Hydrogen-electricity co-production device driven by full solar energy

Abstract

The utility model relates to the technical field of solar energy utilization and energy conversion, in particular to a hydrogen-electricity co-production device driven by full solar energy, which comprises a reactor, and the reactor is provided with two light windows which are respectively positioned on the top and the side surface of the reactor. The reactor is connected with an air inlet pipe and an air outlet pipe, and pipe orifices of the air inlet pipe and the air outlet pipe are connected with spherical connecting ports. The periphery of the reactor is coated with a temperature difference power generation assembly, and the periphery of the temperature difference power generation assembly is provided with a condensate pipe. The hydrogen production reactor has the advantages that the double light windows are arranged on the top and the side surfaces, so that sunlight can uniformly irradiate the inside of the hydrogen production reactor, and efficient and stable hydrogen production is realized. By arranging the temperature difference power generation assembly, waste heat generated in the solar water decomposition hydrogen production process is converted into electric energy, and efficient utilization of energy is achieved. As the temperature difference between the condensate pipe and the thermoelectric power generation assembly is increased, the power generation effect is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to clean energy utilization and energy conversion technical field especially relates to a kind of hydrogen electricity cogeneration devices of full solar drive. BACKGROUND

[0002] The existing solar water-splitting hydrogen production technology, especially the photocatalytic water-splitting hydrogen production technology using powder catalyst, still has problems such as narrow light absorption range of catalyst, low hydrogen production efficiency and poor stability of powder catalyst, which limits the further development of solar water-splitting hydrogen production technology.

[0003] In recent years, various excellent photocatalysts have been developed, which can expand the spectral absorption range and enhance the utilization rate of low-energy photons, thereby improving the efficiency of solar water-splitting hydrogen production. However, the system-level energy efficiency problem of solar water-splitting hydrogen production devices still cannot be effectively solved, which limits the large-scale application of solar water-splitting hydrogen production technology.

[0004] The solar water-splitting hydrogen production device still has the following shortcomings:

[0005] 1. The low-grade waste heat recovery efficiency of the solar water-splitting hydrogen production device is low, especially the utilization efficiency of infrared light which accounts for most of the solar spectrum is low, and it is difficult to fully recover and utilize the waste heat generated during the solar water-splitting hydrogen production process.

[0006] 2. The cost of the solar water-splitting hydrogen production device is high, not only using noble metal catalyst, but also needing to maintain the device frequently.

[0007] 3. The stability and durability of the solar water-splitting hydrogen production device are insufficient. The service life of laboratory-level devices can reach thousands of hours, but actual large-scale devices may have problems such as material cracking caused by thermal stress, sealing failure and structural deformation of large-size devices, which leads to a sharp decrease in service life in actual application. SUMMARY

[0008] To solve the above problems, the utility model discloses a kind of hydrogen electricity cogeneration devices of full solar drive, realize the efficient recovery of waste heat, realize hydrogen electricity cogeneration.

[0009] A kind of hydrogen electricity cogeneration devices of full solar drive, including reactor, the side of the upper half of the reactor is connected with inlet pipe and outlet pipe respectively;The thermoelectric generation assembly is covered on the outer surface of the reactor;The thermoelectric generation assembly includes top copper electrode, P-type semiconductor, N-type semiconductor, polyimide flexible substrate and bottom copper electrode, there is gap between the P-type semiconductor and N-type semiconductor and is alternately arranged on the polyimide flexible substrate;Wherein the top and bottom of P-type semiconductor, N-type semiconductor are connected with top copper electrode and bottom copper electrode respectively.

[0010] Further, the P-type semiconductor and the N-type semiconductor are alternately arranged and form an S-type series topology.

[0011] Further, the top copper electrode and the bottom copper electrode are connected with the semiconductor by soldering.

[0012] Further, the height of the thermoelectric generator assembly is lower than the height of the gas inlet pipe and the gas outlet pipe.

[0013] Further, the top of the reactor is connected with a top light window, and the side of the reactor is connected with a side light window.

[0014] Further, the terminal of the gas inlet pipe and the gas outlet pipe is connected with a spherical connecting port.

[0015] Further, the spherical connecting port is connected with an online micro gas analysis system.

[0016] Further, the periphery of the thermoelectric generator assembly is surrounded by a condensate pipe, and the condensate pipe is closely attached to the periphery of the thermoelectric generator assembly in a spiral manner.

[0017] The working process of the utility model is as follows:

[0018] By opening the top light window, the necessary materials for photocatalytic reaction such as photocatalyst and reaction solvent are added into the reactor, the height of the reaction liquid is lower than the gas inlet pipe and the gas outlet pipe on the side of the upper half of the reactor, so as to avoid the circulation of the interfering gas, the full-solar-driven hydrogen and electricity cogeneration device is placed in a place with sunlight, since the reactor has the top light window and the side light window, the sunlight can be efficiently collected by using the Fresnel lens, and the inside of the reactor is irradiated through the top light window and the side light window at the same time, so as to avoid the uneven distribution of the solution temperature in the reactor, realize the efficient and stable preparation of hydrogen, the hydrogen generated in the reactor enters the gas outlet pipe, and the terminal of the gas outlet pipe is connected with a spherical connecting port; the spherical connecting port can be connected with the Labsolar-6A full-glass automatic online micro gas analysis system of Beijing Pofite Technology Co., Ltd., so as to form the automatic circulation and automatic analysis of the gas, and the operation is simple and good in practicality.

[0019] By wrapping the thermoelectric generator assembly 7 around the periphery of the reactor, the low-grade waste heat in the process of splitting water by sunlight to produce hydrogen can be efficiently converted into electric energy, only by using solar energy, the low-grade waste heat can be recycled through the thermoelectric principle while producing hydrogen, resources are saved, it is green and clean, the condensate pipe is closely attached to the periphery of the thermoelectric generator assembly in a spiral manner, the temperature difference between the two sides of the thermoelectric generator assembly can be increased, it is suitable for use in the case of greater demand for power generation, and it is convenient to install and disassemble, can be operated according to different conditions, simple operation, good practicality.

[0020] The utility model has the advantages that:

[0021] 1. By setting the top and side double light window, the sunlight can be evenly irradiated to the inside of the hydrogen production reactor, realizing efficient and stable hydrogen production.

[0022] 2. By setting the thermoelectric power generation assembly, the waste heat in the solar water decomposition hydrogen production process is converted into electric energy, realizing efficient utilization of energy.

[0023] 3. Due to the condensate pipe, the temperature difference of the two sides of the thermoelectric power generation assembly is increased, and the power generation effect is enhanced.

[0024] 4. Flexible design: The flexible base makes the thermoelectric power generation assembly can tightly cover the cylindrical reactor side wall, ensuring high waste heat transfer efficiency.

[0025] 5. S-shaped series topology: The S-shaped layout prolongs the carrier migration path and compresses the space occupation, significantly improves the utilization rate of thermoelectric material per unit area, and enhances the bending resistance of the structure, suitable for long-term stable operation in complex curved surface environment.

[0026] 6. Liquid phase heat storage realizes all-day power generation: The thermoelectric power generation assembly can still rely on liquid phase heat storage to release the energy accumulated during the day at night, realizing continuous power generation all day, breaking through the barriers of traditional system day and night operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0028] Figure 2 It is a rear view of the utility model;

[0029] Figure 3 It is a front structure schematic view of the thermoelectric power generation assembly of the utility model.

[0030] Figure 4 It is a back structure schematic view of the thermoelectric power generation assembly of the utility model.

[0031] LIST OF REFERENCE NUMBERS: 1-reactor, 2-top light window, 3-side light window, 4-inlet pipe, 5-outlet pipe, 6-spherical connecting port, 7-thermoelectric power generation assembly, 71-top copper electrode, 72-P-type semiconductor, 73-N-type semiconductor, 74-polyimide base, 75-bottom copper electrode, 8-condensate pipe. DETAILED DESCRIPTION

[0032] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0033] like Figures 1-2 As shown, a fully solar-powered hydrogen-electric cogeneration device includes a reactor 1, with a top light window 2 connected to the top of the reactor 1 and a side light window 3 connected to the side of the reactor 1. An inlet pipe 4 and an outlet pipe 5 are connected to the side of the upper half of the reactor 1. A thermoelectric generator 7 surrounds the reactor 1, and the height of the thermoelectric generator 7 is lower than the height of the inlet pipe 4 and the outlet pipe 5.

[0034] The inlet pipe 4 and outlet pipe 5 are connected to a spherical connector 6, which can be connected to the Labsolar-6A all-glass automatic online trace gas analysis system of Beijing Pofilai Technology Co., Ltd.

[0035] like Figures 3-4 As shown, the thermoelectric generator 7 is covered on the outer surface of the reactor 1; the thermoelectric generator 7 includes a top copper electrode 71, a P-type semiconductor 72, an N-type semiconductor 73, a polyimide flexible substrate 74, and a bottom copper electrode 75. The P-type semiconductor 72 and the N-type semiconductor 73 are alternately arranged on the polyimide flexible substrate 74 with gaps between them; the top and bottom of the P-type semiconductor 72 and the N-type semiconductor 73 are connected to the top copper electrode 71 and the bottom copper electrode 75, respectively.

[0036] Specific arrangement: S-shaped series topology. The bottom layer is a transparent flexible polyimide substrate 74. Each P-type semiconductor and N-type semiconductor is alternately connected via bottom and top copper electrodes, forming an S-shaped series topology.

[0037] Specific fabrication steps: During the fabrication process, a 2 μm nickel layer and a 1 μm solder layer are first deposited on the upper and lower surfaces of the P-type and N-type semiconductors, respectively, to optimize the interfacial conductivity. Then, the P-type and N-type semiconductors are soldered to the copper electrode patch surface in an S-shaped serpentine path using medium-temperature solder paste. Next, the copper electrodes are staggered and soldered to the upper surfaces of the P-type and N-type semiconductors to form a continuous S-shaped series circuit.

[0038] The thermoelectric generator 7 is surrounded by a condensate pipe 8, which is tightly attached to the outside of the thermoelectric generator 7 in a spiral pattern. This increases the temperature difference between the two sides of the thermoelectric generator 7, making it suitable for use in situations where there is a greater demand for power generation. It is also easy to install and disassemble.

[0039] The full solar energy driven hydrogen and electricity cogeneration device of the embodiment uses the reactor 1 carrying the photocatalyst and the reaction solvent and other necessary materials for the photocatalytic hydrogen production reaction, and is placed in a place with sunlight. Since the reactor 1 has the top light window 2 and the side light window 3, the sunlight can be efficiently collected by the Fresnel lens, and is simultaneously focused and irradiated to the inside of the reactor 1 through the top light window 2 and the side light window 3, so that the solution in the reactor 1 is evenly heated, and the hydrogen is efficiently and stably produced. The gas can be automatically circulated through the gas inlet pipe 4, the gas outlet pipe 5 and the spherical connecting port 6, and the operation is simple and practical. The low-grade waste heat in the photocatalytic hydrogen production process can be efficiently converted into electric energy by wrapping the temperature difference power generation assembly 7 around the reactor 1, the structure is simple, no manual operation is needed, and only the solar energy is used to drive the device, so that the low-grade waste heat can be recovered through the temperature difference power generation principle while the hydrogen is produced, resources are saved, and the device is green and clean. The condenser pipe 8 is spirally and closely attached to the periphery of the temperature difference power generation assembly 7, so that the temperature difference of the two sides of the temperature difference power generation assembly 7 is increased, the device is suitable for use in the case of greater power generation demand, is convenient to install and disassemble, can be operated according to different conditions, the operation is simple, and the device is practical.

[0040] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features.

Claims

1. A fully solar driven hydrogen and electricity co-production device, characterized in that: The application relates to a thermoelectric generator module and a reactor, and relates to the technical field of thermoelectric generation.

2. A device for hydrogen and electricity co-production driven by full solar energy according to claim 1, characterized in that: The P-type semiconductor (72) and the N-type semiconductor (73) are alternately arranged and form an S-type series topology.

3. A device for hydrogen and electricity co-production driven by full solar energy according to claim 1, characterized in that: The top copper electrode (71) and the bottom copper electrode (75) are connected with the semiconductors through soldering.

4. A device for hydrogen and electricity co-production driven by full solar energy according to claim 1, characterized in that: The height of the thermoelectric generator module (7) is lower than the height of the air inlet pipe (4) and the air outlet pipe (5).

5. A device for hydrogen co-production with electricity driven by full solar energy according to claim 1, characterized in that: The top of the reactor (1) is connected with a top light window (2), and the side of the reactor (1) is connected with a side light window (3).

6. A device for hydrogen co-production with electricity driven by full solar energy according to claim 1, characterized in that: The terminal of the air inlet pipe (4) and the terminal of the air outlet pipe (5) are connected with spherical connecting ports (6).

7. A device for hydrogen co-production with electricity driven by full solar energy according to claim 6, characterized in that: The spherical connecting ports (6) are connected with an online micro-gas analysis system.

8. A device for hydrogen and electricity co-production driven by full solar energy according to claim 1, characterized in that: The periphery of the thermoelectric generator module (7) is surrounded by a condensate pipe (8), and the condensate pipe (8) is closely attached to the periphery of the thermoelectric generator module (7) in a spiral mode.

Images