KR20240114389A - Solar panel with passive cooling device - Google Patents

Abstract

A solar panel including a passive cooling device according to an embodiment of the present invention includes a photovoltaic cell; and an adsorption layer provided on the rear side of the photovoltaic cell, capable of adsorbing and desorbing carbon dioxide.
According to an embodiment of the present invention, the initial construction cost is low, maintenance is not required, there is no energy consumption in operation, and the economic efficiency is high due to mass production of the adsorbent, and the panel has excellent cooling performance due to the radiant heat of the solar panel. Not only can the temperature rise be lowered, extending the life of solar panels, but it can also reduce the building's cooling and heating load by removing indoor carbon dioxide.

Description

Solar panel with passive cooling device {SOLAR PANEL WITH PASSIVE COOLING DEVICE}

The present invention relates to a solar panel comprising a passive cooling device.

The building sector accounts for the largest proportion of total energy consumption, at 30-50%, and carbon dioxide emissions are correspondingly dominant. Zero energy buildings have been developed to improve energy consumption patterns in the building sector, and produce renewable energy to cover part of the building's energy load.

Among renewable energy sources, the most widely used in buildings is solar energy, which is harvested in the form of electricity using photovoltaic cells (PV cells). Most photovoltaic cells are sensitive to temperature, and their efficiency decreases rapidly when the temperature rises due to radiant heat.

Cooling devices have been developed to maintain a constant temperature and achieve stable power generation. Representative examples include natural convection of air, forced convection of air, liquid cooling, phase change material (PCM), heat pipe, and thermoelectric cooling. there is.

First, natural air convection refers to the cooling effect caused by the flow of air due to the density difference when the temperature of the panel rises. There is no energy consumed for cooling, but the cooling effect is minimal.

Forced air convection circulates air using fans, etc., and although it consumes energy to supply driving force, it has a better cooling effect than natural convection. However, it has the disadvantage of being sensitive to external temperature.

In addition, liquid cooling cools the PV panel by circulating liquid, and has the best cooling performance, but consumes a lot of energy and is low in economic efficiency.

Additionally, the phase change material is a method of attaching a material that changes phase at a certain temperature to the PV panel and preventing the temperature of the panel from rising because radiant heat is consumed for the phase change. The material is expensive and has problems such as toxicity, corrosiveness, and flammability.

In addition, heat pipes transfer latent heat through convection of refrigerant within the heat pipe when heated. Although they are inexpensive, they have the disadvantage of low heat transfer performance and being greatly affected by external air conditions.

Additionally, thermoelectric cooling operates on the principle that a temperature difference occurs when electricity is supplied, and is not commercialized due to the high construction costs and energy consumption.

To improve the efficiency of solar panels, a cooling unit must be used in combination. However, the above-mentioned conventional cooling technology has the disadvantage of not being able to remove heat efficiently (natural convection of air, heat pipe) or having low economic efficiency (forced air convection, liquid cooling, phase change material, thermoelectric cooling).

Republic of Korea registered patent 10-2225804 U.S. published patent 2022-0090869 Republic of Korea Open Patent 10-2022-0042540 Republic of Korea registered patent 10-2032240

The present invention has a low initial construction cost, does not require maintenance, has no energy consumption in operation, is highly economical due to mass production of adsorbents, and has excellent cooling performance, so it can reduce the increase in panel temperature caused by radiant heat from solar panels. The purpose of the present invention is to provide a solar panel that includes a passive cooling device that not only extends the life of the solar panel, but also reduces the building cooling and heating load by removing indoor carbon dioxide.

Meanwhile, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

A solar panel including a passive cooling device according to an embodiment of the present invention includes a photovoltaic cell; and an adsorption layer provided on the rear side of the photovoltaic cell, capable of adsorbing and desorbing carbon dioxide.

Additionally, the adsorption layer is an adsorbent of at least one of mesoporous silica, zeolite, and metal organic framework, or includes a combination thereof.

In addition, the mesoporous silica includes any one of SiO ₂ , SBA-15, and MCM-41, or a combination thereof, and the zeolite includes zeolite 13X, zeolite 5A, zeolite 3A, SAPO-34, and SSZ-14. It includes any one of or a combination thereof, and the metal-organic framework includes MOF-5, MOF-74, MOF-99, MOF-177, MOF-235, MOF-253, IRMOF-1, and IFMOF-16. , UIO-66, UIO-67, UiO-68, MIL-53, MIL-88, MIL-100, MIL-101, LIC-1, ZIF-8, ZIF-90, Fe-BTC and Cu-BTC It may be one or a combination thereof.

In addition, the adsorption layer further includes an amine-functionalized material, and the amine-functionalized material includes polyethylenimine (PEI), tetraethylene pentamine (TEPA), ℃tadecyltrimethoxysilane (ODTMS), (3-Aminopropyl)trimethoxysilane (1-APTES), 3-(2-aminoethylamino)propyltrimethoxysilane (2-APTES), 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane (3-APTES), monoethanolamine (MEA), Diethanolamine(DEA), Triethanolamine(TEA), methyl diethanolamine (MDEA), aminoethyl ethanolamine (AEEA), and diethylenetriamine (DETA), or a combination thereof.

Additionally, the adsorption layer is coated by spraying the adsorbent using a supersonic nozzle.

Additionally, the adsorption layer is provided inside a building corresponding to the photovoltaic cell, enabling the capture of carbon dioxide indoors in the building.

In addition, it further includes a circulation fan provided in the adsorption layer to circulate indoor air.

In addition, it further includes a circulation duct provided along the adsorption layer and allowing indoor air to circulate in one direction by the circulation fan.

According to an embodiment of the present invention, the initial construction cost is low, maintenance is not required, there is no energy consumption in operation, and the economic efficiency is high due to mass production of the adsorbent, and the panel has excellent cooling performance due to the radiant heat of the solar panel. Not only can the temperature rise be lowered, extending the life of solar panels, but it can also reduce the building's cooling and heating load by removing indoor carbon dioxide.

Meanwhile, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

Figure 1 is an exemplary side view showing a solar panel including a passive cooling device according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing the state in which carbon dioxide is adsorbed and desorbed on a solar panel including a passive cooling device according to an embodiment of the present invention.
Figure 3 is a graph showing the results according to Experimental Example 1.
Figure 4 is a graph showing the results according to Experimental Example 2.
Figures 5 to 7 are graphs showing the results according to Experimental Example 3.
Figure 8 is a scanning electron microscope image showing the results according to Experimental Example 4.
Figure 9 is a graph showing the results according to Experimental Example 5.
Figure 10 is a schematic diagram showing natural ventilation (NV), heat recovery ventilation system (ERV), and ventilation method according to Example 3 (CAS).
Figure 11 is a graph showing indoor energy load according to the ventilation method of Figure 10.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This example is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of elements in the drawings are exaggerated to emphasize clearer explanation.

The configuration of the invention to clarify the solution to the problem to be solved by the present invention will be described in detail with reference to the accompanying drawings based on preferred embodiments of the present invention, and the reference numbers to the components in the drawings will be the same. Components are given the same reference numbers even if they are in different drawings, and it is stated in advance that components of other drawings can be cited when necessary when explaining the relevant drawings.

Referring to FIG. 1, a solar panel including a passive cooling device according to an embodiment of the present invention may include an adsorption layer 10.

The adsorption layer 10 may be a layer coated with an adsorption layer 10 capable of adsorption and desorption of carbon dioxide on the back side of a photovoltaic (PV) cell.

Here, photovoltaic cells can be used in a building integrated photovoltaic (BIPV) system.

In other words, the exterior of a building, such as its windows, walls, balconies, and roofing materials, can be used as photovoltaic cells. At this time, the front side of the photovoltaic cell may be provided to face the outdoor side, and the rear side of the photocell may be provided to face the indoor side.

For example, the passive cooling device of the present invention may be provided on the rear side of a photovoltaic cell used in BIPV, that is, on the rear electrode of the photovoltaic cell. Additionally, the solar panel including the passive cooling device of the present invention can be installed indoors in a building and can collect carbon dioxide indoors in the building. At this time, the photovoltaic cell may be installed outside the building.

This will be explained in detail.

First, an adsorption layer 10 coated with an adsorbent capable of adsorbing and desorbing carbon dioxide is formed on the rear side of the photovoltaic cell. At this time, the adsorption layer 10 can be coated by spraying the adsorbent with a supersonic nozzle. Specifically, it can be coated and formed under 4 bar conditions at 120°C using a supersonic cold spray coating method.

In addition, the adsorption layer 10 may be formed using pelletizing, coating using a binder such as PVA, etc. in addition to supersonic flow coating technology.

Referring to (a) of FIG. 2, the adsorption layer 10 is saturated with all carbon dioxide adsorbed. When solar energy is supplied to photovoltaic cells during the day, electricity is produced through the photoelectric effect and the temperature rises due to radiant heat. Continuous thermal energy is not consumed to increase the temperature of the photovoltaic cell, but is consumed as latent heat to desorb carbon dioxide from the adsorption layer 10. In other words, a cooling effect occurs.

Referring to (b) of Figure 2, when solar energy supply is stopped at night, the temperature of the photovoltaic cell decreases to 20-25°C. At this time, in the case of a building-integrated solar panel, thermal equilibrium with the indoor temperature is reached. And, during the day, all carbon dioxide is desorbed from the adsorption layer 10. And carbon dioxide generated by people indoors is adsorbed by the adsorption layer 10. In other words, ventilation can be minimized by removing indoor carbon dioxide, thereby minimizing the cooling and heating load consumed in the building.

As described above, the adsorbent that forms the adsorption layer 10 may be at least one of mesoporous silica, zeolite, and metal-organic framework, or may include a combination thereof.

Here, the mesoporous silica may include any one of SiO ₂ , SBA-15, and MCM-41, or a combination thereof.

Additionally, the zeolite may include any one of zeolite 13X, zeolite 5A, zeolite 3A, SAPO-34, and SSZ-14, or a combination thereof.

And, the metal-organic framework is MOF-5, MOF-74, MOF-99, MOF-177, MOF-235, MOF-253, IRMOF-1, IFMOF-16, UIO-66, UIO-67, UiO- 68, MIL-53, MIL-88, MIL-100, MIL-101, LIC-1, ZIF-8, ZIF-90, Fe-BTC, and Cu-BTC, or may include a combination thereof. .

Meanwhile, the adsorption layer 10 may further include an amine-functionalized material.

When amine functionalization is performed, the performance of the adsorption layer 10, that is, the adsorption of carbon dioxide, can be improved.

At this time, the amine-functionalized material is polyethylenimine (PEI), tetraethylene pentamine (TEPA), ℃tadecyltrimethoxysilane (ODTMS), (3-Aminopropyl)trimethoxysilane (1-APTES), 3-(2-aminoethylamino)propyltrimethoxysilane (2-APTES), 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane (3-APTES), monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), methyl diethanolamine (MDEA), aminoethyl ethanolamine (AEEA) and diethylenetriamine (DETA) It may include any one of these, or a combination thereof.

Meanwhile, referring to Figures 2(b) and 10 together, the solar panel passive cooling device of the present invention may further include a circulation fan 20 and a circulation duct 30.

The circulation fan 20 is provided in the adsorption layer 10 and can circulate indoor air.

In addition, the circulation duct 30 is provided along the adsorption layer 10, and can allow indoor air to circulate in one direction by the circulation fan 20.

At this time, the circulation fan 20 may be provided between the adsorption layer 10 and the circulation duct 30.

For example, at night, carbon dioxide is naturally generated by people living indoors and solar power generation is not generated. Also, during the day, carbon dioxide captured in the adsorption layer 10 is desorbed due to solar power generation.

Here, the circulation fan 20 can be operated at night to circulate indoor air from one side of the circulation duct 30 to the other side. At this time, the indoor air flowing into the circulation duct 30 contains carbon dioxide, and this carbon dioxide circulates along the circulation duct 30 and can be collected by the adsorption layer 10. In other words, by capturing carbon dioxide contained in indoor air, indoor ventilation can be minimized, thereby minimizing heating and cooling load loss, and additional energy can be produced through photovoltaic cells through heat exchange by capturing carbon dioxide in the adsorption layer 10. It may be possible.

On the other hand, during the day, the circulation fan 20 can be stopped and indoor ventilation can be performed using windows or a heat recovery ventilation system provided in the building. That is, the indoor carbon dioxide concentration may increase during the day due to the desorption of carbon dioxide collected in the adsorption layer 10 during the night and the generation of carbon dioxide by people living indoors.

Hereinafter, examples and experimental examples according to solar panels including the passive cooling device of the present invention will be described.

[Example 1]

Example 1 produced a powder adsorbent impregnated with an amine-functionalized material.

First, mesoporous silica, SiO ₂ , SBA-15, and MCM-41 were prepared.

And, microporous metal-organic frameworks were prepared from Fe-BTC, Cu-BTC, MIL-53, and ZIF-8.

In order to perform amine functionalization on the adsorbent, the amine functionalizing material of Polyethylenimine (PEI) with MW 1200 was stirred to produce PEI/SiO ₂ , PEI/SBA-15, PEI/MCM-41, PEI/Fe-BTC, and PEI/Cu-BTC. was prepared for each prepared adsorbent.

An amine-functionalized adsorbent to perform amine functionalization was prepared as follows.

First, 5 g of adsorbent was added to 300 mL of methanol, followed by stirring and ultrasonic pulverization for 2 hours to disperse the particles.

Then, PEI was added to obtain [Equation 1], and stirred for 24 hours. Next, impurities were removed through centrifugation four times using toluene, ethanol, and methanol.

Additionally, the solvent was evaporated by maintaining it at 50°C for 5 hours in a convection oven, and then maintained at 90°C and vacuum conditions in a vacuum oven for 24 hours.

In this way, an amine-functionalized adsorbent mixed with amine-functionalized materials was prepared.

[Example 2]

Example 2 is [DMF; 2 wt% of PEI/MCM-41 was dispersed in [N N-Dimethylformamide]. At this time, ultrasonic pulverization and stirring were performed for 3 hours.

Then, 1 wt% PAN was dispersed in the colloid, placed in the syringe of a syringe pump, and connected to a supersonic nozzle. A film-like adsorption layer 10 was formed by spraying on the side of the lower electrode of the photovoltaic cell prepared in advance at 120°C and 4 bar. In addition, after the adsorption layer 10 was formed, it was pretreated under vacuum conditions at 70°C.

[Example 3]

As in Example 2 described above, a building integrated photovoltaic (BIPV) system was implemented by equipping a building with photovoltaic cells with an adsorption layer 10 formed thereon. At this time, the adsorption layer 10 is located on the indoor side.

And, the photovoltaic cell conditions of Example 3 are 1.69 m wide, 0.99 m long, 35 mm high, and 1.6731 m2 in area, and consist of a 320W solar module.

In addition, Example 3 includes a circulation duct 30 and a circulation fan 20 between the circulation duct 30 and the adsorption layer 10 so that indoor air can be introduced and discharged along the adsorption layer 10. It was equipped.

[Comparative Example 1]

Comparative Example 1 is SiO ₂ , SBA-15, MCM-41, Fe-BTC, Cu-BTC, MIL-53, and ZIF-8 used to prepare the amine-functionalized adsorbent of Example 1 described above.

[Experimental Example 1 - Evaluation of carbon dioxide capture performance of adsorbent]

Experimental Example 1 evaluated the carbon dioxide capture performance of the adsorbents of Example 1 and Comparative Example 1.

First, 10 mg of each adsorbent of Example 1 and Comparative Example 1 was placed in an open pan of a TGA (thermogravimetric analyzer). Here, an open pan refers to a pan configured to test adsorption while flowing a reaction gas.

After maintaining at 25°C for 3 minutes, the temperature was raised from 25°C to 120°C. At this time, the temperature increase rate was 10°C/min. Impurities were desorbed from the adsorbent by maintaining the temperature at 120°C for 3 hours and injecting N ₂ gas at a flow rate of 100 ml/min.

Then, 100 ml/min of N ₂ gas was injected while lowering the temperature from 120°C to 25°C at 10°C/min, and maintained at 25°C for 10 minutes.

Next, 2,000 ppm of CO ₂ and air were flowed at 25°C for 6 hours to measure the change in mass of the adsorbent. At this time, the changed mass is equal to the CO ₂ adsorption amount.

The results of Experimental Example 1 are shown in Figure 3.

Referring to Figure 3, mesoporous silica SBA-15 and MCM-41 impregnated with PEI were shown to have higher carbon dioxide capture performance than Comparative Example 1, at 1.76 mmol/g and 1.68 mmol/g, respectively.

[Experimental Example 2 - Adsorbent cooling performance evaluation]

The heat flow curve required to raise each adsorbent from 25°C to 80°C in Example 1 and Comparative Example 1 in a sealed pan, the heat flow curve required to raise sapphire (pan material) from 25°C to 80°C in a sealed pan, and the sealing The heat flow curves required to increase the temperature from 25℃ to 80℃ of the fan itself were obtained. At this time, the weight of the sealed pan is the same. Here, a sealed fan refers to a fan configured to block contact with external gases such as oxygen.

The heat flow curve was calculated through [Equation 2] and [Equation 3] above.

Here, the heat flow curve can use a differential scanning calorimeter (DSC).

The specific heat of sapphire is already known, so the heat flow curve and specific heat of sapphire were corrected to obtain the specific heat of each adsorbent in Example 1 and Comparative Example 1.

In addition, the cooling effect of sensible heat change due to temperature increase was calculated using Equation 4 below.

Heating conditions from 25°C to 70°C were calculated using [Equation 5] in the TGA equipment.

In this process, the specific heat of each adsorbent in Example 1 and Comparative Example 1 was subtracted to calculate the latent heat required to desorb CO ₂ .

Finally, the cooling energy density was calculated as the sum of latent heat and sensible heat consumed in the 25~70℃ range, which is the temperature rise range of the PV cell.

As a result, the cooling energy density of each adsorbent in Example 1 and Comparative Example 1 according to the temperature increase was shown in FIG. 4.

Considering that the latent cooling density of general phase change materials is 100 to 250 J/g, it can be judged that the powder adsorbent of Example 1 shows a sufficient cooling effect. In particular, PEI/MCM-41 had a latent heat cooling density of 242.2 J/g, which was the highest compared to other powder adsorbents.

[Experimental Example 3 - Adsorbent durability evaluation 1]

Experimental Example 3 tested the mass change for PEI/SiO ₂ , PEI/SBA-15, and PEI/MCM-41 of Example 1, and Fe-BTC and Cu-BTC of Comparative Example 1.

When maintained at each relative humidity (x-axis in Figure 5) for 3 hours and 30 minutes, the change in mass was measured. At this time, TGA can be used to determine the mass change.

Referring to Figure 5, PEI/SiO ₂ , PEI/SBA-15, and PEI/MCM-41 were found to have high moisture resistance. In other words, it can be confirmed that the structure is stably maintained from moisture in the atmosphere.

[Experimental Example 3 - Adsorbent durability evaluation 2]

In Experimental Example 3, adsorption and desorption were repeated for PEI/MCM-41 of Example 1, but adsorption was performed under the same conditions as Experimental Example 1 described above, and durability was confirmed by repeating a total of 5 times. At this time, desorption was performed at 70°C. This means that the highest temperature rise of the photovoltaic cell can be expected to be around 70°C.

Referring to Figure 6, it can be seen that the heat flow curve, adsorption and desorption, and mass change are maintained upon repetition.

[Experimental Example 3 - Adsorbent durability evaluation 3]

Experimental Example 3 tested the thermal stability of PEI/MCM-41 of Example 1.

Referring to FIG. 7, as a result of observing structural changes due to repeated temperature changes of 20 to 100°C, durability can be confirmed because the heat flow curve according to repetitions was kept constant. Conversely, if decomposition occurred in repeated experiments, it can be confirmed that it is not durable as the heat flow curve changes.

[Experimental Example 4]

In Experimental Example 4, the structural shape and components of Examples 1 and 2 were confirmed.

The structural shape was confirmed by scanning electron microscope (SEM) images, and the components were analyzed by EDS (Energy Dispersive Spectroscopy). Since EDS is simply an analysis method that detects surface components, it is relatively distributed on the surface and confirms changes in N with high reliability.

Referring to FIG. 8, it can be confirmed that Examples 1 and 2, that is, the powder adsorbent (powder) and the adsorption layer (film), show almost no structural change in the SEM image, and it can be confirmed that N increases in the components. .

[Experimental Example 5]

Experimental Example 5 compared the carbon dioxide adsorption performance of Example 1 and Example 2.

Referring to Figure 9, it can be seen that the powder adsorbent (powder) of Example 1 and the adsorption layer (film) of Example 2 showed no change in carbon dioxide adsorption performance. At this time, PEI/MCM-41 was used as the adsorbent.

[Experimental Example 6]

Experimental Example 6 compared energy load according to ventilation method. There are three ventilation methods.

First, as shown in FIG. 10, it consists of natural ventilation (NV), an energy recovery ventilator (ERV), and Example 3 (CAS, CO ₂ Adsorption System).

At this time, natural ventilation is performed at 0.5 times per hour, and the heat recovery ventilation system is ventilated at 0.5 times per hour and at a wind volume of 93.15 CMH. Additionally, in Example 3, carbon dioxide is adsorbed in a sealed state.

The conditions are as shown in the tables below.

division x(horizontal) y(vertical) h(height) A (area) V (volume) value 9m 9m 2.3m 81㎠ 186.3㎤

[Table 1] shows the values set for the room size for testing Experimental Example 6.

division Dry bulb (℃) Wet bulb (℃) Absolute humidity (kg/kg) Relative humidity (%) Enthalpy (kJ/kg) Density (kJ/㎥) Cooling (summer) 24 17 0.00091 48.9 47.29 1.181 Heating (winter) 22 13.7 0.0064 39.2 38.38 1.191

division Dry bulb (℃) Wet bulb (℃) Absolute humidity (kg/kg) Relative humidity (%) Enthalpy (kJ/kg) Density (kJ/㎥) summer 35 24 0.014 39.6 71.11 1.136 winter 2 0.4 0.0032 74 10.03 1.014

[Table 2] shows the indoor temperature and humidity conditions, and [Table 3] shows the outdoor temperature and humidity conditions. In addition, natural ventilation (NV), an energy recovery ventilator (ERV), and Example 3 (CAS) , CO ₂ Adsorption System) indoor energy load was calculated.

First, looking at the indoor energy load for natural ventilation and heat recovery ventilation systems, as shown in [Table 4] and [Table 5] below.

kJ kWh/day kWh/month cooling 2508.39 16.72 501.68 heating 2985.43 19.90 597.09

Electric heat (%) kWh/month cooling 60 200.67 heating 75 149.27

In other words, referring to FIG. 11, it can be seen that the heat recovery ventilation system can reduce the cooling and heating loads by 60% and 75%, respectively, compared to natural ventilation. In addition, Example 3 was used in a closed situation without ventilation. , adsorption of carbon dioxide takes place.

At this time, when the number of occupants in the same area as [Table 1] is calculated as 3 and the occupancy time is calculated as 10 hours, the total daily CO2 emissions are as shown in [Table 6], and the amount of carbon dioxide according to the need for carbon dioxide capture The results are as shown in [Table 7]. In addition, the photovoltaic cooling design point according to Example 3 and the 320W solar panel conditions are shown in [Table 8].

personnel Night residence time (h/day) _CO2 emissions (kg/day) Total _CO2 emissions (kg) 3 people 10 0.93 1.1625

Initial _CO2 (ppm) Reference _CO2 (ppm) Initial _CO2 (g) Rise _CO2 (g) Reference _CO2 (g) Remove _CO2 413.2 800 150.879154 1313.37915 292.1184 1.0212608

In [Table 7], initial CO2 refers to the average CO2 concentration outside, and standard CO2 refers to the appropriate indoor CO2 concentration under the Building Equipment Act. Considering the total CO2 emissions in [Table 6], the amount of CO2 that needs to be removed to maintain the standard CO2 [ppm] concentration in the same volume as in [Table 1] can be confirmed.

Width (m) Height (m) Height (mm) Area (㎡) t_ads(mm) Density (kg/㎥) m_ads(kg) 1.69 0.99 35 1.6731 30 145 7.277985

[Table 8] shows the conditions of commercially available 320W PV cells. At this time, t_ads means the thickness of the coating layer, and m_ads means the total mass of the adsorbent based on it. Referring to [Table 6], [Table 7], [Table 8], and FIG. 11, it can be seen that in the case of Example 3 (CAS), cooling and heating loads do not occur, but rather electricity is produced.

Accordingly, the initial construction cost is low, maintenance is not required, there is no energy consumption in operation, and the cooling performance is excellent, which can lower the panel temperature rise due to the radiant heat of the solar panel, thereby extending the life of the solar panel. An optical panel passive cooling device can be provided. In addition, by removing indoor carbon dioxide, the building cooling and heating load can be reduced.

The above detailed description is illustrative of the present invention. Additionally, the foregoing is intended to illustrate preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications are possible within the scope of the inventive concept disclosed in this specification, the scope equivalent to the written disclosure, and/or the technology or knowledge in the art. The written examples illustrate the best state for implementing the technical idea of the present invention, and various changes required for specific application fields and uses of the present invention are also possible. Accordingly, the detailed description of the invention above is not intended to limit the invention to the disclosed embodiments. Additionally, the appended claims should be construed to include other embodiments as well.

10: adsorption layer
20: circulation fan
30: circulation duct

Claims (8)

photovoltaic cell; and
A solar panel including a passive cooling device provided on the rear side of the photovoltaic cell and including an adsorption layer capable of adsorbing and desorbing carbon dioxide.
According to paragraph 1,
The adsorption layer is an adsorbent of at least one of mesoporous silica, zeolite, and metal organic framework, or a combination thereof, and a solar panel including a passive cooling device.
According to paragraph 2,
The mesoporous silica is any one of SiO ₂ , SBA-15, and MCM-41, or a combination thereof,
The zeolite is any one of zeolite 13X, zeolite 5A, zeolite 3A, SAPO-34, and SSZ-14, or a combination thereof,
The metal organic framework is MOF-5, MOF-74, MOF-99, MOF-177, MOF-235, MOF-253, IRMOF-1, IFMOF-16, UIO-66, UIO-67, UiO-68 , MIL-53, MIL-88, MIL-100, MIL-101, LIC-1, ZIF-8, ZIF-90, Fe-BTC, and Cu-BTC, or a combination thereof. Solar panel containing the device.
According to paragraph 3,
The adsorption layer further includes an amine-functionalized material,
The amine-functionalized materials include polyethylenimine (PEI), tetraethylene pentamine (TEPA), ℃tadecyltrimethoxysilane (ODTMS), (3-Aminopropyl)trimethoxysilane (1-APTES), 3-(2-aminoethylamino)propyltrimethoxysilane (2-APTES), 3 -[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane (3-APTES), monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), methyl diethanolamine (MDEA), aminoethyl ethanolamine (AEEA) and diethylenetriamine (DETA) A solar panel comprising a passive cooling device, including any one or a combination thereof.
According to paragraph 2,
The adsorption layer is a solar panel including a passive cooling device coated by spraying the adsorbent with a supersonic nozzle.
According to paragraph 1,
The adsorption layer is provided inside a building corresponding to the photovoltaic cell, and is capable of capturing indoor carbon dioxide of the building. A solar panel including a passive cooling device.
According to clause 6,
A solar panel including a passive cooling device, further comprising a circulation fan provided in the adsorption layer to circulate indoor air.
In clause 7,
A solar panel including a passive cooling device, further comprising a circulation duct provided along the adsorption layer and allowing indoor air to circulate in one direction by the circulation fan.