An up-conversion system based on solar spectrum modulation

Abstract

The invention discloses an up-conversion system based on solar spectrum modulation, comprising a focusing modulation system, an aluminum oxide solid particle energy storage system and an optical transmission tube; the focusing modulation system comprises a full absorber, a selective emitter and a light reflecting fin, the full absorber is physically connected with the selective emitter, a TiN film is covered on the full absorber, which is a TiN-SiO2-TiN nanocomposite structure, the selective emitter has the same structure as the full absorber, the full absorber and the selective emitter are arranged above an optical transmission pipeline 6, and the light reflecting fins are tightly surrounded on both sides of the optical transmission tube; the aluminum oxide solid particle energy storage system comprises an energy storage bar and a magnetic bar, the energy storage bar is separated on both sides of the inner wall of the optical transmission tube and connected to the magnetic bar, a circuit is installed inside the magnetic bar, and the energy storage bar and the magnetic bar can be separated or closed, and the energy storage bar is filled with aluminum oxide solid particles; the optical transmission tube is a cylinder, the interior of which is evacuated to achieve the effect of lossless light passage, and the light emitted by the optical transmission tube is modulated short-wavelength light.

Description

Technical Field

[0001] The invention relates to the technical field of utilizing solar energy spectrum modulation, and in particular to an up-conversion system based on solar energy spectrum modulation. Background Art

[0002] Since the visible light range of sunlight is 400~760nm, it only accounts for 42% of the total light energy. Because there are many ultraviolet light with wavelengths between 200~400nm and infrared light greater than 760nm, which are difficult to be used by people, the utilization of solar energy has always been at a low level. Due to the huge energy demand and serious environmental damage in today's world, the efficient utilization of new energy is imminent. New energy is ultimately solar energy. How to make the utilization of sunlight efficient and environmentally friendly is a research hotspot in today's world.

[0003] In the field of photovoltaic cells, the light of the emitter should be maintained at a shorter wavelength to reduce heat dissipation; in the field of photocatalytic water electrolysis, photocatalytic materials that can fully decompose water in one step mostly only respond to ultraviolet light, and the proportion of ultraviolet light in sunlight is very small. Therefore, more complex technology or more expensive materials are needed for photocatalysis. The limitation of light wavelength has been gradually solved by spectral modulation technology. Spectral modulation uses absorbers and emitters to modulate the wavelength of light to a band where the material absorbs more, thereby achieving efficient use of light energy. Summary of the invention

[0004] In order to achieve up-conversion of light, the purpose of the present invention is to provide an up-conversion system based on solar energy spectrum modulation, which can achieve up-conversion of light wavelength using only solar energy without consuming other energy, and is environmentally friendly and efficient.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An up-conversion system based on solar spectrum modulation, the system comprising a light-concentrating modulation system, an aluminum oxide solid particle energy storage system and a light transmission tube 6;

[0007] The light-focusing modulation system comprises a full absorber 1, a selective emitter 2 and a light-reflecting fin 3, wherein the full absorber 1 and the selective emitter 2 are physically connected and arranged above the light transmission pipe 6, and the light-reflecting fin 3 is tightly surrounded on both sides of the light transmission pipe 6; the selective emitter 2 can absorb the light reflected by the light-reflecting fin 3 to increase the temperature, modulate and up-convert the light received from the full absorber 1, and can emit a high-energy light beam with a peak at the short-wave light according to the Wien displacement law;

[0008] The alumina solid particle energy storage system comprises an energy storage bar 5 and a magnetic bar 4. The energy storage bar 5 is arranged on the inner wall of the optical transmission tube 6 and is separated on both sides. The energy storage bar 5 is connected to the magnetic bar 4 fixed on the top of the optical transmission tube 6. The magnetic bar 4 is equipped with a circuit inside, which can separate or close the energy storage bar 5 and the magnetic bar 4. The magnetic bar 4 is fixed on the selective emitter 2. The energy storage bar 5 is equipped with alumina solid particles. When the light energy absorbed by the full absorber 1 is up-converted, part of the energy used to increase the temperature of the selective emitter 2 is provided by the light reflecting fin 3, and the other part is provided by the energy storage bar 5. When the light is sufficient, the light reflecting fin 3 reflects the light energy to the selective emitter 2 and the energy storage bar 5 respectively, and the alumina solid particles in the energy storage bar 5 absorb the energy and store it. When the light is insufficient, the internal circuit is connected, the magnetic bar 4 absorbs the energy storage bar 5, and the two are closed. The energy storage bar 5 provides the required energy to the selective emitter 2 through heat conduction to achieve continuous up-conversion of light energy.

[0009] The light transmission tube 6 is a cylinder, and the interior is evacuated to achieve the effect of lossless light transmission. The light emitted from the light transmission tube 6 is modulated short-wavelength light.

[0010] The total absorber 1 is a TiN-SiO2-TiN nanocomposite structure with a TiN film on top and a cylindrical array based on a second-order Cantor set model. It can absorb sunlight of all bands with an absorption efficiency of 0.94 and is insensitive to polarization angle.

[0011] The selective emitter 2 is a chromium nano-cylinder array, which is also based on a cylindrical array of the second-order Cantor set model, and can withstand high temperatures of 2200K. In addition, chromium can form an oxide film with excellent oxidation resistance.

[0012] The light reflecting fin 3 can be extended and retracted arbitrarily, and it surrounds the light transmission tube 6 and is connected to the extension and retraction control system inside the light transmission tube 6. The light reflecting fin 3 is a stepped structure, and is provided with a plurality of light reflecting mirrors whose focal points are located on the selective emitter 2. Since the energy storage bar 5 has a certain thickness and contains solid aluminum oxide particles, it will also absorb the energy from the light reflecting fin 3 and store it. The input size of light energy is guaranteed by adjusting the extension and retraction of the stepped light reflecting fin.

[0013] The energy storage bar 5 is made of aluminum oxide solid particles, the melting point of which is above 2000 and the thermal conductivity is 0.5 W·m -1 ·K -1 , the energy reflected by the light reflecting fin 3 can be stored and released when needed.

[0014] The magnetic strip 4 is connected to the circuit and connected to and separated from the energy storage strip 5 by the supply of electricity. The magnetic strip 4 is connected to and separated by strong light and closed by weak light, so as to realize the continuity of optical upconversion.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention adopts spectral modulation technology to up-convert sunlight, and can efficiently achieve up-conversion using only solar energy. The obtained high-energy short-wave light can be used for all necessary research, making full use of the principle of spectral modulation and achieving sustainable up-conversion, which is efficient, energy-saving and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the upconversion system based on solar spectrum modulation. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown, the present invention is an up-conversion system based on solar spectrum modulation, which includes a focusing modulation system, an aluminum oxide solid particle energy storage system and an optical transmission pipeline 6; the focusing modulation system includes a full absorber 1, a selective emitter 2 and a light reflecting fin 3, wherein the full absorber 1 is physically connected to the selective emitter 2, a TiN film is covered on the top of the full absorber, and it is a TiN-SiO2-TiN nanocomposite structure, the selective emitter 2 is the same shape as the full absorber 1, and the light reflecting fin 3 is connected to the full absorber 1 and the selective emitter 2 on the same optical The optical transmission tube is provided with a full absorber 1 and a selective emitter 2, wherein the full absorber 1 and the selective emitter 2 are arranged above the optical transmission tube 6, and the light reflecting fins 3 are tightly surrounded on both sides of the optical transmission tube 6; the alumina solid particle energy storage system comprises an energy storage bar 5 and a magnetic bar 4, the energy storage bar 5 is arranged on the inner wall of the optical transmission tube 6 and is separated on both sides, and is connected to the magnetic bar 4 fixed above the optical transmission tube 6, the magnetic bar 4 is internally provided with a circuit, and the energy storage bar 5 and the magnetic bar 4 can be separated or closed, and the energy storage bar 5 is provided with alumina solid particles, the melting point can reach above 2000K, and the thermal conductivity is 0.5W·m -1 ·K -1 The light transmission tube 6 is a cylinder, and the light reflecting fins 3 tightly surround both sides. The inside of the light transmission tube is evacuated to achieve the effect of lossless light transmission. The light emitted from the light transmission tube 6 is modulated short-wavelength light.

[0020] Example 1: One-step excitation for full water decomposition for electrolysis of water to produce hydrogen:

[0021] like Figure 1 Shown

[0022] Step 1, absorption of sunlight: the full absorber 1 absorbs sunlight of various wavelengths and transmits it to the selective emitter 2 below;

[0023] Step 2, up-conversion of light waves: After the selected emitter 2 receives the light from the full absorber 1, the light energy reflected by the light-absorbing reflective fin 3 is heated up, and the light energy received from the full absorber 1 is modulated and emitted. Since the selected emitter 2 is similar to a black body, it can emit light with the desired peak according to the Wien displacement law, thereby realizing up-conversion of light;

[0024] Step 3, storage and regulation of light energy: when up-converting the light energy of the total absorber 1, part of the energy used to increase the temperature of the selective emitter 2 is provided by the light reflecting fins 3, and the other part is provided by the energy storage bar 5. When there is sufficient light, the light reflecting fins 3 reflect the light energy to the selective emitter 2 and the energy storage bar 5 respectively, and the aluminum oxide solid particles in the energy storage bar absorb the energy and store it; when the light is insufficient, the internal circuit is connected, the magnetic bar 4 absorbs the energy storage bar 5 and the two are closed, and the energy storage bar 5 provides the required energy to the selective emitter 2 through heat conduction to achieve continuous up-conversion of light energy.

Claims

1. An up-conversion system based on solar spectrum modulation, characterized in that: The system comprises a light focusing modulation system, an aluminum oxide solid particle energy storage system and a light transmission tube (6); The light-focusing modulation system comprises a full absorber (1), a selective emitter (2) and a light-reflecting fin (3), wherein the full absorber (1) and the selective emitter (2) are physically connected and arranged above the light transmission tube (6), and the light-reflecting fin (3) is tightly surrounded on both sides of the light transmission tube (6); the selective emitter (2) can absorb the light energy reflected by the light-reflecting fin (3) to increase the temperature, modulate and up-convert the light received from the full absorber (1), and can emit a high-energy light beam with a peak at the short-wave light according to the Wien displacement law; The aluminum oxide solid particle energy storage system comprises an energy storage bar (5) and a magnetic bar (4). The energy storage bar (5) is arranged on the inner wall of the optical transmission tube (6) and is separated on both sides. The energy storage bar (5) is connected to the magnetic bar (4) fixed on the top of the optical transmission tube (6). The magnetic bar (4) is equipped with a circuit inside, which can separate or close the energy storage bar (5) and the magnetic bar (4). The magnetic bar (4) is fixed on the selective emitter (2). The energy storage bar (5) is equipped with aluminum oxide solid particles. When the light energy absorbed by the full absorber (1) is up-converted, it is used to increase the selective emitter. A part of the energy for the temperature of the emitter (2) is provided by the light reflecting fin (3), and the other part is provided by the energy storage bar (5). When the light is sufficient, the light reflecting fin (3) reflects the light energy to the selected emitter (2) and the energy storage bar (5) respectively, and the aluminum oxide solid particles in the energy storage bar (5) absorb the energy and store it; when the light is insufficient, the internal circuit is connected, the magnetic bar (4) absorbs the energy storage bar (5), and the two are closed. The energy storage bar (5) provides the energy required by the selected emitter (2) through heat conduction to achieve continuous up-conversion of light energy; The light transmission tube (6) is a cylinder, the interior of which is evacuated to achieve the effect of lossless light transmission. The light emitted from the light transmission tube (6) is modulated short-wavelength light.

2. The up-conversion system based on solar spectrum modulation according to claim 1, characterized in that: The total absorber (1) is a TiN-SiO2-TiN nanocomposite structure with a TiN film on top, and is a cylindrical array based on a second-order Cantor set model. It can absorb sunlight of all wavelengths, has an absorption efficiency of 0.94, and is insensitive to polarization angles.

3. The up-conversion system based on solar spectrum modulation according to claim 1, characterized in that: The selective emitter (2) is a chromium nano-cylinder array, which is also based on a cylinder array of a second-order Cantor set model, and is resistant to high temperatures of 2200K. In addition, chromium can form an oxide film, and has excellent oxidation resistance.

4. The up-conversion system based on solar spectrum modulation according to claim 1, characterized in that: The light reflecting fin (3) can be extended and retracted at will, and surrounds the light transmission tube (6) and is connected to the extension and retraction control system inside the light transmission tube (6). The light reflecting fin (3) is a stepped structure, and is provided with a plurality of light reflecting mirrors whose focal points are located on the selected emitter (2). Since the energy storage bar (5) has a certain thickness and contains solid aluminum oxide particles, it can also absorb energy from the light reflecting fin (3) and store it. The input size of light energy is guaranteed by adjusting the extension and retraction of the stepped light reflecting fin (3).

5. The up-conversion system based on solar spectrum modulation according to claim 1, characterized in that: The energy storage strip (5) is filled with aluminum oxide solid particles, the melting point of which is above 2000K and the thermal conductivity is 0.5W·m -1 ·K -1 , the energy reflected by the light reflecting fin (3) can be stored and released when needed.

6. The up-conversion system based on solar spectrum modulation according to claim 1, characterized in that: The magnetic strip (4) is connected to the circuit and connected to and separated from the energy storage strip (5) by the supply of electric power. The strips are separated when the light intensity is strong and closed when the light intensity is weak, thereby achieving the continuity of optical upconversion.

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