阅读说明：本技术 一种风光互补式石墨烯集热装置及其制备方法 (Wind-light complementary type graphene heat collection device and preparation method thereof ) 是由 雷达 吴色音白拉 孟根其其格 于 2019-02-16 设计创作，主要内容包括：本发明公开了一种风光互补式石墨烯集热装置及其制备方法,所述风光互补式石墨烯集热装置具备：真空集热管、太阳能电池背板、风力发电机、蓄电池、逆变器、温度传感器、控制电路、保温水箱、支架,其中所述真空集热管包括以下制备步骤：首先在水或溶剂中配制一定浓度的石墨烯涂料,然后,在所述内玻璃管外表面上布置电极,采用上述石墨烯涂料,在所述内玻璃管外表面和布好的电极外表面上形成一层石墨烯加热膜,最后,进行抽真空封装。本发明提供的风光互补式石墨烯集热装置,不仅能够利用太阳能热吸收来加热,而且还能利用风能和光伏发电来加热,因此光能热转换效率更高,节能环保,具有非常大的市场和应用前景。(The invention discloses a wind-solar complementary graphene heat collecting device and a preparation method thereof, wherein the wind-solar complementary graphene heat collecting device comprises: the solar energy heat collecting device comprises a vacuum heat collecting tube, a solar cell backboard, a wind driven generator, a storage battery, an inverter, a temperature sensor, a control circuit, a heat preservation water tank and a support, wherein the vacuum heat collecting tube comprises the following preparation steps: preparing a graphene coating with a certain concentration in water or a solvent, arranging electrodes on the outer surface of the inner glass tube, forming a graphene heating film on the outer surface of the inner glass tube and the outer surface of the arranged electrodes by adopting the graphene coating, and finally carrying out vacuum-pumping packaging. The wind-solar complementary graphene heat collecting device provided by the invention can be used for heating by utilizing solar heat absorption and can also be used for heating by utilizing wind energy and photovoltaic power generation, so that the light energy and heat conversion efficiency is higher, the energy is saved, the environment is protected, and the wind-solar complementary graphene heat collecting device has a very large market and application prospect.)

1. A wind-solar complementary type graphene heat collecting device comprises: the solar heat collector comprises a vacuum heat collecting tube, a solar cell backboard, a wind driven generator, a storage battery, an inverter, a temperature sensor, a control circuit, a heat preservation water tank and a support, wherein the vacuum heat collecting tube comprises an outer glass tube with one open end and the other end sealed, an inner glass tube and a heat preservation rubber plug, the inner glass tube is sleeved in the outer glass tube through the rubber plug positioned at the open end of the outer glass tube, vacuum is formed between the inner glass tube and the outer glass tube, the open end of the vacuum heat collecting tube is mutually communicated with the heat preservation water tank, the temperature sensor is arranged in the heat preservation water tank, the support supports the vacuum heat collecting tube, the heat preservation water tank, the solar cell backboard and the like,

a first strip-shaped metal foil electrode and a second strip-shaped metal foil electrode are arranged on the outer surface of the inner glass tube, one end of each of the first strip-shaped metal foil electrodes and the second strip-shaped metal foil electrodes is respectively connected with two external electrodes on the heat-insulating rubber plug, and the other end of each of the first strip-shaped metal foil electrodes and the second strip-shaped metal foil electrodes axially symmetrically extends to one end of an opposite surface on the inner glass tube on the outer side surface of the inner glass tube or respectively surrounds a circle on the outer;

the outer surface of the inner glass tube is further coated with a graphene heating film with an electric heating function and a photo-thermal conversion function, the thickness of the film is 1-20 microns, and the graphene heating film covers the outer surfaces of the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode.

2. The wind-solar complementary graphene heat collecting device according to claim 1, wherein under the control of the control circuit, when the temperature inside the heat-insulating water tank is lower than a set temperature, the external electrode is electrically connected with the storage battery through the inverter, or is directly electrically connected with the solar battery backboard and the wind driven generator, and electrically heats the heat collecting tube;

and when the temperature in the heat-preservation water tank is higher than the set temperature, the external electrode is electrically disconnected with the storage battery, the solar cell backboard and the wind driven generator, and the solar cell backboard and the wind driven generator charge and store energy for the storage battery.

3. A preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the method comprises the following steps:

(1) preparing 1-20 mg/ml PVP solution in water or an organic solvent, adding sodium dodecyl benzene sulfonate to enable the concentration of the PVP solution to reach 2-6 mg/ml, adding worm expanded graphite powder, carrying out ultrasound for 2-5 h to obtain 5-20 mg/ml graphene slurry, then adding an additive, and stirring for 0.5-1 h to obtain a uniformly dispersed graphene coating;

(2) the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are distributed on the outer surface of the inner glass tube by adopting a metal foil adhesive tape;

(3) forming a layer of graphene heating film on the outer surface of the inner glass tube and the outer surfaces of the first and second strip-shaped metal foil electrodes which are well distributed by using the graphene coating prepared in the step (1), respectively welding one ends of the first and second strip-shaped metal foil electrodes with the two external electrodes on the heat-insulating rubber plug after the graphene heating film is naturally dried, and carrying out vacuum-pumping packaging to obtain the evacuated collector tube of the wind-light complementary graphene solar collector device;

(4) mounting the solar cell backboard on the support, and then mounting the vacuum heat collecting tubes on the blank spaces on the solar cell backboard side by side so that the open ends of the vacuum heat collecting tubes are communicated with the heat preservation water tank on the vacuum heat collecting tubes;

(5) and finally, mounting a circuit to obtain the wind-light complementary graphene heat collecting device.

4. The preparation method of the wind-solar complementary graphene heat collecting device according to claim 3, wherein: the organic solvent is any one or more of ethanol, tetrahydrofuran, ethyl acetate, NMP, DMF, ethylene glycol and dimethylacetamide.

5. The preparation method of the wind-solar complementary graphene solar heat collection device according to claim 3, characterized in that: the additive is any one or more of gold nanoparticles, silver nanoparticles, ferric oxide, manganese dioxide, copper oxide, conductive carbon black and carbon nanotubes.

6. The preparation method of the wind-solar complementary graphene heat collecting device according to claim 3, wherein: the weight ratio of the additive to the graphene is 1-2: 5.

7. The wind-solar complementary type graphene heat collecting device and the preparation method thereof as claimed in claims 1-3, wherein: the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are composed of any one or more of silver, copper and aluminum.

8. The wind-solar complementary type graphene heat collecting device and the preparation method thereof as claimed in claims 1-3, wherein: the control circuit is connected with the temperature sensor and the power supply in the heat-preservation water tank and can automatically control the electricity storage and heat storage of the wind-solar complementary graphene solar heat collection device.

Technical Field

The invention relates to the technical field of graphene energy storage, in particular to a wind-light complementary graphene heat collecting device and a preparation method thereof.

Background

A large amount of heating energy is needed in various fields of hot water bathing, winter heating, hot drying and the like, and the continuous development and utilization of green and environment-friendly new energy is the requirement of sustainable development of human society and economy. Wind energy and solar energy are one kind of green renewable energy which is continuously and incompletely obtained by the human beings in the nature. At present, the development and utilization of solar energy mainly include three types, namely photo-thermal utilization, photo-electric utilization, and photochemical utilization. In order to utilize solar energy to the maximum, various solar cells and trough type solar heat collection devices, such as flat plate trough type solar heat collection devices, vacuum tube trough type solar heat collection devices, etc., have been developed. However, these devices have single function, and in the using process, there are problems of low optical energy flux density, low optical energy conversion efficiency, intermittency and instability, etc. Particularly, for a heat collecting device of a solar water heater, the heat collecting device is limited by natural conditions such as day and night, seasons and the like in the using process and is influenced by weather such as sunny weather, cloudy weather, rain and the like due to heat, and when the water consumption of a user is large or the heat demand is high, the traditional heat collecting device can not meet the demand of the user. In this case, if heating or heating is performed by electric heating or combustion of fossil fuels such as coal, oil, and gas, not only is the cost high and the energy waste large, but also environmental pollution may be caused. In addition, in cold winter, the phenomenon that the heat collecting pipe is frozen due to too low temperature is more, which is equal to the shortening of the service life of the heat collecting pipe.

Wind energy is one of clean and renewable energy sources, wind resources in China are quite rich, and people mainly concentrate on utilizing the wind energy to generate electricity. The wind power generation system is a device for converting mechanical energy into electric energy by utilizing wind energy, and a wind power generator set can be divided into a horizontal axis wind power generator and a vertical axis wind power generator according to forms. The wind energy has great development potential as a new pollution-free renewable energy source, and has important significance particularly for grassland areas with extensive and rare land and coastal areas. In cloudy days or winter, the wind is generally large, and if the wind energy can be converted into electric energy or heat energy to assist the solar heat collection device to heat or supply heat, the utilization rate of renewable energy sources is improved, energy is saved, the environment is protected, and the freezing damage of the heat collection tube can be avoided. For example, when sunlight is sufficient or the user heat demand is less, store the electric energy that aerogenerator and solar photovoltaic cell were generated in the battery, and when the weather is not good or the user heat demand is great, utilize the electricity that aerogenerator and solar photovoltaic cell were generated to come direct to carry out the electrical heating or utilize the electricity of storing in the battery in advance to heat, just so can not only satisfy the multinomial needs of user, avoid the frost damage of thermal-collecting tube, but also can reach energy-concerving and environment-protective effect. However, how to combine the wind and light heating functions of the conventional solar heat collection device is the key to solve the above problems.

The graphene has very high electric conductivity and heat conductivity, and the specific resistance of the graphene is 2 × 10^-6Omega cm, the electron mobility can reach 2 × 10⁵cm²/V.S horizontal thermal conductivity at room temperature of about 5 × 10³W/m.K, and also has high thermal stability, chemical stability and excellent anti-permeability and anti-wear performance. In addition, a graphene film having a certain thickness has a very high light absorption function, and the electromagnetic wave absorption rate for various wavelength bands is close to 100%, and it is considered that the graphene film absorbs sunlight of all wavelength bands. Therefore, the solar heat collector has wide application in various fields such as mechanics, electronics, optics, heat, new energy and the like in recent years, and particularly has great application prospect in a heating device and a solar heat collector.

According to the report, the graphene can quickly generate heat under a lower voltage, and has the characteristics of large heating area, uniform heating, light use, difficulty in oxidation, long service life and the like, so that the graphene is already applied to low-temperature heating products such as health care, heating and the like. However, few reports have been made on a wind-solar complementary graphene heat collecting device that can heat by using both light energy and wind energy.

Disclosure of Invention

The invention aims to solve the problems in the prior art and discloses a wind-light complementary graphene heat collecting device which is simple in structure, energy-saving, environment-friendly, low in cost and long in service life and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

a wind-solar complementary type graphene heat collecting device comprises: the solar energy heat collecting tube comprises a vacuum heat collecting tube, a solar cell backboard, a wind driven generator, a storage battery, an inverter, a temperature sensor, a control circuit, a heat preservation water tank and a support, wherein the vacuum heat collecting tube comprises an outer glass tube with one open end and the other end sealed, an inner glass tube and a heat preservation rubber plug, the inner glass tube is sleeved in the outer glass tube through the rubber plug positioned at the open end of the outer glass tube, vacuum is formed between the inner glass tube and the outer glass tube, the open end of the vacuum heat collecting tube is mutually communicated with the heat preservation water tank, the temperature sensor is arranged in the heat preservation water tank, the support supports the vacuum heat collecting tube, the heat preservation water tank, the solar cell backboard and the like, and the solar energy heat collecting tube is characterized in that a first strip-shaped metal foil electrode and a second strip-shaped metal foil electrode are arranged on the, one end of the insulating rubber plug is connected with two external electrodes on the insulating rubber plug, and the other end of the insulating rubber plug axially symmetrically extends to one end of the opposite surface of the inner glass tube on the outer side surface of the inner glass tube or respectively surrounds the outer side surfaces of the two ends of the inner glass tube for a circle; a layer of graphene heating film with both an electric heating function and a photo-thermal conversion function is further coated on the outer surface of the inner glass tube, the thickness of the film is 1-20 microns, and the graphene heating film covers the outer surfaces of the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode; under the control of the control circuit, when the temperature in the heat-preservation water tank is lower than a set temperature, the external electrode is electrically connected with the storage battery through the inverter, or is directly electrically connected with the solar cell backboard and the wind driven generator, and the heat collection pipe is electrically heated; and when the temperature in the heat-preservation water tank is higher than the set temperature, the external electrode is electrically disconnected with the storage battery, the solar cell backboard and the wind driven generator, and the solar cell backboard and the wind driven generator charge and store energy for the storage battery.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps:

(1) preparing 1-20 mg/ml PVP solution in water or an organic solvent, adding sodium dodecyl benzene sulfonate to enable the concentration of the PVP solution to reach 2-6 mg/ml, adding worm expanded graphite powder, carrying out ultrasound for 2-5 h to obtain 5-20 mg/ml graphene slurry, then adding an additive, and stirring for 0.5-1 h to obtain a uniformly dispersed graphene coating;

(2) the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are distributed on the outer surface of the inner glass tube by adopting a metal foil adhesive tape;

(3) forming a layer of graphene heating film on the outer surface of the inner glass tube and the outer surfaces of the first and second strip-shaped metal foil electrodes which are well distributed by using the graphene coating prepared in the step (1), respectively welding one ends of the first and second strip-shaped metal foil electrodes with the two external electrodes on the heat-insulating rubber plug after the graphene heating film is naturally dried, and carrying out vacuum-pumping packaging to obtain the evacuated collector tube of the wind-light complementary graphene solar collector device;

(4) mounting the solar cell backboard on the support, and then mounting the vacuum heat collecting tubes on the blank spaces on the solar cell backboard side by side so that the open ends of the vacuum heat collecting tubes are communicated with the heat preservation water tank on the vacuum heat collecting tubes;

(5) and finally, mounting a circuit to obtain the wind-light complementary graphene heat collecting device.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the organic solvent is any one or more of ethanol, tetrahydrofuran, ethyl acetate, NMP, DMF, ethylene glycol and dimethylacetamide.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the additive is any one or more of gold nanoparticles, silver nanoparticles, ferric oxide, manganese dioxide, copper oxide, conductive carbon black and carbon nanotubes.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the weight ratio of the additive to the graphene is 1-2: 5.

The invention discloses a wind-solar complementary graphene heat collecting device and a preparation method thereof, and is characterized in that: the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are composed of any one or more of silver, copper and aluminum.

The invention discloses a wind-solar complementary graphene heat collecting device and a preparation method thereof, and is characterized in that: the control circuit is connected with the temperature sensor and the power supply in the heat-preservation water tank and can automatically control the electricity storage and heat storage of the wind-solar complementary graphene solar heat collection device.

Technical effects of the invention

According to the technical scheme, the wind-light complementary type graphene heat collecting device and the preparation method thereof can be energy-saving and environment-friendly, high in heat conversion rate, and capable of collecting heat in cloudy days or at night, and does not need to be divided into seasons. This complementary graphite alkene solar heat collection device of geomantic omen not only can utilize solar thermal energy to absorb and heat, but also can utilize wind energy and photovoltaic power generation to heat, therefore light energy heat conversion efficiency is higher, and rate of heating is faster, long service life is a green's novel product. The solar energy water heater can provide hot water for bathing in vast rural pasturing areas, remote mountainous areas and independent villas, and simultaneously can supply heat, heat and power for users in cold winter, so that the solar energy water heater has great industrialization and market prospects.

Detailed Description

The wind-solar complementary graphene heat collecting device and the preparation method thereof of the present invention are explained in detail below.

The invention discloses a wind-solar complementary graphene heat collecting device which comprises a vacuum heat collecting tube, a solar cell backboard, a wind driven generator, a storage battery, an inverter, a temperature sensor, a control circuit, a distribution box, a heat preservation water tank and a support. The vacuum heat collecting pipe is composed of an outer glass pipe, an inner glass pipe and a heat-preserving rubber plug, wherein one end of the outer glass pipe is open, and the other end of the inner glass pipe is closed. The inner glass tube is sleeved in the outer glass tube through the rubber plug positioned at the opening end of the outer glass tube, and vacuum is formed between the inner glass tube and the outer glass tube. The open end of the vacuum heat collecting pipe is communicated with the heat preservation water tank, and the temperature sensor is arranged in the heat preservation water tank. The bracket supports the vacuum heat collecting tube, the heat preservation water tank, the solar cell backboard and the like. The outer surface of the inner glass tube is provided with a first strip-shaped metal foil electrode and a second strip-shaped metal foil electrode, one end of each of the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode is connected with two external electrodes on the heat-insulating rubber plug respectively, and the other end of each of the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode axially symmetrically extends to one end of an opposite surface on the inner glass tube on the outer side surface of the inner glass tube or surrounds a circle on the outer side. The outer surface of the inner glass tube is further coated with a graphene heating film with an electric heating function and a photo-thermal conversion function, the thickness of the film is 1-20 microns, and the graphene heating film covers the outer surfaces of the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode. Under the control of the control circuit, when the temperature in the heat-preservation water tank is lower than a set temperature, the external electrode is electrically connected with the storage battery through the inverter, or is directly electrically connected with the solar cell backboard and the wind driven generator, and the heat collection pipe is electrically heated; and when the temperature in the heat-preservation water tank is higher than the set temperature, the external electrode is electrically disconnected with the storage battery, the solar cell backboard and the wind driven generator, and the solar cell backboard and the wind driven generator charge and store energy for the storage battery.

The preparation method of the wind-solar complementary graphene heat collecting device comprises the following steps:

(1) preparing 1-20 mg/ml PVP solution in water or an organic solvent, adding sodium dodecyl benzene sulfonate to enable the concentration of the PVP solution to reach 2-6 mg/ml, adding worm expanded graphite powder, carrying out ultrasound for 2-5 h to obtain 5-20 mg/ml graphene slurry, then adding an additive, and stirring for 0.5-1 h to obtain a uniformly dispersed graphene coating;

(2) the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are distributed on the outer surface of the inner glass tube by adopting a metal foil adhesive tape;

(3) forming a layer of graphene heating film on the outer surface of the inner glass tube and the outer surfaces of the first and second strip-shaped metal foil electrodes which are well distributed by using the graphene coating prepared in the step (1), respectively welding one ends of the first and second strip-shaped metal foil electrodes with the two external electrodes on the heat-insulating rubber plug after the graphene heating film is naturally dried, and carrying out vacuum-pumping packaging to obtain the evacuated collector tube of the wind-light complementary graphene solar collector device;

(4) mounting the solar cell backboard on the support, and then mounting the vacuum heat collecting tubes on the blank spaces on the solar cell backboard side by side so that the open ends of the vacuum heat collecting tubes are communicated with the heat preservation water tank on the vacuum heat collecting tubes;

(5) and finally, mounting a circuit to obtain the wind-light complementary graphene heat collecting device.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the organic solvent is any one or more of ethanol, tetrahydrofuran, ethyl acetate, NMP, DMF, ethylene glycol and dimethylacetamide.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the additive is any one or more of gold nanoparticles, silver nanoparticles, ferric oxide, manganese dioxide, copper oxide, conductive carbon black and carbon nanotubes.

The preparation method of the wind-solar complementary graphene heat collecting device is characterized by comprising the following steps: the weight ratio of the additive to the graphene is 1-2: 5.

The invention discloses a wind-solar complementary graphene heat collecting device and a preparation method thereof, and is characterized in that: the first strip-shaped metal foil electrode and the second strip-shaped metal foil electrode are composed of any one or more of silver, copper and aluminum.

The invention discloses a wind-solar complementary graphene heat collecting device and a preparation method thereof, and is characterized in that: the control circuit is connected with the temperature sensor and the power supply in the heat-preservation water tank and can automatically control the electricity storage and heat storage of the wind-solar complementary graphene heat collecting device.

In order to further understand the wind-solar complementary graphene heat collecting device and the preparation method thereof of the present invention, the following describes the wind-solar complementary graphene heat collecting device and the preparation method thereof in detail through embodiments.