US20210018223A1 - Method for collecting solar radiation and transforming it into heat energy - Google Patents
Method for collecting solar radiation and transforming it into heat energy Download PDFInfo
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- US20210018223A1 US20210018223A1 US17/061,081 US202017061081A US2021018223A1 US 20210018223 A1 US20210018223 A1 US 20210018223A1 US 202017061081 A US202017061081 A US 202017061081A US 2021018223 A1 US2021018223 A1 US 2021018223A1
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Images
Classifications
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- 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
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/50—Preventing overheating or overpressure
- F24S40/57—Preventing overpressure in solar collector enclosures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/20—Working fluids specially adapted for solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/40—Casings
- F24S80/45—Casings characterised by the material
- F24S80/457—Casings characterised by the material made of plastics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- 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
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S2023/84—Reflective elements inside solar collector casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/60—Thermal-PV hybrids
Definitions
- the present invention relates generally to a solar thermal collecting system. More so, the present invention relates to a solar thermal collecting system that captures solar radiation and transforms it into heat energy.
- solar thermal collectors absorb radiant energy of sunlight and transfer it into thermal energy, then using the thermal energy to heat water or a heat transfer medium for subsequent applications.
- the solar thermal collector is generally configured with a solar selective coating for absorbing solar radiant energy and converting the solar radiant energy into thermal energy.
- U.S. Pat. No. 2,133,649 to Abbot discloses a solar heater apparatus that may be used for the production of power in steam engines, wherein the apparatus comprises a frame, a ray-collector and a ray-absorber containing an opaque liquid mounted on said frame.
- U.S. Pat. No. 2,182,222 to Courtis et al. teaches an apparatus for collecting and utilizing radiant solar energy.
- the apparatus comprises an adjustable parabolic reflector, an insulated tube rigidly supported in the focal line of the reflector, such that the relationship of the tube with respect to the focal line of the reflector remains unchanged, a means for circulating energy collecting fluid through said tube and a heat exchanger for receiving the circulated fluid and for extracting heat therefrom.
- U.S. Pat. No. 4,080,954 to De Wilde et al. describes a solar collector apparatus comprising a panel of blackened heat absorbing glass tubes connected in series, each tube having a cylindrical glass jacket with a half circular concave cylindrical reflector on its inner surface, wherein each glass tube lies in the focal plane of the reflector, thereby allowing it to circulate heat storing fluid in and out of the jacket.
- U.S. Pat. Nos. 4,096,861 and 4,217,885 to Bowles disclose an apparatus for collecting solar heat.
- the apparatus comprises a thin receptor panel adapted to be supported at an inclination across the path of sunlight directly into a layer of liquid held against and flowable only upwardly along the panel in shallow channels extending between upper and lower plenum spaces in a receptor chamber.
- the total volume of liquid filling the system is small in relation to the exposed receptor surface area that little sun time is lost in bringing the system to a relatively high temperature for delivery of the collected heat.
- U.S. Pat. No. 4,098,265 to Gravely describes a solar energy collector which utilizes a shallow, open-topped, foamed, integrally skinned or otherwise sealed plastic vessel with a multiple layer, light transmissive cover.
- An opaque, preferably black, liquid is utilized as the absorbing material which is circulated in direct contact with the cover and then to a heat exchanger immersed in a heat storage medium to release its collected energy for later use.
- U.S. Pat. No. 4,127,103 to Klank et al. teaches a heat collecting and transferring apparatus and systems adapted for use with solar energy comprises transparent plates covering a completely liquid filled chamber which has a heat absorbing layer as the internal surface of the chamber.
- the liquid is transparent and capable of absorbing, storing and/or transporting the heat energy.
- a compartmentalized tank can be employed to enhance heat collection efficiency.
- U.S. Pat. No. 4,158,356 to Klank et al. teaches a self-powered automatic tracking solar collector.
- a reflective concave surface with cylindrical symmetry and a cross-sectional parabolic configuration provides concentrated solar radiation at a transducer.
- Furnaces with an expandable fluid on either side of the focal line of the parabola connect to pistons to orient the collector.
- U.S. Pat. No. 5,680,734 to Magee teaches a solar energy control film having lenses formed therein which allow passage of light (solar radiation) through to an absorbing heat collector only for rays impinging on the structure at a low elevation angle corresponding to wintertime solar elevation at the latitude at which the structure is located.
- the film having a multiplicity of lenticular lenses formed on one side of the panel and on the opposite side of the panel a plurality of indentations appropriately in register with the lenticular lenses, further the indentations in the film are filled with an opaque liquid material.
- U.S. Pat. No. 8,547,669 to Larson et al. teaches a photovoltaic system for generating electrical power.
- the photovoltaic system includes one or more solar panels, and one or more shuttering assemblies, each of which is configured to selectively limit the quantity of light received by one or more of the solar panels.
- U.S. Pat. Application No. 2016/0161726 to Chen et al. describes a multi-spiral optical device which includes a base and a plurality of spiral channels.
- the multi-spiral optical device can form a light concentrating device.
- a fluid can be filled to or drawn from one or more of the plurality of spiral channels for switching the optical state of the multi-spiral optical device, allowing the device to be used for a light-pervious, a sheltering, or a light-concentrating state according to users' requirements.
- the present invention relates to a solar thermal collecting system that captures solar radiation and transforms it into heat energy; whereby the system provides a vessel that contains an opaque or partially opaque fluid medium that is defined by a predetermined thermal capacity; whereby the vessel comprises an at least partially transparent or translucent lid which in some applications include an integrated solar panel, which enables passage of solar radiation into the fluid medium; whereby multiple reflective parabolic mirrors integrated in the inner sidewalls of the vessel focus the solar radiation throughout the fluid medium to create hot zones therein; and whereby the heated fluid medium is transported for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly adapted to produce power from low intensity thermal sources or to transfer heat for subsequent beneficial use with minimal heat loss; and whereby the fluid medium is carried in an insulated conduit to minimize loss of heat during transport.
- a solar thermal collecting system includes a vessel defined by an inner sidewall, an outer sidewall, and an opening, the sidewalls forming a cavity, the vessel being resilient to withstand variances in pressure and temperature; an opaque or partially opaque fluid medium defined by a predetermined thermal capacity, the fluid medium disposed to at least partially fill the cavity of the vessel; a lid covering the opening in the vessel, the lid defined by an at least partially transparent or translucent lid, whereby the lid enables passage of solar radiation into the cavity; multiple mirrors/reflective surfaces integrated into the inner sidewall of the vessel, the mirrors focusing the solar radiation throughout the fluid medium to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity; an insulated conduit in communication with the vessel, the insulated conduit carrying the heated fluid medium to a second vessel for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly adapted to produce power from low intensity thermal sources, whereby the insulation minimizes the amount of heat lost during transport of the fluid medium
- Another objective is to provide a lid that is at least partially transparent or translucent, so as to optimize the amount of solar radiation entering the vessel.
- Yet another objective is to quickly transport the heated medium for storage to a boiler or energy conversion with minimal loss of heat through an insulated conduit.
- Yet another objective is to manufacture an inexpensive solar thermal collector.
- FIG. 1 illustrates a sectioned side view of an exemplary solar thermal collecting system, in accordance with an embodiment of the present invention
- FIG. 2A illustrates a top perspective view of a solar thermal collecting system, in accordance with an embodiment of the present invention
- FIG. 2B illustrates a sectioned side view of the solar thermal collecting system, the section taken along section A-A of FIG. 2A , illustrating formation of troughs that act as parabolic reflectors in the vessel, in accordance with an embodiment of the present invention
- FIG. 3A illustrates a top perspective view of another embodiment of a solar thermal collecting system, in accordance with an embodiment of the present invention
- FIG. 3B illustrates a sectioned side view of the alternative solar thermal collecting system, the section taken along section B-B of FIG. 3A , illustrating formation of parabolic reflectors in the vessel and integration of solar panel to the system, in accordance with an embodiment of the present invention
- FIG. 4 illustrates a top perspective view of multiple parabolic mirrors integrated into the inner sidewall of the vessel, in accordance with an embodiment of the present invention.
- FIG. 5 illustrates a flowchart of an exemplary method of capturing solar radiation and transforming it into heat energy, in accordance with an embodiment of the present invention.
- the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims.
- a solar thermal collecting system 100 is referenced in FIGS. 1-5 .
- the solar thermal collecting system 100 hereafter “system 100 ” is configured to enhance capturing of solar radiation 200 from the sun into a vessel 102 containing an opaque or partially opaque fluid medium 114 ; and further reflecting the solar radiation off of parabolic reflectors 116 inside the vessel 102 , such that a pluralities of parabolic foci 202 of solar radiation 200 generates hot zones throughout the fluid medium 11 .
- the heated fluid medium 114 is then used to produce power or to transfer heat for subsequent beneficial use with minimal heat loss.
- the heated fluid medium may be stored in an appropriate storage vessel or system of known construct for subsequent use to produce power. In some applications, it may be further heated in a boiler.
- a solar thermal collecting system 100 comprising: a vessel 102 defined by an inner sidewall 104 , an outer sidewall 106 , and an opening 108 , the sidewalls 104 , 106 forming a cavity 110 ; a lid 112 covering the opening 108 in the vessel 102 , the lid 112 defined by an at least partially transparent or translucent lid, whereby the lid 112 enables passage of solar radiation into the cavity 110 ; an at least partially opaque fluid medium 114 defined by a predetermined thermal capacity, wherein the fluid medium 114 at least partially fill the cavity 110 of the vessel 102 ; multiple reflectors 116 integrated into the inner sidewall 104 of the vessel 102 , the reflectors 116 a - c creates a plurality of foci 202 of solar radiation 200 throughout the fluid medium 114 that intensifies the heat being generated in the fluid medium 114 so as to create hot zones in the fluid medium 114 , the hot zones allows to heat the fluid medium 114 to the predetermined thermal capacity;
- the at least partially opaque fluid medium 114 is selected from the group consisting of: water, water and dye, water and black carbon, oil, ethylene glycol, and a liquid or gel having a thermal capacity greater than 2 J/g C°.
- the vessel 102 is made of resilient material is selected from the group consisting of a polymer or rubber to withstand variances in pressure and temperature generated in the fluid medium 114 due to absorption of the solar radiation 200 .
- the multiple reflectors 116 are parabolic mirrors.
- the vessel 102 is insulated.
- system 100 further comprises at least one solar photovoltaic panel 120 operational on the lid 112 of the vessel 102 , the solar photovoltaic panel 120 converting the solar radiation to power.
- the solar panel is a photovoltaic cell.
- system 100 further comprises a pump 124 to move the fluid medium 114 through the system 100 .
- system 100 further comprises an inflow tube 122 for carrying the fluid medium 114 to the cavity 110 of the vessel 102 .
- a solar thermal collecting system 100 comprising: a vessel 102 defined by an inner sidewall 104 , an outer sidewall 106 , and an opening 108 , the sidewalls 104 , 106 forming a cavity 110 , wherein the outer sidewall 106 of the vessel 102 is insulated; a lid 112 covering the opening 108 in the vessel 102 , the lid 112 defined by an at least partially transparent or translucent lid, whereby the lid 112 enables passage of solar radiation 200 into the cavity 110 , further the lid 112 may include integrated one or more solar panels 120 to generate electrical power directly from the solar radiation 200 ; an at least partially opaque fluid medium 114 defined by a predetermined thermal capacity; an inflow conduit 122 supplies the fluid medium 114 to at least partially fill the cavity 110 of the vessel 102 ; multiple parabolic reflectors 116 integrated into the inner sidewall 104 of the vessel 102 , the parabolic configuration of the reflectors 116 creates a parabolic focus 202 of solar radiation
- parabolic reflectors 116 are selected from the group consisting of: parabolic mirrors or parabolic surfaces coated with reflective paint or foil.
- the system 100 provides a vessel 102 that contains an opaque or partially opaque fluid medium 114 .
- the fluid medium 114 is defined by a predetermined thermal capacity that stores heat energy generated from the solar radiation 200 .
- the vessel 102 is sufficiently resilient, so as to withstand variances in pressure and temperature.
- the vessel 102 also comprises an at least partially transparent or translucent lid 112 that is configured to enable passage of solar radiation 200 into the vessel 102 ; and thereby the fluid medium 114 .
- the lid 112 may include integrated solar panels 120 to generate power directly from the solar radiation 200 .
- the inner sidewalls 104 of the vessel 102 comprise multiple reflective parabolic surfaces or parabolic mirrors 116 integrated in the inner sidewalls 104 of the vessel 102 .
- the parabolic mirrors/reflective surfaces 116 focus the solar radiation 200 throughout the fluid medium 114 to create hot zones therein.
- the parabolic configuration of the mirrors 116 creates at least one parabolic focus 202 of solar radiation that intensifies the heat being generated in the fluid 114 .
- an insulated conduit 118 transports the heated fluid medium 114 to a second vessel (not shown) for storage, or to a heat exchanger/boiler, or to an energy recovery assembly adapted to produce power from low intensity thermal sources or to transfer heat for subsequent beneficial use with minimal heat loss.
- the insulation minimizes the amount of heat lost during transport of the fluid medium 114 .
- FIG. 2A showing the top view of the system 100 comprises a vessel 102 .
- the vessel 102 provides the means for storing an opaque or partially opaque fluid medium 114 that is heated by solar radiation and then transported the heated fluid medium for several uses such as for conversion to power.
- the vessel 102 is defined by an inner sidewall 104 , an outer sidewall 106 , and an opening 108 .
- the sidewalls 104 , 106 form a cavity 110 that is sized and dimensioned to store the fluid medium 114 , wherein the system 100 may further comprising an inflow tube 122 for carrying the fluid medium 114 to the cavity 110 of the vessel 102 and an insulated outflow tube 118 for carrying the heated fluid medium 114 out of the cavity 110 of the vessel 102 . Further the system 100 comprises at least one pump 124 to move the fluid medium 114 through the system 100 .
- the vessel 102 may have a cylindrical shape, a rectangular shape, or any shape that is effective for storing the fluid medium 114 .
- the inner sidewall 104 of the vessel 102 comprises multiple rows of longitudinal ridges 119 forming pluralities of longitudinal parabolic/concave grooves, which are mirrored or painted or suitably coated with reflective surfaces to act as multiple longitudinal parabolic mirrors/reflectors 116 to create a plurality of foci 202 of solar radiation 200 throughout the fluid medium 114 that intensifies the heat being generated in the fluid medium 114 so as to create hot zones in the fluid medium 114 , the hot zones allows to heat the fluid medium 114 to the predetermined thermal capacity.
- FIG. 2B shows a transverse side cross sectional view along AA′ line, as shown in FIG. 2A illustrating the vessel 102 defined by the inner sidewall 104 , the outer sidewall 106 , and the opening 108 , wherein the sidewalls 104 , 106 form a cavity 110 , further an at least partially transparent or translucent lid 112 covers the opening 108 in the vessel 102 .
- the inner side wall 104 shows formation of plurality of parabolic reflecting surfaces 116 while the outer sidewall 106 is insulated to prevent heat loss.
- the vessel 102 is resilient to withstand variances in pressure and temperature.
- the vessel stores a fluid member with a high thermal capacity greater than 2 J/g C°, while also receiving concentrated amounts of solar radiation.
- the vessel 102 is constructed to withstand pressure generated by the expansion and evaporation of the fluid medium 114 .
- the vessel 102 is also insulated to help retain the heat generated by the fluid medium 114 .
- the insulation may be applied to the outer sidewall 106 .
- an inflow tube 122 carries the fluid medium 114 to the cavity 110 of the vessel 102 , so as to at least partially fill the vessel 102 .
- a pump 124 may also be used to force the fluid medium 114 through the inflow tube 122 , and into the cavity 110 of the vessel 102 .
- the pump 124 also works to move the fluid medium 114 through the system 100 , and discharge the fluid medium 114 from the vessel 102 for storage and/or subsequent beneficial use such as power generation.
- the inner sidewall 104 of the vessel 102 comprises multiple rows of longitudinal 119 and transverse ridges 121 forming pluralities of parabolic/concave grooves that are mirrored or painted or suitably coated with reflective surfaces to act as multiple parabolic/concave mirrors 116 to create a plurality of foci 202 of solar radiation 200 throughout the fluid medium 114 that intensifies the heat being generated in the fluid medium 114 so as to create hot zones in the fluid medium 114 , the hot zones allows to heat the fluid medium 114 to the predetermined thermal capacity.
- the opaque or partially opaque fluid medium 114 is defined by a predetermined thermal capacity.
- the thermal capacity of a fluid medium is the capability to absorb heat energy.
- the specific heat of the fluid medium 114 is the amount of heat, in calories, needed to raise the temperature of 1 gram of fluid by 1° Celsius.
- the system 100 requires a fluid medium 114 having a relatively high thermal capacity, so as to optimize heating of the fluid medium 114 contained in the vessel 102 .
- the fluid medium 114 is water, which serves as an efficient fluid medium for purposes of the present invention. Water absorbs a high amount of heat before increasing in temperature. Water also has the highest thermal capacity of all liquids, which is about 4.184 J/g C°. In some embodiments, a dye or carbon may be mixed into the water to increase the thermal absorption.
- water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy.
- the system 100 may, however, utilize other fluid mediums, including oil (thermal capacity 2.0 J/g C°), ethylene glycol (thermal capacity 2.2 J/g C°), and a liquid or gel having a thermal capacity greater than 2 J/g C°.
- FIG. 3B shows a longitudinal side cross sectional view along B-B′ line, as shown in FIG. 3A illustrating the inner side wall comprising multiple parabolic reflecting surfaces 116 while the outer sidewall 106 is insulated to prevent heat loss.
- an at least partially transparent or translucent lid 112 covers the opening 108 in the vessel 102 as shown in FIG. 3B .
- the lid 112 is configured to enable passage of solar radiation 200 into the cavity 110 for heating the fluid medium 114 .
- a solar panel 120 is operational on the lid 112 of the vessel 102 for converting the solar radiation to power.
- the solar panel 120 may include a photovoltaic cell or array.
- multiple mirrors/reflective surfaces 116 may be formed or integrated into the inner sidewall 104 of the vessel 102 .
- the mirrors/reflective surfaces 116 a , 116 b , 116 c help focus the solar radiation throughout the fluid medium 114 to create hot zones in the fluid medium 114 .
- the hot zones heating the fluid medium 114 to the predetermined thermal capacity.
- the mirrors/reflective surfaces 116 form parabolic troughs that are quite large, with the surfaces coated with reflective paint or foil.
- the mirrors/reflective surfaces 116 are arranged as parabolic mirrors that reflect solar radiation.
- the mirrors 116 may have various shapes, including circular, rectangular, and square.
- the parabolic mirrors 116 a , 116 b , 116 c have reflective surfaces that form a series of closely spaced individual circular reflective elements. Though the mirrors 116 a - c may form other shapes.
- an insulated conduit 118 that is in communication with the vessel 102 carries the heated fluid medium 114 to a second vessel (not shown) for storage and further heating ( FIG. 2A ).
- the fluid medium 114 may be carried to a heat exchanger or an energy recovery assembly that is configured to produce power from low intensity thermal sources.
- the insulation of the conduit 118 helps minimize the amount of heat loss during transport of the fluid medium 114 .
- the pump 124 is used to force the fluid medium into or out of the cavity 110 of the vessel 102 ; however other known methods and systems for moving the fluid medium 114 through the system 100 can be used in accordance with an embodiment of the present invention.
- the method 300 may include an initial Step 302 of at least partially filling a vessel by an at least partially opaque fluid medium defined by a predetermined thermal capacity, wherein the vessel is defined by an inner sidewall, an outer sidewall, and an opening, the sidewalls forming a cavity, wherein the outer sidewall of the vessel is insulated.
- the method 300 may further comprise a Step 304 of covering the opening in the vessel by a transparent lid, wherein the lid enables passage of solar radiation into the cavity, further the lid may include integrated one or more solar panels to generate electrical power directly from the solar radiation.
- a Step 306 includes exposing the at least partially opaque fluid medium to the solar radiation to heat the fluid medium.
- Step 308 comprises intensifying the heat generated in the fluid medium by integrating multiple parabolic reflectors into the inner sidewall of the vessel, wherein the parabolic configuration of the reflectors creates a parabolic focus of solar radiation throughout the fluid medium that intensifies the heat being generated in the fluid medium so as to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity.
- a Step 310 comprises supplying the heated fluid medium through a conduit to a second vessel for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly, wherein the conduit is insulated to minimize the amount of heat loss during transport of the fluid medium.
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Abstract
A solar thermal collecting system captures solar radiation into a vessel containing an opaque or partially opaque fluid medium. The solar radiation is reflected and intensified using interior parabolic reflectors inside the vessel to generate hot zones throughout the fluid medium; and the generated heat in the fluid medium is transported to a separate system designed to utilize the heat with minimal heat loss. The system of the present invention comprises a vessel that contains the fluid medium. An at least partially transparent or translucent lid enables passage of solar radiation into the vessel. The lid may have integrated solar panels to generate power from solar radiation. Multiple reflective parabolic reflectors integrated in the vessel focus solar radiation throughout the fluid medium to create hot zones that intensifies heating the fluid medium. The vessel is resilient to withstand variances in pressure and temperature. After fluid medium absorbs heat, an insulated conduit transports the heated fluid medium for storage or other beneficial uses such as conversion to power with minimal heat loss.
Description
- This application is a divisional patent application of U.S. Ser. No. 16/038,917 entitled “Solar Thermal Collecting System”, filed on Jul. 18, 20218, which claims priority from U.S. Provisional Application Ser. No. 62/540,234, entitled “Solar Thermal Collecting System”, filed on Aug. 2, 2017, which applications are hereby incorporated herein by reference in their entirety.
- The present invention relates generally to a solar thermal collecting system. More so, the present invention relates to a solar thermal collecting system that captures solar radiation and transforms it into heat energy.
- Various devices have been developed for collecting solar heat in order to render it usable either directly or as a supplement to fuel energy for heating a fluid medium. Many of the known devices would provide radiation-receptive panels inclined across the path of sunlight, together with a means for collecting heat absorbed by the panels, or radiation passed through them, in a liquid carrying the heat away for utilization.
- Those skilled in the art will recognize that solar thermal collectors absorb radiant energy of sunlight and transfer it into thermal energy, then using the thermal energy to heat water or a heat transfer medium for subsequent applications. The solar thermal collector is generally configured with a solar selective coating for absorbing solar radiant energy and converting the solar radiant energy into thermal energy.
- Numerous attempts have been made to develop a solar thermal collecting system that captures solar radiation and transforms it into heat energy. Even though these innovations may be suitable for the specific purposes to which they address, however, they would not be suitable for the purposes of the present invention.
- For example, U.S. Pat. No. 2,133,649 to Abbot discloses a solar heater apparatus that may be used for the production of power in steam engines, wherein the apparatus comprises a frame, a ray-collector and a ray-absorber containing an opaque liquid mounted on said frame.
- U.S. Pat. No. 2,182,222 to Courtis et al. teaches an apparatus for collecting and utilizing radiant solar energy. The apparatus comprises an adjustable parabolic reflector, an insulated tube rigidly supported in the focal line of the reflector, such that the relationship of the tube with respect to the focal line of the reflector remains unchanged, a means for circulating energy collecting fluid through said tube and a heat exchanger for receiving the circulated fluid and for extracting heat therefrom.
- U.S. Pat. No. 4,080,954 to De Wilde et al. describes a solar collector apparatus comprising a panel of blackened heat absorbing glass tubes connected in series, each tube having a cylindrical glass jacket with a half circular concave cylindrical reflector on its inner surface, wherein each glass tube lies in the focal plane of the reflector, thereby allowing it to circulate heat storing fluid in and out of the jacket.
- U.S. Pat. Nos. 4,096,861 and 4,217,885 to Bowles disclose an apparatus for collecting solar heat. The apparatus comprises a thin receptor panel adapted to be supported at an inclination across the path of sunlight directly into a layer of liquid held against and flowable only upwardly along the panel in shallow channels extending between upper and lower plenum spaces in a receptor chamber. The total volume of liquid filling the system is small in relation to the exposed receptor surface area that little sun time is lost in bringing the system to a relatively high temperature for delivery of the collected heat.
- U.S. Pat. No. 4,098,265 to Gravely describes a solar energy collector which utilizes a shallow, open-topped, foamed, integrally skinned or otherwise sealed plastic vessel with a multiple layer, light transmissive cover. An opaque, preferably black, liquid is utilized as the absorbing material which is circulated in direct contact with the cover and then to a heat exchanger immersed in a heat storage medium to release its collected energy for later use.
- U.S. Pat. No. 4,127,103 to Klank et al. teaches a heat collecting and transferring apparatus and systems adapted for use with solar energy comprises transparent plates covering a completely liquid filled chamber which has a heat absorbing layer as the internal surface of the chamber. The liquid is transparent and capable of absorbing, storing and/or transporting the heat energy. A compartmentalized tank can be employed to enhance heat collection efficiency.
- U.S. Pat. No. 4,158,356 to Klank et al. teaches a self-powered automatic tracking solar collector. A reflective concave surface with cylindrical symmetry and a cross-sectional parabolic configuration provides concentrated solar radiation at a transducer. Furnaces with an expandable fluid on either side of the focal line of the parabola connect to pistons to orient the collector.
- U.S. Pat. No. 5,680,734 to Magee teaches a solar energy control film having lenses formed therein which allow passage of light (solar radiation) through to an absorbing heat collector only for rays impinging on the structure at a low elevation angle corresponding to wintertime solar elevation at the latitude at which the structure is located. The film having a multiplicity of lenticular lenses formed on one side of the panel and on the opposite side of the panel a plurality of indentations appropriately in register with the lenticular lenses, further the indentations in the film are filled with an opaque liquid material.
- U.S. Pat. No. 8,547,669 to Larson et al. teaches a photovoltaic system for generating electrical power. The photovoltaic system includes one or more solar panels, and one or more shuttering assemblies, each of which is configured to selectively limit the quantity of light received by one or more of the solar panels.
- U.S. Pat. Application No. 2016/0161726 to Chen et al. describes a multi-spiral optical device which includes a base and a plurality of spiral channels. The multi-spiral optical device can form a light concentrating device. In addition, a fluid can be filled to or drawn from one or more of the plurality of spiral channels for switching the optical state of the multi-spiral optical device, allowing the device to be used for a light-pervious, a sheltering, or a light-concentrating state according to users' requirements.
- It is apparent now that numerous innovations that are adapted to a solar thermal collecting method and system that captures solar radiation and transforms it into heat energy have been developed in the prior art that are adequate for various purposes. Furthermore, even though these innovations may be suitable for the specific purposes to which they address, accordingly, they would not be suitable for the purposes of the present invention as heretofore described. Thus a solar thermal collecting system that uses at least several parabolic reflectors in a predetermined arrangement so as to optimize capture of solar radiation and transforming it into heat energy is needed.
- The present invention relates to a solar thermal collecting system that captures solar radiation and transforms it into heat energy; whereby the system provides a vessel that contains an opaque or partially opaque fluid medium that is defined by a predetermined thermal capacity; whereby the vessel comprises an at least partially transparent or translucent lid which in some applications include an integrated solar panel, which enables passage of solar radiation into the fluid medium; whereby multiple reflective parabolic mirrors integrated in the inner sidewalls of the vessel focus the solar radiation throughout the fluid medium to create hot zones therein; and whereby the heated fluid medium is transported for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly adapted to produce power from low intensity thermal sources or to transfer heat for subsequent beneficial use with minimal heat loss; and whereby the fluid medium is carried in an insulated conduit to minimize loss of heat during transport.
- According to an aspect of the present invention, a solar thermal collecting system, includes a vessel defined by an inner sidewall, an outer sidewall, and an opening, the sidewalls forming a cavity, the vessel being resilient to withstand variances in pressure and temperature; an opaque or partially opaque fluid medium defined by a predetermined thermal capacity, the fluid medium disposed to at least partially fill the cavity of the vessel; a lid covering the opening in the vessel, the lid defined by an at least partially transparent or translucent lid, whereby the lid enables passage of solar radiation into the cavity; multiple mirrors/reflective surfaces integrated into the inner sidewall of the vessel, the mirrors focusing the solar radiation throughout the fluid medium to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity; an insulated conduit in communication with the vessel, the insulated conduit carrying the heated fluid medium to a second vessel for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly adapted to produce power from low intensity thermal sources, whereby the insulation minimizes the amount of heat lost during transport of the fluid medium.
- In view of the foregoing, it is therefore an objective of the present invention to provide a solar thermal collecting system that enhances the heat generated in the vessel through use of multiple parabolic mirrors that focus the solar radiation onto the fluid medium to create hot zones.
- Another objective is to provide a lid that is at least partially transparent or translucent, so as to optimize the amount of solar radiation entering the vessel.
- Yet another objective is to quickly transport the heated medium for storage to a boiler or energy conversion with minimal loss of heat through an insulated conduit.
- Yet another objective is to manufacture an inexpensive solar thermal collector.
- Other objectives and aspects of the invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the features in accordance with embodiments of the invention. The summary is not intended to limit the scope of the invention, which is defined solely by the claims attached hereto.
- The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
-
FIG. 1 illustrates a sectioned side view of an exemplary solar thermal collecting system, in accordance with an embodiment of the present invention; -
FIG. 2A illustrates a top perspective view of a solar thermal collecting system, in accordance with an embodiment of the present invention; -
FIG. 2B illustrates a sectioned side view of the solar thermal collecting system, the section taken along section A-A ofFIG. 2A , illustrating formation of troughs that act as parabolic reflectors in the vessel, in accordance with an embodiment of the present invention; -
FIG. 3A illustrates a top perspective view of another embodiment of a solar thermal collecting system, in accordance with an embodiment of the present invention; -
FIG. 3B illustrates a sectioned side view of the alternative solar thermal collecting system, the section taken along section B-B ofFIG. 3A , illustrating formation of parabolic reflectors in the vessel and integration of solar panel to the system, in accordance with an embodiment of the present invention; -
FIG. 4 illustrates a top perspective view of multiple parabolic mirrors integrated into the inner sidewall of the vessel, in accordance with an embodiment of the present invention; and -
FIG. 5 illustrates a flowchart of an exemplary method of capturing solar radiation and transforming it into heat energy, in accordance with an embodiment of the present invention. - Like reference numerals refer to like parts throughout the various views of the drawings.
- The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper,” “lower,” “left,” “rear,” “right,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as oriented in
FIG. 1 . Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the inventive concepts defined in the appended claims. Specific dimensions and other physical characteristics relating to the embodiments disclosed herein are therefore not to be considered as limiting, unless the claims expressly state otherwise. - A solar
thermal collecting system 100 is referenced inFIGS. 1-5 . The solarthermal collecting system 100, hereafter “system 100” is configured to enhance capturing ofsolar radiation 200 from the sun into avessel 102 containing an opaque or partially opaque fluid medium 114; and further reflecting the solar radiation off ofparabolic reflectors 116 inside thevessel 102, such that a pluralities ofparabolic foci 202 ofsolar radiation 200 generates hot zones throughout the fluid medium 11. Theheated fluid medium 114 is then used to produce power or to transfer heat for subsequent beneficial use with minimal heat loss. In some applications, the heated fluid medium may be stored in an appropriate storage vessel or system of known construct for subsequent use to produce power. In some applications, it may be further heated in a boiler. - According to one aspect of the present invention, a solar thermal collecting system 100 comprising: a vessel 102 defined by an inner sidewall 104, an outer sidewall 106, and an opening 108, the sidewalls 104, 106 forming a cavity 110; a lid 112 covering the opening 108 in the vessel 102, the lid 112 defined by an at least partially transparent or translucent lid, whereby the lid 112 enables passage of solar radiation into the cavity 110; an at least partially opaque fluid medium 114 defined by a predetermined thermal capacity, wherein the fluid medium 114 at least partially fill the cavity 110 of the vessel 102; multiple reflectors 116 integrated into the inner sidewall 104 of the vessel 102, the reflectors 116 a-c creates a plurality of foci 202 of solar radiation 200 throughout the fluid medium 114 that intensifies the heat being generated in the fluid medium 114 so as to create hot zones in the fluid medium 114, the hot zones allows to heat the fluid medium 114 to the predetermined thermal capacity; and an insulated outlet conduit 118 in communication with the vessel 102, the insulated outlet conduit 118 carrying the heated fluid medium to a second vessel (not shown) for storage, or to a heat exchanger (not shown), or a boiler (not shown) or to an energy recovery assembly (not shown).
- In another aspect, the at least partially opaque fluid medium 114 is selected from the group consisting of: water, water and dye, water and black carbon, oil, ethylene glycol, and a liquid or gel having a thermal capacity greater than 2 J/g C°.
- In another aspect, the
vessel 102 is made of resilient material is selected from the group consisting of a polymer or rubber to withstand variances in pressure and temperature generated in thefluid medium 114 due to absorption of thesolar radiation 200. - In another aspect, the
multiple reflectors 116 are parabolic mirrors. - In another aspect, the
vessel 102 is insulated. - In another aspect, the
system 100 further comprises at least one solarphotovoltaic panel 120 operational on thelid 112 of thevessel 102, the solarphotovoltaic panel 120 converting the solar radiation to power. - In another aspect, the solar panel is a photovoltaic cell.
- In another aspect, the
system 100 further comprises apump 124 to move thefluid medium 114 through thesystem 100. - In another aspect, the
system 100 further comprises aninflow tube 122 for carrying thefluid medium 114 to thecavity 110 of thevessel 102. - In another aspect, a solar thermal collecting system 100, the system 100 comprising: a vessel 102 defined by an inner sidewall 104, an outer sidewall 106, and an opening 108, the sidewalls 104, 106 forming a cavity 110, wherein the outer sidewall 106 of the vessel 102 is insulated; a lid 112 covering the opening 108 in the vessel 102, the lid 112 defined by an at least partially transparent or translucent lid, whereby the lid 112 enables passage of solar radiation 200 into the cavity 110, further the lid 112 may include integrated one or more solar panels 120 to generate electrical power directly from the solar radiation 200; an at least partially opaque fluid medium 114 defined by a predetermined thermal capacity; an inflow conduit 122 supplies the fluid medium 114 to at least partially fill the cavity 110 of the vessel 102; multiple parabolic reflectors 116 integrated into the inner sidewall 104 of the vessel 102, the parabolic configuration of the reflectors 116 creates a parabolic focus 202 of solar radiation 200 throughout the fluid medium 114 that intensifies the heat being generated in the fluid medium 114 so as to create hot zones in the fluid medium 114, the hot zones allows to heat the fluid medium 114 to the predetermined thermal capacity; and an insulated outlet conduit 118 in communication with the vessel 102, the insulated outlet conduit 118 carrying the heated fluid medium 114 to a second vessel for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly.
- In another aspect, the
parabolic reflectors 116 are selected from the group consisting of: parabolic mirrors or parabolic surfaces coated with reflective paint or foil. - As referenced in
FIG. 1 , thesystem 100 provides avessel 102 that contains an opaque or partiallyopaque fluid medium 114. Thefluid medium 114 is defined by a predetermined thermal capacity that stores heat energy generated from thesolar radiation 200. Thevessel 102 is sufficiently resilient, so as to withstand variances in pressure and temperature. - The
vessel 102 also comprises an at least partially transparent ortranslucent lid 112 that is configured to enable passage ofsolar radiation 200 into thevessel 102; and thereby thefluid medium 114. In alternative embodiments, thelid 112 may include integratedsolar panels 120 to generate power directly from thesolar radiation 200. - The
inner sidewalls 104 of thevessel 102 comprise multiple reflective parabolic surfaces orparabolic mirrors 116 integrated in theinner sidewalls 104 of thevessel 102. The parabolic mirrors/reflective surfaces 116 focus thesolar radiation 200 throughout thefluid medium 114 to create hot zones therein. The parabolic configuration of themirrors 116 creates at least oneparabolic focus 202 of solar radiation that intensifies the heat being generated in thefluid 114. - After absorbing a predetermined quantity of heat, an
insulated conduit 118 transports the heated fluid medium 114 to a second vessel (not shown) for storage, or to a heat exchanger/boiler, or to an energy recovery assembly adapted to produce power from low intensity thermal sources or to transfer heat for subsequent beneficial use with minimal heat loss. The insulation minimizes the amount of heat lost during transport of thefluid medium 114. - According to an embodiment of the present invention as illustrated in
FIG. 2A , showing the top view of thesystem 100 comprises avessel 102. Thevessel 102 provides the means for storing an opaque or partially opaque fluid medium 114 that is heated by solar radiation and then transported the heated fluid medium for several uses such as for conversion to power. Thevessel 102 is defined by aninner sidewall 104, anouter sidewall 106, and anopening 108. Thesidewalls cavity 110 that is sized and dimensioned to store thefluid medium 114, wherein thesystem 100 may further comprising aninflow tube 122 for carrying thefluid medium 114 to thecavity 110 of thevessel 102 and aninsulated outflow tube 118 for carrying the heated fluid medium 114 out of thecavity 110 of thevessel 102. Further thesystem 100 comprises at least onepump 124 to move thefluid medium 114 through thesystem 100. In some embodiments, thevessel 102 may have a cylindrical shape, a rectangular shape, or any shape that is effective for storing thefluid medium 114. Further according to an exemplary embodiment, theinner sidewall 104 of thevessel 102 comprises multiple rows oflongitudinal ridges 119 forming pluralities of longitudinal parabolic/concave grooves, which are mirrored or painted or suitably coated with reflective surfaces to act as multiple longitudinal parabolic mirrors/reflectors 116 to create a plurality offoci 202 ofsolar radiation 200 throughout thefluid medium 114 that intensifies the heat being generated in thefluid medium 114 so as to create hot zones in thefluid medium 114, the hot zones allows to heat thefluid medium 114 to the predetermined thermal capacity. - As
FIG. 2B shows a transverse side cross sectional view along AA′ line, as shown inFIG. 2A illustrating thevessel 102 defined by theinner sidewall 104, theouter sidewall 106, and theopening 108, wherein thesidewalls cavity 110, further an at least partially transparent ortranslucent lid 112 covers theopening 108 in thevessel 102. Theinner side wall 104 shows formation of plurality of parabolic reflectingsurfaces 116 while theouter sidewall 106 is insulated to prevent heat loss. Thevessel 102 is resilient to withstand variances in pressure and temperature. The vessel stores a fluid member with a high thermal capacity greater than 2 J/g C°, while also receiving concentrated amounts of solar radiation. This resilience may be possible through construction with a flexible material, such as a polymer or rubber. Thus, thevessel 102 is constructed to withstand pressure generated by the expansion and evaporation of thefluid medium 114. Thevessel 102 is also insulated to help retain the heat generated by thefluid medium 114. The insulation may be applied to theouter sidewall 106. - According to another embodiment of the present invention as shown in the sectioned view of the
system 100 inFIGS. 3A and 3B , aninflow tube 122 carries thefluid medium 114 to thecavity 110 of thevessel 102, so as to at least partially fill thevessel 102. Apump 124 may also be used to force thefluid medium 114 through theinflow tube 122, and into thecavity 110 of thevessel 102. Thepump 124 also works to move thefluid medium 114 through thesystem 100, and discharge the fluid medium 114 from thevessel 102 for storage and/or subsequent beneficial use such as power generation. Further theinner sidewall 104 of thevessel 102 comprises multiple rows of longitudinal 119 andtransverse ridges 121 forming pluralities of parabolic/concave grooves that are mirrored or painted or suitably coated with reflective surfaces to act as multiple parabolic/concave mirrors 116 to create a plurality offoci 202 ofsolar radiation 200 throughout thefluid medium 114 that intensifies the heat being generated in thefluid medium 114 so as to create hot zones in thefluid medium 114, the hot zones allows to heat thefluid medium 114 to the predetermined thermal capacity. - The opaque or partially opaque fluid medium 114 is defined by a predetermined thermal capacity. Those skilled in the art will recognize that the thermal capacity of a fluid medium is the capability to absorb heat energy. And that the specific heat of the
fluid medium 114 is the amount of heat, in calories, needed to raise the temperature of 1 gram of fluid by 1° Celsius. Thus, thesystem 100 requires afluid medium 114 having a relatively high thermal capacity, so as to optimize heating of thefluid medium 114 contained in thevessel 102. - In one embodiment, the
fluid medium 114 is water, which serves as an efficient fluid medium for purposes of the present invention. Water absorbs a high amount of heat before increasing in temperature. Water also has the highest thermal capacity of all liquids, which is about 4.184 J/g C°. In some embodiments, a dye or carbon may be mixed into the water to increase the thermal absorption. - Those skilled in the art will recognize that water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy. The
system 100 may, however, utilize other fluid mediums, including oil (thermal capacity 2.0 J/g C°), ethylene glycol (thermal capacity 2.2 J/g C°), and a liquid or gel having a thermal capacity greater than 2 J/g C°. - As
FIG. 3B shows a longitudinal side cross sectional view along B-B′ line, as shown inFIG. 3A illustrating the inner side wall comprising multiple parabolic reflectingsurfaces 116 while theouter sidewall 106 is insulated to prevent heat loss. In order to optimize the amount ofsolar radiation 200 striking thefluid medium 114, an at least partially transparent ortranslucent lid 112 covers theopening 108 in thevessel 102 as shown inFIG. 3B . Thelid 112 is configured to enable passage ofsolar radiation 200 into thecavity 110 for heating thefluid medium 114. In one embodiment, asolar panel 120 is operational on thelid 112 of thevessel 102 for converting the solar radiation to power. Thesolar panel 120 may include a photovoltaic cell or array. - According to another exemplary embodiment of the present invention as illustrated in
FIG. 4 , multiple mirrors/reflective surfaces 116 may be formed or integrated into theinner sidewall 104 of thevessel 102. The mirrors/reflective surfaces 116 a, 116 b, 116 c help focus the solar radiation throughout thefluid medium 114 to create hot zones in thefluid medium 114. The hot zones heating thefluid medium 114 to the predetermined thermal capacity. In some instances the mirrors/reflective surfaces 116 form parabolic troughs that are quite large, with the surfaces coated with reflective paint or foil. - In one embodiment, the mirrors/
reflective surfaces 116 are arranged as parabolic mirrors that reflect solar radiation. Themirrors 116 may have various shapes, including circular, rectangular, and square. In another embodiment shown inFIG. 4 , the parabolic mirrors 116 a, 116 b, 116 c have reflective surfaces that form a series of closely spaced individual circular reflective elements. Though themirrors 116 a-c may form other shapes. - After the
fluid medium 114 is heated to an optimal temperature, aninsulated conduit 118 that is in communication with thevessel 102 carries the heated fluid medium 114 to a second vessel (not shown) for storage and further heating (FIG. 2A ). Or in other embodiments, thefluid medium 114 may be carried to a heat exchanger or an energy recovery assembly that is configured to produce power from low intensity thermal sources. The insulation of theconduit 118 helps minimize the amount of heat loss during transport of thefluid medium 114. Thepump 124 is used to force the fluid medium into or out of thecavity 110 of thevessel 102; however other known methods and systems for moving thefluid medium 114 through thesystem 100 can be used in accordance with an embodiment of the present invention. - According to another aspect of the present invention as shown in
FIG. 5 that illustrates a flowchart of anexemplary method 300 of capturing solar radiation and transforming it into heat energy. Themethod 300 may include aninitial Step 302 of at least partially filling a vessel by an at least partially opaque fluid medium defined by a predetermined thermal capacity, wherein the vessel is defined by an inner sidewall, an outer sidewall, and an opening, the sidewalls forming a cavity, wherein the outer sidewall of the vessel is insulated. Themethod 300 may further comprise aStep 304 of covering the opening in the vessel by a transparent lid, wherein the lid enables passage of solar radiation into the cavity, further the lid may include integrated one or more solar panels to generate electrical power directly from the solar radiation. AStep 306 includes exposing the at least partially opaque fluid medium to the solar radiation to heat the fluid medium. Step 308 comprises intensifying the heat generated in the fluid medium by integrating multiple parabolic reflectors into the inner sidewall of the vessel, wherein the parabolic configuration of the reflectors creates a parabolic focus of solar radiation throughout the fluid medium that intensifies the heat being generated in the fluid medium so as to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity. AStep 310 comprises supplying the heated fluid medium through a conduit to a second vessel for storage, or to a heat exchanger, or a boiler or to an energy recovery assembly, wherein the conduit is insulated to minimize the amount of heat loss during transport of the fluid medium. - These and other advantages of the invention will be further understood and appreciated by those skilled in the art by reference to the following written specification, claims and appended drawings.
- Because many modifications, variations, and changes in detail can be made to the described preferred embodiments of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalence.
Claims (17)
1. A method of capturing solar radiation and transforming it into heat energy, the method comprising:
at least partially filling a vessel with an at least partially opaque fluid medium defined by a predetermined thermal capacity, wherein the vessel is defined by an inner sidewall, an outer sidewall, and an opening, the inner and outer sidewalls forming a cavity, wherein the outer sidewall of the vessel is insulated;
covering the opening in the vessel by a transparent lid, wherein the lid enables passage of solar radiation into the cavity, further the lid may include integrated one or more solar panels to generate electrical power directly from the solar radiation;
exposing the at least partially opaque fluid medium to the solar radiation to heat the fluid medium;
intensifying the heat generated in the fluid medium by integrating multiple parabolic reflectors into the inner sidewall of the vessel, wherein the parabolic configuration of the reflectors creates one or more parabolic foci of solar radiation throughout the fluid medium that intensifies the heat being generated in the fluid medium so as to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity; and
supplying the heated fluid medium through a conduit to a second vessel for storage, wherein the conduit is insulated to minimize the amount of heat loss during transport of the fluid medium.
2. The method of claim 1 , wherein the at least partially opaque fluid medium is selected from the group consisting of: water, water and dye, water and black carbon, oil, ethylene glycol, and a liquid or gel having thermal capacity greater than 2 J/g C°.
3. The method of claim 1 , wherein the vessel is made of resilient material capable of withstanding variances in pressure and temperature generated in the fluid medium because of absorption of the solar radiation.
4. The method of claim 1 , wherein the solar panel is a photovoltaic cell.
5. The method of claim 1 , wherein the fluid medium is moved through the system by using at least one pump.
6. The method of claim 1 , wherein the method further comprises heating the fluid medium to a desired level in a boiler.
7. The method of claim 1 , wherein the plurality of reflectors comprise parabolic mirrors.
8. The method of claim 1 , wherein the vessel is insulated.
9. A method of capturing solar radiation and transforming it into heat energy, the method comprising:
at least partially filling a vessel with an at least partially opaque fluid medium comprising water mixed with carbon or dye so as to increase thermal absorption by increasing the thermal capacity of the medium to greater than 4.2 J/g C°, wherein the vessel is defined by an inner sidewall, an outer sidewall, and an opening, the sidewalls inner and outer sidewalls forming a cavity, wherein the outer sidewall of the vessel is insulated;
covering the opening in the vessel by a transparent lid, wherein the lid enables passage of solar radiation into the cavity, further the lid may include integrated one or more solar panels to generate electrical power directly from the solar radiation;
exposing the at least partially opaque fluid medium to the solar radiation to heat the fluid medium;
intensifying the heat generated in the fluid medium by integrating multiple parabolic reflectors into the inner sidewall of the vessel, wherein the parabolic configuration of the reflectors creates one or more parabolic foci of solar radiation throughout the fluid medium that intensifies the heat being generated in the fluid medium so as to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity; and
supplying the heated fluid medium through a conduit to a second vessel for storage, wherein the conduit is insulated to minimize the amount of heat loss during transport of the fluid medium.
10. The method of claim 9 , wherein the vessel is made of resilient material capable of withstanding variances in pressure and temperature generated in the fluid medium because of absorption of the solar radiation.
11. The method of claim 9 , wherein the solar panel is a photovoltaic cell.
12. The method of claim 9 , wherein the fluid medium is moved through the system by using at least one pump.
13. The method of claim 9 , wherein the method further comprises heating the fluid medium to a desired level in a boiler.
14. A method of capturing solar radiation and transforming it into heat energy, the method comprising:
at least partially filling a vessel with an at least partially opaque fluid medium defined by a predetermined thermal capacity, wherein the vessel is defined by an inner sidewall, an outer sidewall, and an opening, the inner and outer sidewalls forming a cavity, wherein the outer sidewall of the vessel is insulated;
covering the opening in the vessel by a transparent lid, wherein the lid enables passage of solar radiation into the cavity, further the lid may include integrated one or more solar panels to generate electrical power directly from the solar radiation;
exposing the at least partially opaque fluid medium to the solar radiation to heat the fluid medium;
intensifying the heat generated in the fluid medium by integrating multiple parabolic reflectors constructed of or coated with reflective material comprising reflective paint or foil, into the inner sidewall of the vessel, wherein the parabolic configuration of the reflectors creates one or more parabolic foci of solar radiation throughout the fluid medium that intensifies the heat being generated in the fluid medium so as to create hot zones in the fluid medium, the hot zones heating the fluid medium to the predetermined thermal capacity; and
supplying the heated fluid medium through a conduit to a second vessel for storage, wherein the conduit is insulated to minimize the amount of heat loss during transport of the fluid medium.
15. The method of claim 14 wherein the partially opaque fluid medium comprises water mixed with carbon or dye so as to increase thermal absorption by increasing the thermal capacity of the medium to greater than 4.2 J/g C°.
16. The method of claim 14 , wherein the solar panel comprises a photovoltaic cell.
17. The method of claim 14 , wherein the vessel is made of a resilient material selected from capable of withstanding variances in pressure and temperature generated in the fluid medium because of absorption of the solar radiation.
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US17/061,081 US20210018223A1 (en) | 2017-08-02 | 2020-10-01 | Method for collecting solar radiation and transforming it into heat energy |
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US201762540234P | 2017-08-02 | 2017-08-02 | |
US16/038,917 US10823459B1 (en) | 2017-08-02 | 2018-07-18 | Solar thermal collecting system |
US17/061,081 US20210018223A1 (en) | 2017-08-02 | 2020-10-01 | Method for collecting solar radiation and transforming it into heat energy |
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US16/038,917 Division US10823459B1 (en) | 2017-08-02 | 2018-07-18 | Solar thermal collecting system |
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US20210018223A1 true US20210018223A1 (en) | 2021-01-21 |
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US16/038,917 Active 2039-01-28 US10823459B1 (en) | 2017-08-02 | 2018-07-18 | Solar thermal collecting system |
US17/061,081 Abandoned US20210018223A1 (en) | 2017-08-02 | 2020-10-01 | Method for collecting solar radiation and transforming it into heat energy |
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US5411015A (en) * | 1992-09-07 | 1995-05-02 | Collins Starnes Associates Limited | Radiation collectors |
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US2133649A (en) | 1935-03-27 | 1938-10-18 | Abbot Charles Greeley | Solar heater |
US2182222A (en) | 1936-11-23 | 1939-12-05 | Stuart A Courtis | Solar heater |
US4096861A (en) | 1976-04-12 | 1978-06-27 | Bowles Vernon O | Solar heat collection |
US4217885A (en) | 1976-04-12 | 1980-08-19 | Solartrap, Inc. | Solar heat collection |
US4080954A (en) | 1976-04-23 | 1978-03-28 | Wilde Gerrit De | Solar collector apparatus |
US4098265A (en) | 1976-05-10 | 1978-07-04 | Gravely Ben T | Solar energy collector |
JPS5323224A (en) | 1976-08-16 | 1978-03-03 | Hitachi Ltd | Solid pickup unit |
US4127103A (en) | 1976-12-21 | 1978-11-28 | Klank Benno E O | Heat collecting and transferring apparatus and systems adapted for use with solar energy |
US4158356A (en) | 1977-02-22 | 1979-06-19 | Wininger David V | Self-powered tracking solar collector |
FR2423731A1 (en) * | 1978-02-16 | 1979-11-16 | Vironneau Pierre | MODULAR SOLAR COLLECTOR |
US5680734A (en) | 1990-05-18 | 1997-10-28 | University Of Arkansas N.A. | Solar energy control film and process |
US5275150A (en) * | 1992-08-26 | 1994-01-04 | Herman Lai | Solar collector |
US7173179B2 (en) * | 2002-07-16 | 2007-02-06 | The Board Of Trustees Of The University Of Arkansas | Solar co-generator |
KR101018475B1 (en) * | 2009-08-28 | 2011-03-02 | 기재권 | Water storage tank having solar voltaic generator |
US8547669B2 (en) | 2011-01-12 | 2013-10-01 | Schneider Electric USA, Inc. | Arc fault mitigation for photovoltaic systems |
IL224132A (en) * | 2013-01-08 | 2017-04-30 | Harel Alex | Supplying and heating water system comprising flexible tank and heating system |
US20140251414A1 (en) * | 2013-03-11 | 2014-09-11 | Richard Lyle Shown | Hybrid solar thermal and photovoltaic system with thermal energy capture subsystem |
TW201621242A (en) | 2014-12-03 | 2016-06-16 | Metal Ind Res & Dev Ct | Multi-spiral optical device |
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2018
- 2018-07-18 US US16/038,917 patent/US10823459B1/en active Active
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- 2020-10-01 US US17/061,081 patent/US20210018223A1/en not_active Abandoned
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US5411015A (en) * | 1992-09-07 | 1995-05-02 | Collins Starnes Associates Limited | Radiation collectors |
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