JPS6124621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar energy utilization device that collects and stores solar energy.

Conventional general solar energy utilization devices are
As shown in the figure, hot water obtained from a collector 12 flowing through a water circulation pipe 10 is guided to a hot water storage tank 14 for heat storage. This hot water storage tank 14 is provided with a heater 16, which heats the hot water as required and then sends it to the hot water supply section 18.

However, in such a solar energy utilization device, since the heat storage material is water, a large amount of heat is radiated from the hot water storage tank 14, making it impossible to store heat for a long time. In addition, this solar energy utilization device can collect light energy in the long wavelength range of sunlight relatively efficiently, but light energy in the short wavelength range (0.17 to 0.35 μm) is not collected very efficiently. There is also limited efficiency in the heat collecting section.

The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain a solar energy utilization device that can utilize light energy over a wider wavelength range of sunlight.

The solar energy utilization device according to the present invention mainly includes a solar collector that circulates a heat absorbing and dissipating material such as water that collects light energy in a long wavelength region, and a highly strainable compound that changes into a highly strained compound by the light energy of short wavelength light. A light energy storage compound circulating solar collector and a splitting means for irradiating short wavelength light of the sunlight mainly to the light energy storage compound circulating solar collector and long wavelength light mainly to the heat absorbing and dissipating material circulating solar collector. By separating sunlight into wavelengths, light energy is collected over a wider wavelength range, and both the heat absorbing and dissipating material and the high distortion compound from these collectors are guided to a heat absorbing and dissipating material storage container such as a hot water tank. At the same time, the storage container is equipped with a catalyst that causes a thermal reaction by converting a high strain compound into a highly strainable compound, so that the heat absorption and radiation material in the storage container can be heated with the light energy storage compound.

Note that the heat absorbing/radiating material from the collector may be directly supplied to the heat absorbing/radiating material storage container, or may be supplied to a heat radiating coil in the heat absorbing/radiating material storage container, and heat exchanged with water etc. via this heat radiating coil. .

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, in the solar energy utilization device according to this embodiment, a solar collector 20 is communicated with a hot water storage tank 22, which is a heat absorbing and dissipating material storage container, through a plurality of pipes. This solar light collector 20 has a water circulation solar collector section 24 as a heat absorption/dissipation material circulation solar collector section and a light energy storage compound circulation solar collector section 26. (Hereinafter, they will be referred to as a water circulation collector section and a compound circulation collector section, respectively.) Although various shapes can be considered for the solar light collector 20, a specific structure shown in FIG. 3 is used as an example in this embodiment. To explain this structure in detail, a vertical shaft 30 is supported by a fixed base 28 installed on the roof of a structure (not shown).
A horizontal rotation frame 32 is fixedly attached to the frame 32 so that it can rotate together with a vertical axis. A horizontal shaft 36 is pivotally supported by a pair of brackets 34 erected from the horizontal swing frame 32, and a vertical swing frame 38 is fixed to the horizontal shaft 36 so as to be able to swing together with the horizontal shaft.

The vertically rotating frame 38 is box-shaped and has a transparent Fresnel prism 40 as a beam splitting means on the ceiling, and a plurality of circulation pipes 42 and 44 are provided in the condensing part of the Fresnel prism 40. Here, the circulation pipe 42 is connected to the water circulation collector section 24 in FIG.
The circulation pipes 44 each correspond to the compound circulation collector section 26 in FIG. This circulation pipe 44 is provided approximately at the center of the light collecting section, and circulation pipes 42 are arranged on both sides of this circulation pipe 44.
Water is circulated through the circulation pipe 42 and light energy storage compound is circulated through the circulation pipe 44. The circulation pipe 42 may be a double pipe if necessary,
Water can be circulated within the inner tube to create a vacuum between the inner and outer tubes.

These two types of circulation pipes 42 and 44 are irradiated with sunlight that has passed through the Fresnel prism 40, but since sunlight has a different refractive index depending on the wavelength of the light component, light of different wavelengths is transmitted to the circulation pipes 42 and 44. 44. In other words, sunlight passes through the Fresnel prism 40, is refracted, and then splits into a spectrum, so the circulation pipe 4, which is a photoreceptor that matches the wavelength range, is placed above the band-shaped portion of this dispersion spectrum.
2, 44 are arranged, the circulation pipe 44 receives short wavelength light that is relatively largely refracted by the Fresnel prism 40, and the water circulation pipe 42 receives long wavelength light that is not relatively significantly refracted. There is. As a result, the sunlight collector 20 is able to efficiently collect sunlight into spectra using the Fresnel prism 40 and collect light energy in the entire wavelength range.

Note that the vertical axis 30 and horizontal axis 3 shown in FIG.
Reference numeral 6 is rotated by a drive device (not shown) so that the sunlight collector 20 can always track sunlight, and a sunlight position sensor, a sunlight position storage device, etc. can be used as this tracking control means.

In this embodiment, norbornadiene (hereinafter referred to as N-form) shown in FIG. 4 is used as the optical energy storage compound flowing through the circulation pipe 44. This N-form is a highly strainable compound that has fluidity at room temperature, and when irradiated with short wavelength light in the ultraviolet region, it changes into a highly strained compound quadricyclene (hereinafter referred to as Q-form) through a photoisomerization reaction. When this Q form is passed through a catalyst (cobalt tetraphenyl polyphylline complex or cobalt phthalocyanine complex), a catalytic thermal reaction occurs and N
It has the property of returning to its physical state. At this time 22KCal/
It is accompanied by heat generation of about Mol=240Cal/g. Therefore, it is possible to mainly accumulate short wavelength light of sunlight and release it as thermal energy as necessary.

Based on Figure 2, the solar collector 20 and the hot water storage tank 2
The piping between 2 and 2 will be explained. Water circulation collector part 2
4 is connected via piping 46 on the downstream side and through piping 5 on the upstream side.
0 to the vicinity of the lower end of the hot water tank 22. A pump 52 is provided in the middle of the pipe 50 to send hot water heated by the water circulation collector section 24 to the hot water tank 22.

On the other hand, one end of the compound circulation collector section 26 is connected to the pipe 5
6 and communicates with pipes 60 and 62 by a three-way valve 58. The piping 62 is connected to the upstream end of a heating coil 68 in the hot water tank 22 via a Q body storage tank 64 and a pump 66. The downstream end of this heating coil 68 is connected to a pipe 69, an N body storage tank 70 and a three-way valve 7.
It communicates with piping 60 and 74 via 2.
A catalyst 76 (a cobalt phthalocyanine complex is used in this embodiment) is provided at the upstream end of the heating coil 68 in the hot water storage tank 22, and the piping 62
It is designed to cause a photoisomerization reaction to the Q form from. This heating coil 68 is connected to the piping 46, 50
The hot water storage tank 22 is disposed above the communication portion.

Further, a pipe 74 connected to the three-way valve 72 is communicated with the other end of the compound circulation collector section 26 via a pump 78, and forms a circulation path to the circulation pipe 44 together with the pipes 56 and 60. In FIG. 2, in the piping between the solar collector 20 and the hot water storage tank 22, the broken line shows the Q body, the solid line shows the N body, and the dashed line shows the hot water flow path.

Further, a water supply pipe 80 is connected to the lower part of the hot water storage tank 22 to send water from a water supply source (not shown) to the pipe 50 through the lower part of the hot water tank 22, and a hot water supply pipe 82 is connected to the upper part to heat the water. The subsequent hot water is sent to a hot water supply section 84 and a heating device, a cooling device, etc. (not shown). The water supply pipe 80 can also communicate directly with the pipe 50 without going through the hot water tank 22. Further, a heater can be provided in the hot water tank 22 as necessary.

Next, the operation of this embodiment will be explained.

Water from the water supply pipe 80 is sent to the solar collector 20 through the pipe 50, heated by irradiation with mainly long-wavelength sunlight, and then injected into the hot water storage tank 22 through the pipe 46. This hot water can be recirculated to the piping 50 and the solar corctor 20 as needed to obtain high-temperature water.

On the other hand, the compound circulation collector section 26 receives short wavelength light of sunlight and converts the light energy storage compound into the Q form, but circulates and transports the N form in order to store sufficient light energy. That is, the three-way valve 58,
By switching 72, the pipes 56, 60, and 74 are connected to form a circulation path, and the pump 78 is driven to flow the N-isomer into the circulation pipe 44 multiple times to cause a sufficient photoisomerization reaction.

Thereafter, when the three-way valve 58 is switched to connect the pipes 56 and 62, the Q body, which has become a highly strained compound, is stored in the Q body storage tank 64. Since the Q body in the Q body storage tank 64 does not return to the N body by itself, there is no heat loss, and no heat insulating material is required, making it possible to store energy for a long period of time.

When necessary, the Q body in the Q body storage tank 64 is pumped to the pump 66.
is sent to the heating coil 68 in the hot water storage tank 22. At the inlet of this heating coil 68, a catalyst 76
When it comes into contact with the water, a catalytic thermal reaction occurs and the water returns to its original N form, generates heat, and exchanges heat with the hot water in the hot water storage tank 22 while flowing through the heating coil 68, so that the hot water in the hot water storage tank 22 is further heated. . Therefore, the hot water supply unit 84 from the hot water storage tank 22 can take out not only hot water heated by the water circulation solar collector 24 but also hot water heated by the heating coil 68 and heated to a high temperature if necessary, and can be used in a wide range of areas. It can be used for hot water supply, air conditioning and heating.

The light energy storage compound that has been restored to N-body in the heating coil 68 is accumulated in the N-body storage tank 70 through piping 69, and is returned to circulation pipe 44 through piping 74 by switching the three-way valve 72 as necessary. .

Although norbornadiene was used as the light energy storage compound in the above embodiment, the present invention can be applied to any fluid light energy storage compound that can repeatedly absorb light energy and release thermal energy through a reversible photoisomeric pseudoreaction. As applicable, other compounds such as azepines can also be used. When this azepine receives short wavelength light, it changes into a strained compound, dichlorobutenodihydrovyrol, and in the presence of a catalyst, it reverts back to azepine, a highly strainable compound, and is accompanied by heat generation. Additionally, in the present invention, the light energy storage compound can be used in the form of a slurry, and any form of fluidity can be applied.

Although water was used as the heat absorbing and dissipating material in the above embodiments, it is not limited to pure water, and may contain appropriate additives such as rust preventives and antifreeze agents. In addition to water, the heat absorbing and dissipating material may be any material that absorbs and releases sunlight energy as heat energy, and may be glycols, hydrocarbons, halogenated hydrocarbons, or the like.

In the above embodiment, Q body storage tank 64, N body storage tank 7
Although long-term storage of energy is possible by using 0, the present invention is not limited to a storage tank, and any storage means that can substantially store the light energy compound may be used.

Note that in the above-mentioned ribbon embodiment, hot water from the water circulation solar collector was directly supplied into the hot water storage tank 22, but a discharge coil is provided in the hot water storage tank 22, hot water is guided into this discharge coil, and the water in the piping 50 and Naturally, heat may be exchanged indirectly with the water in the pipe 80.

As explained above, the energy utilization device according to the present invention irradiates sunlight to the light energy storage compound circulating solar collector and the heat absorbing/radiating material circulating solar collector through the splitting means, thereby transmitting sunlight over a wide wavelength range. , the heat absorbing and dissipating material from the solar collector is supplied to the heat absorbing and dissipating material storage container, and the highly strained compound from the photovoltaic energy storage compound circulating solar collector is supplied to the heat generating coil in the heat absorbing and discharging material storage container. Since it causes a catalytic thermal reaction with the catalyst provided in the heating coil, it has the excellent effect of effectively utilizing the light energy in the entire wavelength range of sunlight.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing a conventional solar energy utilization device, FIG. 2 is a system diagram showing an embodiment of the solar energy utilization device of the present invention, FIG. 3 is a partially cutaway perspective view showing a solar collector, and FIG. FIG. 4 is a chemical reaction formula showing the optical energy storage compound used in this example. 20... Solar collector, 22... Hot water storage tank, 2
4... Water circulation solar collector section, 26... Light energy compound circulation solar collector section, 42, 44...
...Circulation pipe, 64...Q body storage tank, 68...Heating coil, 70...N body storage tank, 76...Catalyst.

Claims (1)

[Scope of Claims] 1. A heat absorbing/radiating material circulation solar collector that heats a fluid heat absorbing/radiating material that can repeatedly absorb and release thermal energy with sunlight, and converting a highly strainable compound into a highly strained compound with sunlight. a light energy storage compound circulating solar collector that changes the light energy storage compound; and a splitter that mainly irradiates the short wavelength light of the sunlight to the light energy storage compound circulating solar collector and irradiates the long wavelength light mainly to the heat absorbing material circulating solar collector. and a heat absorbing/radiating material that is communicated with the heat absorbing/radiating material circulation solar collector to supply the heated heat absorbing/radiating material, and the heat absorbing/radiating material is directly supplied and stored inside the heat absorbing/radiating material or is supplied to a built-in heat radiating coil. a storage container, and a catalyst that is built into the heat absorbing and dissipating material storage container and communicates with the light energy storage compound circulation solar collector, and that contacts the high strain compound to cause a thermal reaction that converts it into a high strain capable compound. A solar energy utilization device having a coil. 2. The solar energy utilization device according to claim 1, wherein the demultiplexing means is a Fresnel prism. 3. A heat absorbing/radiating material circulation solar collector that uses sunlight to heat a fluid heat absorbing/radiating material that can repeatedly absorb and release thermal energy, and a light energy storage compound that changes a highly strainable compound into a highly strained compound using sunlight. a circulating solar collector; a splitting means for mainly irradiating short-wavelength light of sunlight to the light energy storage compound circulating solar collector and irradiating long-wavelength light mainly to the heat absorbing and dissipating material circulating solar collector; A heat absorbing and dissipating material storage device that is connected to the material circulation solar collector and is supplied with the heat absorbing and dissipating material after heating, and this heat absorbing and dissipating material is directly supplied and stored therein or is supplied to a built-in heat dissipating coil; A heating coil that is built into the heat dissipation material storage container and is provided with a catalyst that causes a thermal reaction that contacts the highly strained compound to convert it into a highly strainable compound, and an upstream side of the heating coil and the light energy storage compound circulation solar collector. and a highly strainable compound storage means interposed between the downstream side of the heating coil and the light energy storage compound circulation solar collector. Device. 4. The solar energy utilization device according to claim 3, wherein the high strain compound storage means and the high strain capable compound storage means are a high strain compound storage tank and a high strain capable compound storage tank, respectively. . 5. The solar energy utilization device according to claim 3, wherein the demultiplexing means is a Fresnel prism.