (6) for detecting the temperature of the liquid inside the cooling coil (4) is fixedly installed at the interface of the heat exchange pump (5), and a second temperature sensor (7) for detecting the temperature of the cavity is fixedly installed on the side wall of the reaction tank (3).

5. A heat storage and heat exchange device based on solar power generation according to claim 1, characterized in that: The outer wall of the microwave heating device (2) is provided with a control panel (9) for parameter setting and an adjustment button (10) for controlling the rotation speed of the electromagnetic stirring device (8).

6. A heat storage and heat exchange device based on solar power generation according to claim 1, characterized in that: The transformer box (12) is fixedly connected to the inner wall of the working box (1), and the storage battery (13) is fixedly connected to the side wall of the transformer box (12).

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