WO2023139465A1 - Vertical-axis wind turbine with axial airflows exploiting duct - Google Patents

Vertical-axis wind turbine with axial airflows exploiting duct Download PDF

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Publication number
WO2023139465A1
WO2023139465A1 PCT/IB2023/050358 IB2023050358W WO2023139465A1 WO 2023139465 A1 WO2023139465 A1 WO 2023139465A1 IB 2023050358 W IB2023050358 W IB 2023050358W WO 2023139465 A1 WO2023139465 A1 WO 2023139465A1
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WO
WIPO (PCT)
Prior art keywords
conversion
electric energy
collector
vertical
wind energy
Prior art date
Application number
PCT/IB2023/050358
Other languages
French (fr)
Inventor
Giuseppe Cosentino
Alessandro Leopoldo RUSSO
Alfonso COPPOLA
Original Assignee
Rithema S.R.L.S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rithema S.R.L.S. filed Critical Rithema S.R.L.S.
Publication of WO2023139465A1 publication Critical patent/WO2023139465A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/20—Heat transfer, e.g. cooling
    • F05B2260/24—Heat transfer, e.g. cooling for draft enhancement in chimneys, using solar or other heat sources

Definitions

  • the present invention relates to a vertical-axis wind turbine , and in particular to a vertical-axis wind turbine configured to exploit also vertical airflows , as well as to recover energy from waste heat sources .
  • the present invention relates to a vertical-axis wind turbine provided with axial airflows exploiting duct .
  • the present invention is aimed at developing a technical measure which involves the supporting structure of a vertical-axis wind turbine in the whole ef ficiency of the same turbine , by exploiting ascending currents , which can be caused by height di f ferences , by solar irradiation or by the presence of waste heat sources .
  • An ascending current is an air mass moving upwards due to the density di f ference caused by the temperature di f ference , or because it is pushed by a pressure di f ference .
  • Hot air has lower density than cold one , so it weighs less in case of equal volume , hence i f an air mass is heated (by the sun or other heat sources ) it becomes lighter and begins to go up by convection .
  • the present invention provides a supporting structure for a vertical-axis wind turbine , configured to exploit ascending currents , conveying them along the vertical axis o f the turbine , in order that the kinetic energy is then converted in mechanical energy available on the rotation shaft of the same turbine .
  • the technical problem solved by the present invention is in particular that of creating an ascending current which can be exploited by the same turbine , by means of the introduction of suitable technical measures in the reali zation of the supporting structure , also exploiting solar irradiation and hori zontal winds , so that a bottom- up axial flow is generated that contributes to the production of energy by the vertical-axis wind turbine .
  • the function of a wind tower is not only the provision of a supporting structure , but also to allow the turbine to be positioned well on the soil level , so that it is possible to exploit the wind fastest speeds , which are present at higher heights .
  • the supporting structures known at the state of the art are used for heightsupporting wind turbines , and are not configured to contribute to convey the wind on the aerodynamical surfaces of the turbine in order to increase its ef ficiency .
  • the structure for the vertical-axis wind turbine comprises a duct for exploiting axial airflows and a supporting base configured to heat , pre ferably but not limitingly exploiting solar irradiation, the air at the base of the supporting structure , so to generate an axial flow which is then conveyed by the supporting structure towards the axis of the turbine .
  • the device comprises at least another propeller ( 3 ) , keyed on the vertical rotation axis of the turbine and configured to convert the kinetic energy of the ascending current in mechanical energy, and to contribute to the trans formation of the wind kinetic energy in power available on the shaft , thus increasing the vertical-axis wind turbine ef ficiency .
  • the invention is well intended to be used for the realization of a vertical-axis wind turbine.
  • the present invention reaches the prefixed aims since it is a device for conversion of wind energy in electric energy, comprising:
  • a supporting vertical structure (1) shaped as an open hollow circular sectioned tube at its upper and lower base and provided with supporting feet (9) fastening said structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4) , hinged at the axis of said supporting vertical structure (1) ,
  • - motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy, characterized in that it further comprises a solar collector with variable section (7) , shaped as axial-symmetrical solid with bottom-up decreasing diameter, said solar collector being arranged coaxially to said support (1) , with its own major base (8) fastened to the soil and with its own minor base (10) at a height.
  • Figure 1 shows a side view of the invention, shown in section in figure 2.
  • Figures 3 and 4 show two section views of a preferred embodiment comprising an underground structure and collection ducts, figure 5 shows a detail view of the base of the invention; figure 6 shows an embodiment comprising a geothermal probe.
  • the vertical-axis wind turbine according to the invention comprises:
  • a supporting vertical structure (1) shaped as a hollow circular sectioned tube, provided with supporting feet (9) fastening the supporting structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4) , hinged at the axis of said supporting vertical structure (1) .
  • said shaft is hinged by means of at least an upper spoked wheel (4.2) , and a lower spoked wheel (4.1) , fastened to the inner surface of said vertical duct (1) .
  • the device comprises also a vertical-axis wind turbine (2) , keyed on the upper end of said rotation axis (4) , arranged just outside the upper end (1.2) of said vertical duct (1) and motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy .
  • the device is characterized in that it further comprises a solar collector with variable section (7) , shaped as axial-symmetrical solid with bottom- up decreasing diameter, said solar collector being arranged coaxially to said support (1) , with its own major base (8) fastened to the soil and with its own minor base (10) at a height corresponding to the lower base of said hollow supporting structure ( 1 ) .
  • said motion conversion means comprise a revolutions reduction unit (5) and an alternator (6) .
  • said collector (7) is also installed so that it is in direct contact with the housing of said motion conversion means, so that it can be heated by the heat dissipated by the same, thus increasing the air heating effect.
  • said vertical-axis wind turbine rotates by exploiting both the horizontal wind currents and the ascending currents going up inside the supporting structure (1) •
  • the collector (7) thanks to its shape, sends upwards the wind currents hitting it, and thanks to its own axial symmetry this occurs regardless of the wind original direction.
  • the device can comprise at least a propeller (3) , keyed on said shaft (4) and arranged inside said hollow vertical supporting structure (1) , configured to exploit an ascending current transforming it in kinetic energy available for the axis of said shaft (4) , with direction corresponding to the rotation direction of the vertical-axis wind turbine (2) , keyed on the upper end of said rotation shaft (4) .
  • the structure for vertical-axis wind turbine provided with axial airflows exploiting duct is particularly suitable to key on the upper end of said rotation axis (4) a Darrieus wind turbine comprising a plurality of curved blades, with aerodynamical profile mounted on a vertical rotating shaft.
  • the curvature of the blades allows the same blade to reach high rotation speeds.
  • the curvature of the blades is suitable to exploit, in addition to the horizontal wind, also the ascending currents; in fact, the geometry of the curved blades reacts to the axial currents, thus contributing to the transformation of the kinetic energy of the ascending wind in mechanical energy available on the shaft.
  • the device comprises heat transmission means from said motion conversion means (5, 6) to said collector (7) .
  • the device comprises at least an aeration duct (12) , configured to allow to replace the air going out through the hollow supporting structure (1) .
  • the aeration duct (12) is associated to at least a heat exchanger (13) , able to pre-heat the inlet air through said aeration duct by means of geothermal energy.
  • the hollow support (1) comprises preferably at least a collector (14) arranged on the side wall of said support (1) , oriented downwards and configured to put the outside in communication with the inside.
  • the hollow support (1) comprises preferably a plurality of collectors (14) . These collectors can be associated to any other aeraulic flow, so that the flow passes through said at least one further propeller (3) and contributes to the production of mechanical energy to the shaft (4) .
  • one or more tubes pass which allow a hot airflow to go in and out from said supporting structure , giving the air contained therein their own heat but without mixing their own flow to the airflow hitting the propellers and turbines .
  • the device comprises a geothermal probe ( 14 ) configured to exchange heat with the soil and with said collector ( 7 ) by means of a thermo-vector fluid circulation, and provided with pushing means of said thermo-vector fluid, with temperature sensors to detect the temperature of the thermovector fluid and collector and with control means configured to actuate said pushing means i f the temperature of the thermo-vector fluid is higher than the temperature of said collector ( 7 ) .

Abstract

Device for conversion of wind energy in electric energy, comprising : a supporting vertical structure (1), shaped as an open hollow circular sectioned tube at its upper and lower base and provided with supporting feet (9) fastening said structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4), hinged at the axis of said supporting vertical structure (1); a vertical-axis wind turbine (2), keyed at the upper end of said shaft (4), on the top with respect to said vertical duct (1); motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy, characterized in that it further comprises a solar collector with variable section (7), shaped as axial-symmetrical solid with bottom-up decreasing diameter, said solar collector being arranged coaxially to said support (1), with its own major base (8) fastened to the soil and with its own minor base (10) at a height corresponding to the lower base of said hollow supporting structure (1).

Description

VERTICAL-AXIS WIND TURBINE WITH AXIAL AIRFLOWS
EXPLOITING DUCT
Description
The present invention relates to a vertical-axis wind turbine , and in particular to a vertical-axis wind turbine configured to exploit also vertical airflows , as well as to recover energy from waste heat sources . In particular, the present invention relates to a vertical-axis wind turbine provided with axial airflows exploiting duct .
The present invention is aimed at developing a technical measure which involves the supporting structure of a vertical-axis wind turbine in the whole ef ficiency of the same turbine , by exploiting ascending currents , which can be caused by height di f ferences , by solar irradiation or by the presence of waste heat sources .
An ascending current is an air mass moving upwards due to the density di f ference caused by the temperature di f ference , or because it is pushed by a pressure di f ference .
Hot air has lower density than cold one , so it weighs less in case of equal volume , hence i f an air mass is heated (by the sun or other heat sources ) it becomes lighter and begins to go up by convection . The present invention provides a supporting structure for a vertical-axis wind turbine , configured to exploit ascending currents , conveying them along the vertical axis o f the turbine , in order that the kinetic energy is then converted in mechanical energy available on the rotation shaft of the same turbine .
The technical problem solved by the present invention is in particular that of creating an ascending current which can be exploited by the same turbine , by means of the introduction of suitable technical measures in the reali zation of the supporting structure , also exploiting solar irradiation and hori zontal winds , so that a bottom- up axial flow is generated that contributes to the production of energy by the vertical-axis wind turbine .
Currently, various kinds of supporting structures exist on the market , said wind towers , which have di f ferent dimensions and structure , and that are designed to support wind turbines with di f ferent dimensions and power .
The function of a wind tower is not only the provision of a supporting structure , but also to allow the turbine to be positioned well on the soil level , so that it is possible to exploit the wind fastest speeds , which are present at higher heights .
Disadvantageously, the supporting structures known at the state of the art are used for heightsupporting wind turbines , and are not configured to contribute to convey the wind on the aerodynamical surfaces of the turbine in order to increase its ef ficiency .
Advantageously, the structure for the vertical-axis wind turbine according to the present invention comprises a duct for exploiting axial airflows and a supporting base configured to heat , pre ferably but not limitingly exploiting solar irradiation, the air at the base of the supporting structure , so to generate an axial flow which is then conveyed by the supporting structure towards the axis of the turbine . Moreover, in a preferred configuration of the invention, the device comprises at least another propeller ( 3 ) , keyed on the vertical rotation axis of the turbine and configured to convert the kinetic energy of the ascending current in mechanical energy, and to contribute to the trans formation of the wind kinetic energy in power available on the shaft , thus increasing the vertical-axis wind turbine ef ficiency . According to preferred aspects, the invention is well intended to be used for the realization of a vertical-axis wind turbine.
The present invention reaches the prefixed aims since it is a device for conversion of wind energy in electric energy, comprising:
- a supporting vertical structure (1) , shaped as an open hollow circular sectioned tube at its upper and lower base and provided with supporting feet (9) fastening said structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4) , hinged at the axis of said supporting vertical structure (1) ,
- a vertical-axis wind turbine (2) , keyed at the upper end of said shaft (4) , on the top with respect to said vertical duct (1) ,
- motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy, characterized in that it further comprises a solar collector with variable section (7) , shaped as axial-symmetrical solid with bottom-up decreasing diameter, said solar collector being arranged coaxially to said support (1) , with its own major base (8) fastened to the soil and with its own minor base (10) at a height.
A preferred embodiment of the invention will be described in the following by reference to the appended figures. Figure 1 shows a side view of the invention, shown in section in figure 2. Figures 3 and 4 show two section views of a preferred embodiment comprising an underground structure and collection ducts, figure 5 shows a detail view of the base of the invention; figure 6 shows an embodiment comprising a geothermal probe.
As it is shown in the appended figures, the vertical-axis wind turbine according to the invention comprises:
- a supporting vertical structure (1) , shaped as a hollow circular sectioned tube, provided with supporting feet (9) fastening the supporting structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4) , hinged at the axis of said supporting vertical structure (1) .
Preferably, said shaft is hinged by means of at least an upper spoked wheel (4.2) , and a lower spoked wheel (4.1) , fastened to the inner surface of said vertical duct (1) . The device comprises also a vertical-axis wind turbine (2) , keyed on the upper end of said rotation axis (4) , arranged just outside the upper end (1.2) of said vertical duct (1) and motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy .
The device is characterized in that it further comprises a solar collector with variable section (7) , shaped as axial-symmetrical solid with bottom- up decreasing diameter, said solar collector being arranged coaxially to said support (1) , with its own major base (8) fastened to the soil and with its own minor base (10) at a height corresponding to the lower base of said hollow supporting structure ( 1 ) .
Preferably, said motion conversion means comprise a revolutions reduction unit (5) and an alternator (6) .
Preferably, said collector (7) is also installed so that it is in direct contact with the housing of said motion conversion means, so that it can be heated by the heat dissipated by the same, thus increasing the air heating effect. As it will be clear in the following, said vertical-axis wind turbine rotates by exploiting both the horizontal wind currents and the ascending currents going up inside the supporting structure (1) • In fact, the collector (7) , thanks to its shape, sends upwards the wind currents hitting it, and thanks to its own axial symmetry this occurs regardless of the wind original direction.
Moreover, thanks to its own dark colour, when it is hit by solar rays it is heated by irradiation, thus creating by density difference an axial airflow which goes in bottom-up direction inside the supporting structure (1) .
Moreover, in order to increase further the efficiency, the device can comprise at least a propeller (3) , keyed on said shaft (4) and arranged inside said hollow vertical supporting structure (1) , configured to exploit an ascending current transforming it in kinetic energy available for the axis of said shaft (4) , with direction corresponding to the rotation direction of the vertical-axis wind turbine (2) , keyed on the upper end of said rotation shaft (4) .
The structure for vertical-axis wind turbine provided with axial airflows exploiting duct is particularly suitable to key on the upper end of said rotation axis (4) a Darrieus wind turbine comprising a plurality of curved blades, with aerodynamical profile mounted on a vertical rotating shaft. The curvature of the blades allows the same blade to reach high rotation speeds. The curvature of the blades is suitable to exploit, in addition to the horizontal wind, also the ascending currents; in fact, the geometry of the curved blades reacts to the axial currents, thus contributing to the transformation of the kinetic energy of the ascending wind in mechanical energy available on the shaft.
In another embodiment shown in figures 3 and 4, it is shown a device of the just described type, characterized in that it is installed with the motion conversion means (5, 6) and the collector
(7) arranged under the soil level.
In this way, the heat dissipated by the motion conversion means, since it cannot be wasted in other directions, is dissipated as a whole through the collector (7) .
Preferably, as it is shown in figure 5, the device comprises heat transmission means from said motion conversion means (5, 6) to said collector (7) . Preferably, moreover, the device comprises at least an aeration duct (12) , configured to allow to replace the air going out through the hollow supporting structure (1) .
According to a preferred but not limiting embodiment, the aeration duct (12) is associated to at least a heat exchanger (13) , able to pre-heat the inlet air through said aeration duct by means of geothermal energy.
Yet in figure 4, it is possible to observe that the hollow support (1) comprises preferably at least a collector (14) arranged on the side wall of said support (1) , oriented downwards and configured to put the outside in communication with the inside.
The hollow support (1) comprises preferably a plurality of collectors (14) . These collectors can be associated to any other aeraulic flow, so that the flow passes through said at least one further propeller (3) and contributes to the production of mechanical energy to the shaft (4) .
For example, in case of installation of the device on the roof of residential buildings, there can be the flow of the fumes deriving from the stack of ovens of pizzerias and restaurants provided on the lower floor; in case of installation of the turbine in industrial fields, there can be the fume deriving from the outlet of chimneys of boilers , furnaces or other industrial activities .
In another embodiment , inside said collectors ( 14 ) one or more tubes pass which allow a hot airflow to go in and out from said supporting structure , giving the air contained therein their own heat but without mixing their own flow to the airflow hitting the propellers and turbines .
This allows to exploit the resulting heat to increase the stack ef fect and so the production of mechanical energy to the shaft of the device ( 4 ) without anyway making the mechanical elements being interested by the dirty particles and aggressive chemical compounds present in the exhaust fumes . According to another embodiment shown in fig . 6 , the device comprises a geothermal probe ( 14 ) configured to exchange heat with the soil and with said collector ( 7 ) by means of a thermo-vector fluid circulation, and provided with pushing means of said thermo-vector fluid, with temperature sensors to detect the temperature of the thermovector fluid and collector and with control means configured to actuate said pushing means i f the temperature of the thermo-vector fluid is higher than the temperature of said collector ( 7 ) .

Claims

1. Device for conversion of wind energy in electric energy, comprising:
- a supporting vertical structure (1) , shaped as an open hollow circular sectioned tube at its upper and lower base and provided with supporting feet (9) fastening said structure (1) in lifted position from the soil, so to leave a free opening (1.1) in the lower portion thereof; a shaft (4) , hinged at the axis of said supporting vertical structure (1) ,
- a vertical-axis wind turbine (2) , keyed at the upper end of said shaft (4) , on the top with respect to said vertical duct (1) ,
- motion conversion means (5, 6) arranged at the base of said supporting structure and configured to transform the motion of said shaft (4) in electric energy, characterized in that it further comprises a solar collector with variable section (7) , shaped as axial-symmetrical solid with bottom-up decreasing diameter, said solar collector being arranged coaxially to said support (1) , with its own major base (8) fastened to the soil and with its own minor base (10) at a height corresponding to the lower base of said hollow supporting structure ( 1 ) .
2. Device for conversion of wind energy in electric energy according to claim 1, characterized in that said supporting vertical structure (1) has hollow circular section.
3. Device for conversion of wind energy in electric energy according to claim 1 or 2, characterized in that said base with variable section is a cone or a frustum of cone.
4. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that said shaft (4) is hinged by means of at least an upper spoked wheel (4.2) and a lower spoked wheel (4.1) , fastened to the inner surface of said vertical duct (1) .
5. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that said motion conversion means comprise a revolutions reduction unit (5) and an alternator (6) .
6. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that said collector (7) is installed so that it is in direct contact with the housing of said motion conversion means, so that it can be heated by the heat dissipated by the same, thus increasing the air heating effect.
7. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that it comprises also at least a propeller (3) , keyed on said shaft (4) and arranged inside said hollow vertical supporting structure (1) , configured to exploit an ascending current transforming it in kinetic energy available for the axis of said shaft (4) .
8. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that said wind turbine is a Darrieus type turbine.
9. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that it is installed with the motion conversion means (5, 6) and the collector (7) arranged under the soil level.
10. Device for conversion of wind energy in electric energy according to claim 9, characterized in that it comprises heat transmission means (16) from said motion conversion means (5, 6) to said collector ( 7 ) .
11. Device for conversion of wind energy in electric energy according to claim 10, characterized in that it comprises also at least an aeration duct (12) , configured to allow to replace the air going out through the hollow supporting structure ( 1 ) .
12. Device for conversion of wind energy in electric energy according to claim 11, characterized in that to said at least one aeration duct (12) at least a heat exchanger (13) is associated, which is able to pre-heat the inlet air through said aeration duct (12) by means of geothermal energy.
13. Device for conversion of wind energy in electric energy according to any one of the preceding claims, characterized in that said hollow support (1) comprises at least a collector (14) arranged on the side wall of said support (1) , oriented downwards and configured to put the outside in communication with the inside, by means of said at least one collector another aeraulic flow being able to be conveyed, so that said flow passes through said at least one further propeller
(3) and contributes to the production of mechanical energy to the shaft (4) .
14. Device for conversion of wind energy in electric energy according to claim 13, characterized in that inside said at least one collector (14) one or more tubes pass which allow a hot airflow to go in and out from said supporting structure (1) , giving the air contained therein their own heat but without mixing their own flow to the airflow hitting said at least one propeller (3) and said turbine (2) .
15. Device for conversion of wind energy in electric energy according to any one of the preceding claims, further comprising a geothermal probe (14) configured to exchange heat with the soil and with said collector (7) by means of a thermo-vector fluid circulation, and provided with pushing means of said thermo-vector fluid, with temperature sensors to detect the temperature of the thermo-vector fluid and collector and with control means configured to actuate said pushing means i f the temperature of the thermo-vector fluid is higher than the temperature of said collector
( 7 ) .
PCT/IB2023/050358 2022-01-24 2023-01-16 Vertical-axis wind turbine with axial airflows exploiting duct WO2023139465A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT202022000000218 2022-01-24
IT202022000000218U IT202200000218U1 (en) 2022-01-24 2022-01-24 STRUCTURE FOR VERTICAL AXIS WIND BLADE EQUIPPED WITH EXPLOITATION DUCT FOR AXIAL AIR FLOWS

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100031654A1 (en) * 2006-10-10 2010-02-11 Jose Antonio Barbero Ferrandiz Reaction Solar Turbine
US8786126B2 (en) * 2012-07-16 2014-07-22 Thomas Meyer Wind turbine having two hemispherical blades
US9038385B1 (en) * 2013-02-03 2015-05-26 Kyung N. Khim System for extracting energy from wind and thermal gradients
WO2017160136A1 (en) * 2016-03-17 2017-09-21 Николай Садвакасович Буктуков Wind power installation
CN109611296A (en) * 2018-12-29 2019-04-12 武汉理工大学 A kind of system that can be carried out power generation using solar energy and underground heat and produce water

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100031654A1 (en) * 2006-10-10 2010-02-11 Jose Antonio Barbero Ferrandiz Reaction Solar Turbine
US8786126B2 (en) * 2012-07-16 2014-07-22 Thomas Meyer Wind turbine having two hemispherical blades
US9038385B1 (en) * 2013-02-03 2015-05-26 Kyung N. Khim System for extracting energy from wind and thermal gradients
WO2017160136A1 (en) * 2016-03-17 2017-09-21 Николай Садвакасович Буктуков Wind power installation
CN109611296A (en) * 2018-12-29 2019-04-12 武汉理工大学 A kind of system that can be carried out power generation using solar energy and underground heat and produce water

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