Transparent PVT system with heat transfer fluid and capillary heat pipe
Patent Information
- Application Number
- PCT/TR2025/050066
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-01-29
- Publication Date
- 2025-10-02
AI Technical Summary
Current PVT systems face issues with opaque panels, slow heat transfer, corrosion, and the need for pumping due to water circulation, leading to inefficiencies and increased electricity consumption.
A transparent PVT system utilizing capillary heat pipes filled with a phase-changing heat transfer fluid containing nano-sized solid particles like colemanite, borax, AI2O3, SiO2, CuO, TiO2, SiL, boron carbide, and szaybelite, which transfers heat efficiently without vacuuming, grooves, or pockets, allowing operation in various orientations and eliminating the need for circulation pumps.
The system achieves rapid heat transfer with high heat retention, maintains transparency, and enhances electricity production efficiency by passively transferring heat, reducing the need for fossil fuels and electricity consumption.
Smart Images

Figure TR2025050066_02102025_PF_FP_ABST
Abstract
Description
[0001] TRANSPARENT PVT SYSTEM WITH HEAT TRANSFER FLUID AND CAPILLARY HEAT PIPE
[0002] TECHNICAL FIELD
[0003] The invention relates to a transparent PVT (photovoltaic thermal) system with heat transfer fluid and capillary heat pipe, which can be used instead of transparent structures such as glass, and which receives heat from photovoltaic panels as a result of their heating while generating electricity from photons coming from the sun, with the help of capillary heat transfer pipes placed behind the panel, and transmits it to be used as needed (heating the indoor environment, obtaining hot water, etc.). The invention particularly relates to a transparent PVT system with capillary heat pipe, which takes heat from the heated surface of photovoltaic panels during the electricity generation process with the help of capillary heat transfer pipes, can change phase, does not cluster, contains colemanite, borax, AI2O3, SiOs, CuO, TiCh, SiL, szaybelite, boron carbide, boron solid particles between 10-200 nanometers and transmits the heat it receives with the help of capillary heat transfer pipes to be used under necessary conditions thanks to the catalyst effect of these solid particles, and contains heat transfer fluid that can change phase, increases the electricity production by increasing the efficiency of the panel by removing the heat from the panel as a result of the heating of the photovoltaic panel.
[0004] KNOWN STATE OF THE TECHNIQUE
[0005] Today, the continuous increase in energy demand is increasing the interest in sustainable and environmentally friendly energy sources. For countries; in order to combat global problems such as the depletion of fossil fuels, climate change and to meet energy needs, the use of renewable energy sources has become an important alternative.
[0006] One of the most important elements that stands out among renewable energy sources is solar energy. Solar energy used through photovoltaic thermal systems offers an effective solution for electricity and heat production.
[0007] Photovoltaic systems used in the electricity production of solar energy provide an environmentally friendly energy source by converting sunlight directly into electricity. At the same time, it is also possible to convert solar energy into heat through thermal systems.
[0008] Photovoltaic thermal (PVT) systems can use solar energy as both electrical and thermal energy. In these systems, photovoltaic panels are cooled by the sunlight they are exposed to, while electrical energy is produced, overheating is prevented and efficiency is increased. Photovoltaic thermal systems provide higher energy efficiency compared to traditional photovoltaic systems and stand out as an important step in energy diversity. They offer a more flexible and sustainable solution in meeting energy needs with both electrical and thermal production.
[0009] Renewable energy sources and especially photovoltaic thermal systems play an important role in achieving sustainability goals in the energy sector. The global application of these technologies plays an important role in meeting future energy needs by supporting environmentally friendly and longterm solutions in energy production.
[0010] In the current technique, water or air systems are used to cool the PVT. In water PVT systems, the cells are arranged directly on a cover plate with dielectric material in the absorber or core. The heattransmitting fluid passes through the middle of the channels on the absorber and takes the accumulated heat. By sticking the cells to the absorber, the heat of the cells is removed and the efficiency is prevented from decreasing. In this case, the need for pumping arises, causing the PVT to use electricity while producing electricity.
[0011] In PVT air systems, air is used instead of water. Air can be ventilated to the system by natural circulation or forced circulation.
[0012] In PVT systems, the panels are opaque and do not provide any sunlight permeability.
[0013] While the thermal conductivity coefficient of water used in the current technique is around 0.6 W / mK, that of air is quite low at 0.25 W / mK.
[0014] There are other negative reasons such as slow heat transfer in the current technique and corrosion of systems with water circulation over time.
[0015] As a result, the need for a new economical, practical, transparent PVT system with heat transfer fluid and capillary heat pipe and the inadequacy of current solutions have made it necessary to make a development in the relevant technical field.
[0016] PURPOSE OF THE INVENTION
[0017] The present invention is related to the transparent PVT system with heat transfer fluid and capillary heat pipe, which was developed to eliminate the above-mentioned disadvantages and bring new advantages to the relevant technical field, and which transmits the heat generated while the cells in the photovoltaic panel generate electricity with the rays they receive from the sun, by means of plates and heat transfer pipes, and cools the heated PV panel in order to be used according to need (heating the indoor environment, obtaining hot water, etc.). The most important purpose of the invention is to include a capillary heat transfer pipe containing a phase-changing heat transfer fluid. The phase-changing fluid transfers heat by changing from the liquid phase to the vapor phase. After transferring heat, it condenses and returns. In the phase-changing heat transfer system, evaporation is accelerated with the heat received thanks to the solid particles between 10-200 nanometers such as colemanite, borax, AI2O3, SiOs, CuO, TiCh, SiL, szaybelit, boron carbide, boron. Since these nano particles have a catalyst effect, heat transfer is carried out quickly. After heat transfer, these solid particles do not clump and do not stick to each other during condensation. During condensation, the heat pipe cools slowly thanks to the nano-sized solid particles that hit the inner walls and descend. In this way, the heat retention capacity is high. Thanks to these nano particles, heat pipes can be prepared without vacuuming. There is no need for sintering, grooves or pockets on the inner surfaces of the heat pipes. Thus, it can operate vertically and horizontally without any shape restrictions.
[0018] Another important purpose of the invention is that the fluid that can change phase, does not cluster, and can contain colemanite, borax, AI2O3, SiC , CuO, TiO2, SiL, boron carbide, szaybelite, boron solid particles between 10-200 nanometers can be found inside the pipes, thus enabling heat transfer without water passing through the pipes.
[0019] Another purpose of the invention is to reduce the need for fossil fuels by using the electrical and thermal energy produced by assembling transparent PVT into structures (houses, plazas, multi-storey buildings, greenhouses, etc.) by using it instead of transparent materials such as glass, polycarbonate sheets, transparent plexiglass sheets, but not limited to these.
[0020] One purpose of the invention is that transparent PV is transparent and since the capillary pipes are thin, it does not prevent the back of the glass from being visible and light transmittance.
[0021] One purpose of the invention is that the transparent PVT surface heats up thanks to the rays it receives from solar energy and heats up its back surface, and the heat received from its back surface through capillary pipes can be used in ways such as, but not limited to, heating the interior, obtaining hot water, etc.
[0022] Another purpose of the invention is to prevent the decrease in efficiency as a result of the heating of the transparent PVT heated by the heat pipes containing phase-changeable heat transfer fluid by taking excess heat, and to increase its efficiency and electricity production.
[0023] Another purpose of the invention is that it does not need any circulation pump since it passively transmits heat through capillary heat pipes. Thus, there is no pumping cost and electricity consumption. Another purpose of the invention is that the heat transfer fluid contained therein does not have any flammable, explosive, allergenic, carcinogenic or pathogenic effects, so it does not adversely affect the environment or human health.
[0024] Another purpose of the invention is that the phase-changing fluid provides rapid heat transfer due to its 16098 W / mK heat transfer coefficient.
[0025] The structural and characteristic features and all advantages of the invention will be understood more clearly thanks to the figures given below and the detailed explanation written by making references to these figures, and therefore the evaluation should be made by taking these figures and detailed explanation into consideration.
[0026] FIGURES TO HELP UNDERSTAND THE INVENTION
[0027] Figure 1 - This drawing shows a rear view of a capillary heat pipe transparent PVT system with phase change heat transfer fluid.
[0028] Figure 2 - This drawing shows a discrete view of the components of a capillary heat pipe transparent PVT system with a phase change heat transfer fluid.
[0029] Figure 3 -This drawing shows an example of a capillary heat pipe transparent PVT system with a phase change heat transfer fluid, used as a glass substitute in an example plaza.
[0030] REFERENCE NUMBERS
[0031] 10. Transparent PVT system with capillary heat pipe and heat transfer fluid
[0032] 11. Capillary heat transfer pipes
[0033] 12. Transparent PV
[0034] 13. Intermediate transfer pipe
[0035] 14. Glasses DETAILED DESCRIPTION OF THE INVENTION
[0036] In this detailed description, the preferred embodiments of the capillary heat pipe transparent PVT system (10) with heat transfer fluid are described only for a better understanding of the subject matter and in a non-limiting manner.
[0037] The inventive capillary heat pipe transparent PVT system (10) with heat transfer fluid shown in figure 1 is mainly composed of capillary heat transfer pipes (11), transparent PV (12) and intermediate heat transfer pipe (13) and glasses (14).
[0038] In the transparent PVT system with capillary heat pipes with heat transfer fluid (10), transparent PV (12), capillary heat transfer pipes (11) and intermediate heat transfer pipe (13) connected to it are placed between the glasses (14) to generate electricity. The transparent PV (12) cells are transparent, do not block the light and have a see-through structure. The capillary heat pipes (11) are made of thin pipes and do not interfere with light transmission and the back of the glass. In the transparent PVT system with capillary heat pipes with heat transfer fluid (10), electricity is generated by the photons from the sun in the cells in the transparent PVs (12). The transparent PV (12) generating electricity starts to heat up after a while. Heat is taken from the back surface of the transparent PV (12), which heats up with capillary heat transfer pipes (11) containing solid particles between 10-200 nanometers such as colemanite, borax, AI2O3, SiO3, CuO, TiO2, SiL, boron carbide, szaybelite, boron in the phase change heat transfer fluid, and transferred to the intermediate transfer pipe (13) with the phase change heat transfer fluid. The intermediate transfer pipe (13) containing the phase changeable heat transfer fluid transfers the heat to the component to be used according to the need (including but not limited to; radiator, towel warmer, etc. for heating the indoor environment and / or boiler for hot water, etc.). During electricity generation, the heated transparent PV (12) is cooled to increase its efficiency.
[0039] The transparent PVT system (10) with capillary heat pipe with heat transfer fluid can be positioned horizontally and / or vertically or at different angles. In addition, in our invention, there are capillary heat transfer pipes (11) and intermediate heat transfer pipe (13) containing phase changeable heat transfer fluid, which enable the system to operate passively, do not require circulation pump and electricity consumption.
[0040] The capillary heat transfer pipes (11) can be positioned horizontally and / or vertically or at different angles, including but not limited to, capillary heat transfer pipes (11) for cooling the transparent PVT system (10) with phase changeable heat transfer fluid.
[0041] Alternatively, in our invention, the phase changeable heat transfer fluid may comprise the aforementioned solid particles of 10-50 or 50-100 or 100-150 nanometers. It is clear that a person skilled in the art can demonstrate the novelty set forth in the invention by using similar constructions and / or can apply this construction to other areas with similar purposes used in the relevant art. Therefore, it is also obvious that such constructions will lack the criterion of novelty and especially the criterion of exceeding the state of the technique.
Claims
CLAIMS1- The invention relates to a transparent PVT system (10) with capillary heat pipe with heat transfer fluid that allows the heat generated as a result of the heating of the photovoltaic panel while generating electricity to be taken and used according to the need (for heating the indoor environment and / or obtaining hot water, etc.). A capillary heat pipe transparent PVT system (10) with a heat transfer fluid that enables the use of a transparent PV (12), characterized in that; transparent PV (12), which takes the heat generated on the surface of the transparent PV (12) by the generation of electricity by the cells on the transparent PV (12) from the back surface of the transparent PV (12) with the help of capillary heat transfer pipes (11) and prevents the transparent PV (12) from cooling and decreasing its efficiency, which contains 10-200 nanometer colemanite, borax, AI2O3, SiO3, CuO, TiO2, SiL, boron carbide, szaybelite, boron is characterized by containing a phase changeable heat transfer fluid with solid particles, which evaporates with the heat received through these particles and evaporates with the heat received, enabling rapid heat transfer, and which cools slowly during condensation after heat transfer thanks to the nanosized solid particles hitting the inner walls of the capillary heat transfer pipes (11) during condensation.2- A capillary pipe transparent PVT system (10) with heat transfer fluid capillary pipe according to claim 1, characterized in that it comprises an intermediate transfer pipe (13) which sends the heat generated to radiators, towel warmers, boilers for hot water supply, etc. for heating the indoor environment.3- Transparent PVT system (10) with capillary heat pipe with heat transfer fluid suitable for claim 1, characterized in that it includes capillary heat transfer pipes (11) and intermediate heat transfer pipe (13) containing phase changeable heat transfer fluid that enables the system to operate passively, does not require circulation pump and electricity consumption.4- A capillary heat pipe transparent PVT system (10) with heat transfer fluid capillary heat pipe according to claim 1, characterized in that it contains a phase changeable heat transfer fluid with a heat transfer coefficient of 16098 W / mK.- A capillary heat pipe transparent PVT system (10) with heat transfer fluid according to claim 1, characterized in that it comprises transparent PV (12) with high light transmittance, used instead of transparent structures such as glasses, polycarbonate sheets, transparent plexi sheets, and capillary heat transfer pipes (11) that do not interfere with the light transmittance of the system.