WO2024079502A1 - Dispositif de transfert rapide d'énergie thermique, procédé de réalisation dudit dispositif et système de production d'électricité à émissions nulles à partir d'autres sources renouvelables intégrées audit dispositif - Google Patents
Dispositif de transfert rapide d'énergie thermique, procédé de réalisation dudit dispositif et système de production d'électricité à émissions nulles à partir d'autres sources renouvelables intégrées audit dispositif Download PDFInfo
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- WO2024079502A1 WO2024079502A1 PCT/IB2022/059719 IB2022059719W WO2024079502A1 WO 2024079502 A1 WO2024079502 A1 WO 2024079502A1 IB 2022059719 W IB2022059719 W IB 2022059719W WO 2024079502 A1 WO2024079502 A1 WO 2024079502A1
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- WO
- WIPO (PCT)
- Prior art keywords
- thermal energy
- layers
- electric energy
- substrate
- carbonaceous material
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/30—Thermophotovoltaic systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F2013/005—Thermal joints
- F28F2013/006—Heat conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/38—Cooling arrangements using the Peltier effect
Definitions
- the present invention relates to the field of heat conducting devices.
- the present invention relates to a device capable of capturing the thermal energy, hot or cold, which impacts on the surface of said device exposed to the thermal energy, present in the surrounding environment (air and/or solar radiation, therefore renewable source), or from other non-renewable sources, for the rapid transfer of said thermal energy captured from a point "A" to a point "B".
- the present invention relates to a device for the rapid transfer of thermal energy (hot or cold) at a speed higher than the convective capacity of the adjacent media.
- Said device for the rapid transfer of thermal energy (hot or cold) according to the present invention is functional in the terrestrial environment (with atmosphere) and in space (without atmosphere).
- the present invention relates to a device for the rapid transfer of thermal energy (hot or cold) at a speed higher than the convective capacity of the adjacent means and to a manufacturing method of the said device.
- the present invention also relates to an integrated system for the production of electrical energy from renewable sources, in which a device is used for the rapid transfer of thermal energy according to the present invention coupled to a first generator of the thermoelectric type which feeds an electronic group integrating a possible second kinetic type generator and a possible third photovoltaic type generator assisted by a rapid transfer system of thermal energy coupled to a thermoelectric generator in order to cool the cells of the photovoltaic generator to improve its efficiency an to make up for the lack or insufficiency of radiation bright.
- thermal energy transfer has been known for a long time: there are different types of thermal energy transfer systems which exploit convection or thermal conduction to extract heat or cold from a first body by directing it towards a second body.
- cooling systems for engines which use air or water or other fluids to transfer the heat to be subsequently dissipated via a radiating surface.
- a first object of the present invention is to describe a device for the rapid transfer of thermal energy which is free from the drawbacks described above.
- a second object of the present invention is also that of describing a production method of said device for the rapid transfer of thermal energy.
- a third object of the present invention is also that of describing an integrated system of electric power supply from renewable sources which contributes to reducing the drawbacks described above and which is more energy efficient.
- a device 1 is made for rapidly transferring thermal energy from a source of thermal energy "A" and point or surface for capturing said thermal energy to an arrival point "B" at a speed exceeding the capacity convection and conduction of the adjacent means 2, allowing the thermal energy to be converted into electrical energy with zero emissions harmful to the environment and to living beings by means of a conversion device 3 positioned at the arrival point B.
- the thermal energy is transferred by means of a coating 4 consisting of a plurality of nanometric layers with atoms forming ordered geometric structures.
- various energy recovery devices are provided characterized by high thermal conductivity (hot or cold) suitable for the rapid transfer of thermal energy, avoiding any type of dispersion in the fluids or other materials which may be in contact with said devices.
- said devices are made in a nanotechnological environment by coating substrates (objects): a) rigid, metal, glass or crystal (transparent or non-transparent plates), ceramic or porcelain, composed with vegetable or synthetic fibers; b) semi-rigid, plastic, organic polymers or amorphous synthetic or semi-crystalline, composites with vegetable or synthetic fibers; c) flexible, organic or synthetic fabrics.
- substrates objects: a) rigid, metal, glass or crystal (transparent or non-transparent plates), ceramic or porcelain, composed with vegetable or synthetic fibers; b) semi-rigid, plastic, organic polymers or amorphous synthetic or semi-crystalline, composites with vegetable or synthetic fibers; c) flexible, organic or synthetic fabrics.
- Said device 1 is a structure of material a) or b) or c) acting as a support substrate comprising a first layer of thermally conductive carbonaceous material; said layer being superimposed on said surface of the structure acting as a support substrate and having an oriented geometrical molecular structure, and a thermoelectric converter in contact with said layer of heat conducting carbonaceous material.
- the present invention also describes a production method of said devices for the rapid transfer of thermal energy; said method comprises at least one deposition step of at least one layer of carbonaceous material with an ordered geometric structure on a structure acting as a support substrate, made of transparent glass (without altering its transparency) or non-transparent glass or metal or other material a) or b) or c), in a Nano technological environment of a deposition machine.
- Said nano-tech environment of a deposition machine being vacuum packed and isolated from the external environment under controlled temperature and pressure conditions; said deposition taking place along an orthogonal or locally radial direction to a plane or shape substantially identified by said support substrate.
- Said deposition step advantageously comprises an acquisition step of at least one set of parameters with pressure and temperature values within said isolated environment, with voltage and frequency values of the substrate, for the correct management of the process.
- Said deposition step comprises at least one magnetron for generating an electromagnetic field acting on at least a portion of said support substrate and an automatic control system of said intensity of said electromagnetic field by means of a data processing and emission of commands unit suitable for the dynamic parametric management of said deposition machine.
- Said electromagnetic field intensity is adapted according to at least a part of said set of parameters for the dynamic parametric management of said deposition machine.
- Said electromagnetic field is generated by a magnetron generator and wherein said deposition step comprises a relative continuous coordinated movement between said magnetron generator and said support substrate.
- said method also comprises a previous pre-washing step and a washing step of said support substrate carried out before introducing said support substrate into the process chamber of the deposition machine.
- thermoelectric conversion means (inspired by well-known physical phenomena, ie the Peltier effect and the Seebeck effect), having at least a first surface and a second surface; said first surface being positioned in contact with the face of the stratification 12 opposite the face in contact with the support substrate 11 or 11 a at a different distance from said first surface of said thermoelectric conversion means being subject in use to a thermal differential with respect to said first surface; said thermoelectric conversion means being capable of causing the production of electric energy as a function of said temperature differential.
- said thermoelectric conversion means comprise a first Peltier-like cell.
- thermoelectric conversion means further comprises a second Peltier-like cell, and wherein each of said first, second Peltier-like cells comprises said first and second surfaces; said second surface of said first Peltier-like cell being positioned in substantial proximity to said first surface of said second Peltier-like cell providing a means of recovering residual thermal energy generated by the operation of said first Peltier-like cell.
- said rigid or semi-rigid or flexible support substrate is three- dimensional (non-flat).
- each of said layers of carbonaceous material is heat conductive.
- each of said layers of carbonaceous material has a predetermined o percentage amount of sp type bonds and a predominantly predetermined percentage amount of sp type bonds.
- thermoelectric conversion means comprise at least one similar Peltier cell or at least one similar thermocouple according to the Seebeck effect.
- an integrated system for supplying electrical loads from renewable energy sources comprising at least one device for transferring thermal energy according to the present invention physically coupled to a first generator of the thermoelectric type which supplies power to an electronic unit integrating other generators from renewable sources such as a possible second kinetic type generator and a possible third photovoltaic type generator.
- said electronic group having respective outputs electrically connected and feeding at least one stage of transformation of electric energy for feeding civil or industrial electric devices or loads.
- thermoelectric converter and/or electric energy generators electrically connected to said electric energy transformation stage and configured to supply with an electric energy stored by them and coming from said thermoelectric converter and/or electric energy generators from renewable sources to said power supply of said energy transformation stage electricity in the event of a power failure from said thermoelectric converter and/or generators of electricity from renewable sources.
- thermoelectric converter electrically connected with said thermoelectric converter, with said generators of electric energy from renewable sources and with said electric energy transformation stage by means of a charge regulator stage capable of supplying said stage of electric energy batteries or accumulators at least when partially discharged; said charge regulator stage replacing the power supply of said electric energy transformation stage when an electric energy absorption required by said electric energy transformation stage is higher than the electric energy fed to it by said thermoelectric converter and/or by called generators of electricity from renewable sources.
- said system also comprises at least a possible second kinetic generator of electric energy and a possible third photovoltaic generator of electric energy, capable of supplying together with said thermoelectric converter and/or said generators of electric energy from renewable sources, said transformation stage of electric energy.
- this system further comprising a voltage converter of the Buck- Boost type, comprising inputs powered by said thermoelectric converter and/or said generators of electrical energy from renewable sources and an output supplying said electrical energy transformation stage and an input of called charge regulator stage.
- said generators of electric energy from renewable sources comprise at least one possible photovoltaic generator and at least one possible wind generator.
- FIG. 1 illustrates the concept of the system: rapid transfer of thermal energy and conversion into electrical energy
- FIG. 2 illustrates a first embodiment of a device for the rapid transfer of thermal energy
- FIG. 3 illustrates a second embodiment of a device for the rapid transfer of thermal energy
- FIG. 4 illustrates a third three-dimensional embodiment of a device for the rapid transfer of thermal energy
- FIG. 5 shows a schematic representation of a machine for manufacturing the device of figures 2 and 3;
- FIG. 6 illustrates a schematic representation of an integrated power supply system
- figure 7 and figure 8 each show a graph of a process detail of the processing for the purpose of obtaining the device according to the present invention, and in detail they concern a graph of density as a function of the thickness of a coating layer of carbonaceous material and a percentage of sp -type bonds depending on the supply voltage of a substrate;
- FIG. 9 illustrates a table of thickness values of layers of carbonaceous material. Detailed description of the invention.
- the reference number 10 or 10a indicates as a whole a thermal energy transfer device, which is configured to convey the thermal energy in one or more substantially predetermined directions to allow its transformation into energy electric.
- the device 10 comprises a support substrate 11 in rigid or semi-rigid or flexible material, substantially planar in shape and lying on a plane identified by a first pair of axes X, Y, on which at least one layer 12 of carbonaceous material is superimposed, which has an ideally uniform thickness over its entire surface, and which therefore identifies a first face 13 and a second face 14 opposite each other with respect to other and in detail respectively facing the substrate 11 and towards the outside.
- the various substrates include metals, glass or crystals (sheets transparent or non-transparent), ceramics or porcelain, compounds with vegetable or synthetic fibres.
- the layer 12 makes it possible to provide a guide in at least one preferential direction of the thermal energy captured at the second face 14 of the layer 12 itself.
- the device 10 according to the present invention is characterized by the presence of a plurality of carbonaceous
- figure 4 shows, in a non-limiting way, an example relating to a car windscreen;
- the device 10a according to the present invention comprises a support substrate 11a made of rigid or semi-rigid material (in the specific case it is laminated glass), with a three-dimensional shape on which is superimposed, along the Z axis or in the radial direction, a plurality of carbonaceous layers 12a, 12b, 12c, 12d, etc. which are repeated with alternating sp carbon layers and sp carbon layers 3 until the expected total thickness is reached; all the sp layers, identical to each o other, are thicker than the sp layers.
- a support substrate 11a made of rigid or semi-rigid material (in the specific case it is laminated glass), with a three-dimensional shape on which is superimposed, along the Z axis or in the radial direction, a plurality of carbonaceous layers 12a, 12b, 12c, 12d, etc. which are repeated with alternating sp carbon layers and
- the device 10 or 10a according to the present invention is made by a process which comprises a first pre-washing phase and a washing phase, in which the substrate 11 or 11 a is thoroughly cleaned so as to reduce the presence of impurities which could compromise the correct application of the first layer 12 of carbonaceous material.
- the first prewash phase is designed to proceed with the elimination of all impurities of the micrometric type and in the washing phase impurities of nanometric size are eliminated.
- temperatures higher than 65°C can be reached during the pre-washing step and the washing step, it is important that also the substrate 11 or 11 a can be subjected to these temperatures without being damaged or altered.
- the pre-washing phase is performed in a first alternative solution using:
- the cleaning phase may include, in addition to or in place of one or more of the previous phases:
- RCA Clean which removes metal, oxide and organic contaminants, and is performed in two phases: a first phase of organic cleaning, which advantageously removes insoluble organic contaminants with a 5: 1 :1 solution of H2O: H2O2: NH4OH; and a second phase called "Oxide Strip", in which a thin layer of SiO2 is removed in which metal contaminants may have accumulated.
- piranha clean or “piranha etch” which removes organic materials (photoresist, oils, etc.) which is obtained with 98% of H2SO4 and 30% of H2O4 in volumes 2-4:1 , followed by heating the substrate thus cleaned to 100°C; - an ultrasonic cleaning step, in which the substrate is placed in an ultrasonic cleaning device to remove contaminants.
- An alternative substrate 11 or 11 a cleaning solution has been observed in trials to include immersion in Piranha solution (H2SO2 : H 2 O 2 7:3 for 10'), followed by ultrasonic cleaning.
- the substrate 11 or 11 a is made of ferrous material, and particularly of steel, it is possible to opt for cleaning with NaOH, followed by ultrasonic cleaning.
- the cleaning step always ends with a deposition of the substrate 11 or 11 a in an HV chamber, in which it is cleaned with low energy etching to avoid amorphization. At this point the substrate is ready to be processed.
- a threshold pressure is reached (preferably less than 10' 1 Pa ) following which a deposition step of one or a plurality of layers 12 of carbonaceous material takes place.
- the deposition machine 100 comprises at least one magnetron unit 120 composed of one or a plurality of magnetron devices, movable or fixed when the substrate is being moved, positioned inside the vacuum chamber 110 and an inlet for gas 150 also with the end positioned in said vacuum chamber 110.
- the vacuum chamber 110 creates a clean environment, isolated from the outside, in which the following deposition phase takes place under controlled temperature and pressure conditions and suitably suitable for the type of support substrate 11 or 11 a.
- the magnetron unit 120 is activated and produces an electromagnetic field which strikes the substrate 11 or 11 a in a precise manner during its movement substantially parallel to the profile identified by the substrate 11 or 11 a. Substantially therefore, between the magnetron group 120 and the substrate 11 or 11 a there occurs a movement relative to the profile, planar on the X-Y axes or three-dimensional on the X-Y-Z and/or radial axes, which allows a deposition of the layer or of the plurality of nanometric layers of carbonaceous material in a very precise way, compared to a traditional sputtering technique, guaranteeing homogeneous stratifications with a high degree of regularity for both types of layers with sp bonds and with sp bonds.
- an electron gun 130 integrated in the magnetron unit which transmits an electron beam against a target 140 (always integrated in the magnetron unit) made of carbon or pure graphite at 99.99% of the preferably but not limitedly planar type positioned in contact with a suitable electrode.
- Carbon atoms directed towards the substrate 11 or 11a are released from the carbon target 140.
- the target 140 was selected as at least 99.99% pure graphite, so as to be able to obtain a coating with an sp tetrahedral crystalline structure which has characteristics similar to diamonds.
- the purity of the graphite with a value of at least 99.99% is necessary to obtain the deposition of the plurality of layers 12 of highly efficient carbonaceous material, and to avoid spreading inside the vacuum chamber 110 impurities susceptible to create complications during the process and such as to increase, even significantly, the operating times due to the intervention of the quality control systems with which the deposition machine 100 is equipped.
- the magnetron 120 is activated with physical parameters and with times depending on the methods and times relating to the introduction, within the chamber 110, of auxiliary technical gases, indispensable for the deposition process.
- the deposition step can comprise one or more deposition steps of a layer 12 of carbonaceous material, with specific modalities for layers with sp bonds or for layers o with sp bonds, and according to the overall thickness to which the set of layers 12 is to be brought .
- the deposition machine 100 allows the deposition of a layer 12 of sp or sp carbonaceous material having a thickness - measured along the Z axis - equal to a few nanometers and, in any case, to depending on whether it is sp (thickness greater than sp ) or if it is sp .
- each layer 12 of carbonaceous material is superimposed on further homogeneous layers of sp alternating with homogeneous layers of sp (sp with a thickness lower than those of sp ) until a predetermined total thickness is reached according to the actual application considering that the maximum thickness is equal to 6pm.
- the deposition of the various layers on the substrate 11 a is substantially radial.
- the number of layers 12 of carbonaceous material allows the amount of thermal energy to be determined a priori, as a function of the temperature differential, which the device 10 according to the present invention is capable of transferring.
- a time interval is left between one deposition step and the next in order to keep the temperature below values likely to cause a reduction in the performance of the device 10 .
- the substrate 11 or 11 a can optionally be subjected to an electric voltage other than zero, which, as described below, can in some cases even reach a few hundreds of Volts. This voltage is known in technical jargon as the "bias voltage”.
- bias voltage it favors the deposition process of the carbonaceous material on the substrate 11 or 11 a.
- the percentage 2 3 of sp bonds, typical of graphite varies in relation to the percentage of sp bonds, typical of diamond, which will be obtained in the overall layer of deposited carbonaceous material.
- sp or sp bonds are meant those bonds generated by the hybridization process, which occurs on a predetermined number of orbitals (s, p, d orbitals) with content eslightly different energy; this bond allows to obtain new equivalent (isoenergetic) hybrid orbitals with lobes oriented along the directions of the possible bonds that the central atom of one or more molecules can form with other atoms.
- the carbonaceous material assumes a substantially crystalline form with an ordered geometric structure, similar to that of diamond; in particular, through the use of the magnetron/s 120 a geometric structure is recreated formed by a plurality of nanotubes which in a first and simpler embodiment of the deposition process are oriented in the same direction.
- the bias voltages on the substrate 11 or 11 a can vary, consequently varying the crystalline form of the carbonaceous material from layer to layer and consequently the characteristics of resistance, density and heat transfer capacity for each layer.
- carbon has a prevalence of sp -type bonds, typical of diamond, rather than sp -type bonds, typical of graphite.
- the crystalline structure is of the tetrahedral type.
- the diagram of figure 7 illustrates in detail a structure in which the substrate 11 or 11 a was subjected to a bias voltage of -20V, both with a single deposition phase (continuous line), and with multiple deposition phases (solid line dotted). Now, it can be observed from this graph how the rapid growth of density for the lower thicknesses, along the Z or radial axis, indicates the presence of few micro voids: index of the generation of sp -type bonds.
- Figure 8 shows in detail how the variation of the bias voltage on the substrate 12 favours the formation of bonds of the sp or sp type.
- the graph in question shows that between -20V and 0V the percentage of sp type bonds remains close to 30% and then suddenly increases in the range between 0 and 20V, stabilizing around 45% and then decaying between about 40% and 38% in the range substantially between 30V and 100V. Beyond this bias voltage value, a more rapid decay of the 3 percentage of sp bonds is observed, which, except for a brief decline decreases linearly to just under 20% at a bias voltage of 200V.
- the graph of figure 8 can therefore be divided into three sub-areas, a first (I) in which with bias voltages between -20V and 0V there is no ion bombardment by the carbon, which settles gently on the substrate 11 or 11 a, the which is subjected only to the action of the technical gas introduced into the vacuum chamber 110; the carbon deposition therefore takes place in a condition of almost equilibrium.
- the total product thickness is equal to 900-1000-2600 Angstrom.
- the first deposition consists of a bilayer with dA1 ⁇ 150 A, dB1 ⁇ 230 A. From the second to the ninth deposition dA ⁇ 50 A. The total thickness is equal to 2620 A .
- the content of sp 3 depends on V b .
- the first layer deposited A1 shows a low stress (1 .35 GPa) and ensures good adhesion to the substrate 11 .
- the first layer B1 deposited on A1 , shows an increase in stress up to 4.5 GPa.
- the successive depositions of layers 12, both A and B have little effect. Above 1800 A thickness the stress saturates at 5.2 GPa.
- a first recipe, performed by sputtering with Magnetron on the previously described machine includes:
- the first recipe identified above has made it possible to create devices whose overall layer is, for example, equal to:
- a second recipe performed with pulsed bipolar asymmetric sputtering includes:
- the second recipe identified above has also made it possible to create devices whose overall layer is, for example, equal to:
- the third recipe was also tested with thicknesses of the carbonaceous material layer(s) of 300 nm; 600 nm; 1 pm; 3 pm; 6 pm; 10 pm; 20 pm.
- the deposition process is advantageously capable of leaving the characteristics of the support substrate unaltered. This is particularly important if the support substrate must be an already known material or element, whose dimensional and mechanical strength characteristics must remain unchanged to allow the previously imposed task to be carried out and to maintain the compatibility of the installation on electromechanical or mechanical systems even of a complex type.
- the process described also increases the resistance to chemical agents and to the action of eroding agents such as sand found in desert areas but also in coastal areas and which could cause even significant abrasion of the surface of the support substrate and layers of coating in carbonaceous material assembly.
- the transport of thermal energy offered by the device 10 or 10a according to the present invention is of the anisotropic type and therefore has a preferential direction.
- this must not be understood in a limiting way, since it is possible to obtain different preferential directions for each layer 12 of carbonaceous material which is deposited on the previous one.
- the machine 100 is equipped with a data processing unit, with specific software for managing the deposition process and with a plurality of sensors positioned inside the vacuum chamber 110, electrically connected with said data processing unit, which pilots - directly or through servo systems at least: the amount of energy and the frequency emitted by the magnetron/s, the operating pressure and the gas flow introduced inside the vacuum chamber 110 itself.
- the quantity E of energy, the frequency emitted by the magnetron(s) and the flow F of gas are varied as a function of at least two parameters: the temperature of the substrate T sub and the residual pressure inside the vacuum chamber P c Therefore, the data processing unit, by means of specific software, implements a feedback control in which at each instant of time the values of the quantity E of energy and of the flow F of gas are adapted according to the parameters mentioned above and coordinated with the mechanical movement of the support substrate and of the magnetron unit/s in order to keep each single layer of the overall thickness of the stratified deposition 12 of carbonaceous material uniform and homogeneous.
- the plurality of sensors electrically connected to the data processing unit preferably includes at least one pressure sensor of the capacitive type and at least one gas flow sensor.
- the data processing unit is configured to start the deposition phase with a predefined set of parameters (E, Hz, F), which is then adapted according to the data collected by the set of sensors positioned inside the vacuum chamber 1 10 during the course of the deposition step itself.
- the device 10 or 10a allows the rapid transfer of thermal energy in the presence of a thermal differential between the substrate 1 1 or 1 1 a and the second face of the layer of upper carbonaceous material.
- the structure of the layer or layers of carbonaceous material is such as to rapidly transfer thermal energy from a source of thermal energy A to an arrival point B at a speed higher than the convective and conductive capacity of the adjacent media, allowing to convert the thermal energy, captured and transferred, into electric energy with zero harmful emissions, for the environment and for living beings, by means of a conversion device 3 positioned at the arrival point B, effectively realizing a sort of thermal superconductor.
- the thermal dispersion for example from radiation towards the environment surrounding the device itself, is reduced to a minimum.
- the device 10 or 10a can be integrated with a thermoelectric converter 20, capable of converting thermal energy into electrical energy.
- the thermoelectric converter 20 can be applied at one side of the device 10 or 10a on a portion of the surface of the laminate 12, thus realizing a system for converting thermal energy into electrical energy.
- thermoelectric converter 20 which in detail has its first surface 20f resting directly on the stratification 12 applied on the support substrate 11 or 11a, is preferably made by means of one or a plurality of cells similar to Peltier or by a plurality of similarly thermocouples according to the Seebeck effect, through which the overall efficiency achieved by the system in thermal-electric conversion can reach 40% (peaks of 55% have also been detected in the laboratory).
- thermoelectric converters with a temperature differential equal to 50°C, having a heating or cooling of the stratification 12 of the device having an exposed surface equal to 1 m 2 , electrical powers of 4000W are obtained, which drop to 2700W if the temperature differential is 40°C, to 1150W if the temperature differential is 30°C, to 850W if the temperature differential is 20°C, 550W if the temperature differential is 10°C or 300W if the temperature differential is 5°C.
- the device object of the present invention is not subjected to a differential (therefore not able to produce electric energy), it can be triggered with the following procedure: by feeding the thermoelectric converter with an electric current, the converter itself will be subject to a temperature variation capable of causing the transfer of thermal energy between the layers of carbonaceous material present on the substrate.
- thermoelectric converter 20 This injection of energy (the quantity of electric energy to trigger the operation is quantifiable in 5-?6W for about 120 seconds) will be used as a starting condition of unbalance to start the rapid transfer of thermal energy captured by the layer of carbonaceous material towards the thermoelectric converter 20.
- thermoelectric converters 20 i.e. in which each thermoelectric converter 20 has a first face or upper surface (technically definable as a "hot” face) and a second lower face or surface (technically definable as a "cold” face), and in which the second lower face of the first thermoelectric converter of said pair rests or in any case faces the first upper face of the second thermoelectric converter of said pair.
- a small heat sink or heat dissipator is often present on the second face, which if present does not allow the direct support of two contiguous surfaces of two distinct Peltier cells.
- the described system allows a part of the dissipated thermal energy coming from the first thermoelectric converter to be recovered on the second thermoelectric converter.
- the device for the rapid transfer of thermal energy can be integrated in an energy recovery system for the production of electrical energy from renewable sources, in which a device for the rapid transfer of thermal energy according to the present invention is used coupled to a first generator of the thermoelectric type feeding an electronic group integrating a possible second generator of the kinetic type, a possible third generator of the photovoltaic type which can be assisted by a possible fourth device for the rapid transfer of thermal energy according to the present invention coupled to a second thermoelectric generator with the primary purpose of removing heat to maintain the best efficiency of the photovoltaic cells.
- the reference number 300 indicates the entire complex device 100 (for the capture and rapid transfer of the captured thermal energy) coupled to a first complex generator device 304 (thermoelectric for producing electric energy ).
- the system can be integrated with a possible second kinetic generator 310 connected to the group 315 (rectifier/rectifier) via line 311 and to a possible third photovoltaic generator 330 which can be assisted with a fourth system 330a (complex device 100, for capturing and the quick transfer of the captured thermal energy according to the present invention) coupled to a second complex generator device 331 a (thermoelectric to produce electric energy) to maintain the best efficiency of the photovoltaic device 330.
- the voltage converter unit 340 of the Buck-Boost type is connected at the input, via lines 302, 316, 331 and 332a, to the first generator 300, to the possible second generator 310, to the possible third generator 330 and to the possible fourth generator 330a and adjusts the output voltage for the correct power supply of the following groups:
- any inverter group for the supply of single-phase electric current conforming to the normal civil network for example: 230V, 50Hz with neutral and earthing;
- the voltage converter 340 is connected at the output via the bipolar line (+ and -) 342 to the group 350 (accumulator charger) which, via the bipolar line (+ and -) 351 , charges the accumulator group 370 .
- Said output group 370 supplies in case of emergency the group 380 and the group 390 or the 400 through the (+) line 352 which connects to the (+) line 346 (outgoing from the group 340) having the same value of positive voltage.
- the electric lines 302, 316, 331 , 332a, and 342 are represented by a single segment but are actually bipolar, they comprise a first positive electric conductor electrically isolated from a second negative electric conductor.
- the 311 line is actually a bipolar or three-pole alternating current line (depending on the type of kinetic generator) where each individual conductor is electrically isolated from a second or third conductor.
- Line 351 comprises a first positive electrical conductor electrically isolated from a second negative electrical conductor.
- the positive (+) lines 346 outgoing from the respective capacitor banks 344 and 345 are joined by nodes to the line 352, being electrically isolated conductors having however the same type of electric current and the same voltage value.
- the negative (-) or zero line 341 a has at least two nodes and is actually the electrical zero of the system.
- thermoelectric generator 301 coupled to the thermal energy transfer device there is a thermoelectric generator 301 , which includes an electric line 302 at its output, being the first power supply of the voltage converter 340.
- thermoelectric generator 301 coupled to the thermal energy transfer device there is a thermoelectric generator 301 , which includes an electric line 302 at its output, being the first power supply of the voltage converter 340.
- a possible second kinetic generator 310 connected to the rectifier group 315, which includes the electric line 316 at its output being the possible second power supply of the voltage converter 340.
- a possible third photovoltaic generator 330 which includes the electric line 331 at its output being the possible third power supply of the voltage converter 340.
- thermoelectric generator 331 a coupled to the thermal energy transfer device 330a, having the primary purpose of maintaining the best efficiency of the photovoltaic generator 330 even in moments of strong solar radiation, there is a possible fourth thermoelectric generator 331 a, which comprises in output an electric line 332a being the possible fourth power supply of the voltage converter 340.
- Each input line to the voltage converter unit 340 supplies its own specific Buck-Boost device, therefore having possible different input voltage values which said voltage values become identical after the conversion performed by the single "Buck-Boost" devices and therefore output on a single (+) electric positive terminal to which the monopolar line 341 is connected and a single negative (-) or electric zero terminal to which the monopolar line 341 a is connected.
- the unit 340 has a second output with a (+) terminal and a (-) terminal dedicated to supplying, via the bipolar connection 342, a possible device 350 for charging one or more accumulators via the bipolar connection 351 ( batteries) 370 for an advantageous energy reserve.
- the accumulator charger group 350 is configured to disconnect the power supply for electric recharging to the accumulators (batteries) 370 when it detects that they are fully charged, so as to reduce their wear and improve their service life.
- Using the 340 Voltage Converter with individual Buck-Boost devices is cost-effective as it allows the continuous voltage value to be increased or decreased from a first value coming from the thermoelectric generator 301 and/or from the kinetic generator 310 rectified by 315 and/or from the photovoltaic generator 330 and/or from the thermoelectric generator 331 a each connected to a specific Buck-Boost device adapting the individual values of voltage to the value necessary to power, for example the group 390 or the group 400.
- a specific Buck-Boost device adapting the individual values of voltage to the value necessary to power, for example the group 390 or the group 400.
- Advantageously said group 340 by adapting the voltage of the direct current produced by increasing it to the value necessary to power, for example, a delivery group 390 or a delivery group 400, allows to use even the small quantities of energy which would otherwise be lost because the voltage value is lower than the required threshold.
- said group 340 by adapting the voltage of the direct current produced by reducing it to the value necessary to power, for example, a delivery group 390 or a delivery group 400, also allows to use the energy that would otherwise be lost because the value voltage is higher than the required threshold.
- Said output voltage converter 340 has, as mentioned, an electric positive (+) terminal which via a single-pole connection 341 supplies a two-position switch 343 or equivalent electronic switches of the static type which via the single-pole connections 343a and 343b supplies alternatively a first bank of capacitors 344 and a second bank of capacitors 345.
- Said voltage converter 340 at its output, has, as mentioned, a terminal (-) or electrical zero reference to which they are connected via connection 341a, with various nodes, groups 380 and 390 or 400.
- said capacitor banks 344 and 345 ensure the positive (+) electric power supply, via the monopolar connections 346 possibly assisted by the monopolar connection 352 (+), of the data processing and communication unit (WI-FI) 380, of the eventual single-phase inverter 390 or any three-phase inverter 400.
- any group 390 fed with a direct current at the input via the positive line 346 and the zero line 341 a will supply a preferably sinusoidal alternating current compatible with the normal civil electrical network, for example single-phase 230V- 50Hz + neutral N and grounding .
- any group 400 supplied at the input with a direct current via the positive line 346 and the zero line 341 a will supply a preferably sinusoidal alternating current compatible with the normal industrial/civil electrical network, for example three-phase 3x380V-50Hz + neutral N and mass to the ground.
- both inverters 390 and 400 may be present and powered by lines 346 and 341a.
- the presence of the accumulator group 370 is also possible and in this case an electrical energy transformation system is created in which whenever the absorption required by said system is greater than the electrical energy that can be supplied by the thermoelectric generator assembly 301 and if present, of the kinetic generator 310 connected via 311 to the rectifier 315, of the photovoltaic generator 330 assisted by the thermoelectric generator 331 a, the accumulators 370 automatically intervene in the power supply providing the necessary energy.
- the data processing and WI-FI communication unit 380 is supplied with a direct current input through the positive line 346 and the zero line 341 a; by means of a microprocessor, it processes the input and output data coming from the 340, 350, 344, 345 and 390 group or 400 group and then transmits, via WI-FI on a computer or smartphone, to the remote control of the system of the present invention, the characteristic data relating to the operation of the individual groups, indicated in figure 6, by signaling any anomalies and indications relating to the maintenance methods.
- Substantially said unit 380 allows to have an overall control of the operating status of the system, and for example of the quantity of energy produced by the generator/s and by the inverter for the electric network 390 and/or 400, or in case of malfunctions.
- thermoelectric generator 301 • Thermal energy, hot and cold, via thermoelectric generator 301 ;
- thermoelectric generator 331 a • Thermal energy, heat to be dissipated to avoid overheating of the photovoltaic 330, by rapid transfer of thermal energy 330a and related thermoelectric generator 331 a according to the present invention.
- thermoelectric generator Said system described above, with reference to figure 6, combined with the possibility of integrating the accumulator group 370 creates a very effective integrated system both in the civil and in the industrial fields, the efficiency of which can be very high compared to electrical power supply systems from traditional renewables sources.
- the kinetic generator and the photovoltaic generator can also be absent, but already only the presence of a system for the rapid transfer of thermal, hot or cold energy, coupled to a thermoelectric generator according to the present invention can ensure electricity for civil or industrial applications .
- the system described above can therefore be installed in all those environments where there is no electrical distribution network and, at the same time, or where the supply of electrical power from the network is discontinuous with considerable advantages for maintaining the functioning of various equipment and, in any case, represents a significant energy saving.
- the device for transferring thermal energy also works in cold weather, provided there is a sufficient thermal differential. Therefore it is, for example, able to provide its contribution both during the winter months and during the summer months.
- thermoelectric device for the rapid transfer of thermal energy coupled to a thermoelectric device described above, as well as to the manufacturing method and to the electronic system described above, without thereby departing from the scope of protection provided by the annexed claims.
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Abstract
Dispositif (1) de transfert rapide d'énergie thermique d'une source d'énergie thermique (A) et de capture d'un point ou d'une surface de ladite énergie thermique à un point d'arrivée (B) à une vitesse supérieure à la capacité convective et conductrice du moyen adjacent (2) permettant à l'énergie thermique d'être convertie en énergie électrique avec des émissions nocives pour l'environnement et les êtres vivants nulles, au moyen de moyens de conversion thermoélectriques (3) positionnés au niveau du point d'arrivée (B). L'énergie thermique est transférée au moyen d'un revêtement (4) constitué d'une pluralité de couches nanométriques avec des atomes qui forment des structures géométriques ordonnées (Fig. 1). L'invention se rapporte également à un dispositif de transfert d'énergie thermique présentant une pluralité de couches de matériau carboné sur un substrat plan ou non plan (de forme tridimensionnelle) opaque ou transparent ou translucide ou semi-rigide de matériau métallique ou non métallique ou souple de tissu avec des fibres naturelles ou synthétiques ou flexibles, mais pas opaques ni transparentes ni translucides. La présente invention comprend également un procédé de production d'un dispositif permettant le transfert rapide d'énergie thermique (10 ou 10a). Ledit procédé comprenant une étape de dépôt d'au moins une couche (12, 12a-12b-12c-12d, etc.) de matériau carboné présentant une structure géométrique ordonnée sur un substrat de support (11 ou 11a) dans un environnement (110) d'une machine de dépôt (100), ledit environnement étant sous vide poussé et isolé de l'environnement externe dans des conditions de température et de pression contrôlées, ledit dépôt ayant lieu le long d'une direction orthogonale ou localement radiale à un plan ou à une forme sensiblement identifiée par ledit substrat de support (11 ou 11a). L'invention concerne également un système intégré pour la production d'énergie électrique au moyen dudit dispositif couplé à un générateur thermoélectrique et à d'autres générateurs possibles à partir de sources renouvelables du type : photovoltaïque et/ou photovoltaïque à thermoélectrique et/ou cinétique, toutes utilisées conjointement pour la fourniture de charges électriques (Figures 2, 3, 4, 5, 6).
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US20110139203A1 (en) * | 2009-12-16 | 2011-06-16 | Gm Global Technology Operations, Inc. | Heterostructure thermoelectric generator |
US20170088277A1 (en) * | 2014-09-28 | 2017-03-30 | Reebeez, Inc | Hybrid propulsion power system for aerial vehicles |
US9929690B2 (en) * | 2013-10-31 | 2018-03-27 | Massachusetts Institute Of Technology | Spectrally-engineered solar thermal photovoltaic devices |
EP3891884B1 (fr) * | 2018-12-05 | 2022-08-24 | Alma Mater Studiorum Universita di Bologna | Appareil de support et de refroidissement d'un panneau photovoltaïque |
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2022
- 2022-10-11 WO PCT/IB2022/059719 patent/WO2024079502A1/fr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110139203A1 (en) * | 2009-12-16 | 2011-06-16 | Gm Global Technology Operations, Inc. | Heterostructure thermoelectric generator |
US9929690B2 (en) * | 2013-10-31 | 2018-03-27 | Massachusetts Institute Of Technology | Spectrally-engineered solar thermal photovoltaic devices |
US20170088277A1 (en) * | 2014-09-28 | 2017-03-30 | Reebeez, Inc | Hybrid propulsion power system for aerial vehicles |
EP3891884B1 (fr) * | 2018-12-05 | 2022-08-24 | Alma Mater Studiorum Universita di Bologna | Appareil de support et de refroidissement d'un panneau photovoltaïque |
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