WO2000042320A1 - Cheminee tourbillonnaire non bornee - Google Patents

Cheminee tourbillonnaire non bornee Download PDF

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Publication number
WO2000042320A1
WO2000042320A1 PCT/AU1999/000037 AU9900037W WO0042320A1 WO 2000042320 A1 WO2000042320 A1 WO 2000042320A1 AU 9900037 W AU9900037 W AU 9900037W WO 0042320 A1 WO0042320 A1 WO 0042320A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
transparent material
power plant
solar collector
air
Prior art date
Application number
PCT/AU1999/000037
Other languages
English (en)
Inventor
Norman Louat
Original Assignee
Norman Louat
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 Norman Louat filed Critical Norman Louat
Priority to AU25033/99A priority Critical patent/AU2503399A/en
Priority to PCT/AU1999/000037 priority patent/WO2000042320A1/fr
Publication of WO2000042320A1 publication Critical patent/WO2000042320A1/fr

Links

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
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/02—Devices for producing mechanical power from solar energy using a single state working fluid
    • F03G6/04—Devices for producing mechanical power from solar energy using a single state working fluid gaseous
    • F03G6/045—Devices for producing mechanical power from solar energy using a single state working fluid gaseous by producing an updraft of heated gas or a downdraft of cooled gas, e.g. air driving an engine
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/10—Details of absorbing elements characterised by the absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/60—Details of absorbing elements characterised by the structure or construction
    • 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
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F24S2080/501—Special shape
    • F24S2080/502—Special shape in the form of multiple covering elements
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Definitions

  • the present invention relates generally to the field of
  • the present invention is related to collecting and
  • a clear glass or plastic material usually encloses the heat-collecting surface to help trap the heat.
  • the transparent material additionally may have openings which allow heated air to escape out of the
  • airflow simply means a column of flowing air which has tangential components of velocity of the
  • a chimney or smokestack purpose of a chimney or smokestack is to prevent the inward flow of ambient air into the column of
  • present invention to provide for a solar powered wind generator which is simple to build and inexpensive to manufacture.
  • Another object of the present invention is to provide wind deflection means within the solar
  • Still another object of the present invention is to provide an appropriately shaped and
  • Still another object of the present invention is to provide a solar powered wind generator
  • a further object of the present invention is to provide a solar powered wind generator which inhibits the mixing of ambient air with the produced updraft by imparting a vortex-like flow on the
  • the weather cycle represents one of the largest engines operating on this planet.
  • characteristics of the weather cycle are air conditioning on a
  • the primary task of this enquiry is an examination of the properties of a model system.
  • the heat collector will take the form of a large, rather flat truncated cone, circular in plan,
  • the tower has merely
  • the material can be any material that can be used to support itself and the turbine and to be capable of preventing radial air flow.
  • the material can be any material that can be used to support itself and the turbine and to be capable of preventing radial air flow.
  • the final item is the air column. Calculation shows that if the efficiency of the engine is to
  • the height of the column must be such as to be such as to be such as to be such as to be
  • the pressure, at the same height, of the air moving inside is lower than that
  • the wall of the stack acts as a barrier, that is to say it provides a force which acts to prevent
  • Figure 1 illustrates a cut away side view of the present invention
  • Figure 2 illustrates an overhead view of the present invention wherein a centrally located computer system
  • located aperture is circular in shape and wind deflecting vanes are located at
  • heat collector 110 The primary structure of the present invention, heat collector 110, is illustrated in Figure 1.
  • Heat collector 110 is used to collect energy radiating from the sun and heat the air located between
  • Heat absorbing layer 100 acts like a theoretical black body which traps the heat from the
  • Asphalt has all those characteristics
  • Layer 100 also services a secondary purpose of providing a foundation for braces 108;
  • Layer 100 has a convex shape near its center which is directly underneath aperture 106.
  • Top layer 104 defining the upper boundary of heated structure 110, is transparent to visible
  • layer 100 in an unimpeded manner. Further, layer 104 prevents the air 200, once it is heated, from mixing with ambient air outside structure 110.
  • Transparent material 104 is supported above heat absorbing layer 100 by a framework such as wire mesh 109 which rests on the framework of braces 108 which themselves are supported by heat absorbing layer 100.
  • An additional layer of wire mesh 111 rests above material 104.
  • Lower layer 109 provides to material 104 the strength necessary to withstand the forces consequent on the decreased pressure in the disclosure; and layer 111 provides stability against lifting forces which may be occasioned by local winds.
  • Braces 108 are securely attached to layer 100 foundation to withstand the forces of air flow within structure 110 and wind loading of the structure itself.
  • braces 108 are the minimum required to safely support upper layer 104 and are designed to minimize any impedance to air movement. Thin, strong metallic braces made of aluminum, steel, or other functionally equivalent alloys provide the needed rigidity while occupying very little space. Of course other materials as are known in the art could also be used as braces 108 but cost may be a factor in excluding exotic elements or composites from consideration.
  • transparent layer 104 As for the material of transparent layer 104, glass or clear plastic have the necessary characteristics. They both allow in sunlight; they have the additional benefit of reflecting infrared energy radiating from heat absorbing layer 100, which improves heating of the confined air 200; and they have the strength to withstand harsh environments. Also, they are capable of being securely attached to braces 108 in such a manner as to confine air flowing within structure 110. Because of structure 110 size, layer 104 is preferably constructed from a plurality of panels or sheets of a selected transparent material which are attached to each other and braces 108 to form an air-tight barrier and must conform to size of layer 100. In a preferred embodiment, to maximize the volume of heated air, transparent layer 104 conforms to the size and shape of heat absorbing layer 100. Also, transparent layer 104 resembles a truncated cone in that its height above layer 100 is greater near the center of structure 100 than at the periphery.
  • aperture 106 which allows heated air to escape structure 110. Allowing air to escape is critical because this causes fresh air to be drawn into openings 114 of structure 110 which subsequently gets heated, becomes a vortex, escapes, and starts the cycle all over again.
  • aperture 106 is circular in nature, centrally located on structure 110 and approximately one-tenth the size of structure 110.
  • section 122 which projects above transparent layer 104 for a distance that is on the same order of magnitude as the radius of aperture 106.
  • Section 122 provides a stable transition area where rising, rotating air 119 is protected from ambient air during the critical, early stages of its formation. Once properly formed, rising vortex 119 does not require a physical chimney because mixing with ambient air is prevented by the vortex's angular velocity.
  • An additional purpose of section 122 is to act as a support for a turbine or other power generating device (not shown) which can capture the energy present in the rising vortex.
  • section 122 is preferably constructed of a sturdy metal and is supported by a plurality of columns 128 which are also made of sturdy metal and attach to layer 100.
  • Columns 128 are numerous enough and strong enough to support section 122 and a turbine but do not significantly impede air flow 200 within structure 110. Alternately, other functionally equivalent materials could be used to construct columns 128 and section 122.
  • the height of transparent layer 104 above heat absorbing layer 100 and the size of the aperture 106 can be various values in relation to overall structure 110. However, at the periphery, transparent layer 104 must be high enough from layer 100 to allow outside air to be drawn into structure 110. Preferred heights to accomplish this requirement range from 1 to 5 meters. Using this range of periphery heights, all dimensions of structure 110 can then be calculated if the following preferred designs constraints are used:
  • r-h C is not a necessary characteristic of the present invention, it simply results in a constant radial flux at constant velocity.
  • vanes 202 The key to starting the rotational movement of air 200 within structure 110 are wind directing vanes 202.
  • Air 118 is drawn into structure 110 through openings 114 in a radial direction.
  • vanes 202 are angled, preferably at 45 degrees, so that air entering structure 110 has imposed on it both a radial and tangential velocity component.
  • Vanes 202 are firmly secured to layer 100 in a perpendicular manner and rise substantially to the height of transparent layer 104.
  • vanes 202 utilize nearby braces 108 to provide strength and rigidity.
  • vanes 202 are made of a strong material such as steel and placed at the periphery of structure 110. However, any functionally equivalent material can also be used to construct vanes 202 which can just as easily be placed at inner radii as well.
  • the collecting zone is circular and that its outer radius is R, and that the rate
  • the rate of heating is given by
  • the density of the atmosphere remains constant with increasing altitude. In fact, the density at
  • W W, + W 3 + W r + W e
  • W r refers to the energy associated with rotation
  • the energy of the air entering the collector is increased by the action of the sun by an amount equal to the sum of the kinetic energy acquired and the thermal energy.
  • an arrangement is envisaged in which there is a central core within which air moves vertically, with a velocity which is essentially independent of radius and with a rotational velocity which is proportional to radius and that this region is surrounded by one in which the air has a constant vertical component of velocity and in which the rotational component falls inversely with distance from the center.
  • H 0 is the height of the gap around the periphery through which the air enters.
  • V the vertical velocity
  • T represents the (constant) angular momentum and r is the radius.
  • R 1 — e ⁇ is so large that (23) is not sufficiently accurate and must be replaced by
  • c v is the specific heat at constant pressure.
  • the gas is diatomic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne une structure de collecte d'énergie solaire (110) utilisant l'effet de serre pour chauffer l'air entre une base de couleur foncée (100) et une surface supérieure transparente (104). Des ailettes à vent (202), situées entre la base (100) et la surface transparente (104), permettent la rotation de l'air en mouvement chauffé (118) autour du centre de la structure. L'air s'échappant à travers une ouverture centrale (106) de la surface transparente (104) présente une trajectoire tourbillonnaire, ce qui évite d'avoir à utiliser une structure de cheminée physique pour empêcher l'air ambiant de se mélanger avec l'air s'échappant. Pour produire une puissance importante d'un point de vue commercial, un collecteur de près de 106 m2 est prévu. Le soleil fournit à peu près 1 kW/m2, un collecteur présentant un rayon d'1km fournit donc une entrée énergétique de ∩3 x 109 W, qui est transformée en puissance de sortie, par association avec des turbo-générateurs. Cette encapsulation du cycle météorologique mondial présente un intérêt dans la climatisation à grande échelle et dans la production de pluie.
PCT/AU1999/000037 1999-01-11 1999-01-11 Cheminee tourbillonnaire non bornee WO2000042320A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU25033/99A AU2503399A (en) 1999-01-11 1999-01-11 Unbounded vortical chimney
PCT/AU1999/000037 WO2000042320A1 (fr) 1999-01-11 1999-01-11 Cheminee tourbillonnaire non bornee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU1999/000037 WO2000042320A1 (fr) 1999-01-11 1999-01-11 Cheminee tourbillonnaire non bornee

Publications (1)

Publication Number Publication Date
WO2000042320A1 true WO2000042320A1 (fr) 2000-07-20

Family

ID=3764566

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1999/000037 WO2000042320A1 (fr) 1999-01-11 1999-01-11 Cheminee tourbillonnaire non bornee

Country Status (2)

Country Link
AU (1) AU2503399A (fr)
WO (1) WO2000042320A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1117925C (zh) * 2000-08-30 2003-08-13 练乾 利用太阳能发电的装置及方法
US7086823B2 (en) 2001-09-19 2006-08-08 Louis M Michaud Atmospheric vortex engine
WO2007022556A1 (fr) * 2005-08-22 2007-03-01 Louat, Heather Améliorations apportées aux moteurs thermiques solaires et aux cheminées industrielles
WO2011025914A1 (fr) * 2009-08-31 2011-03-03 Georgia Tech Research Corporation Production d'énergie à l'aide de tourbillons induits par la flottabilité
US7938615B2 (en) 2003-09-11 2011-05-10 Louis Michaud Enhanced vortex engine
WO2011103864A3 (fr) * 2010-02-27 2012-02-02 Energia Globale Gmbh Centrale thermodynamique à cycle combiné
WO2013115938A1 (fr) * 2012-02-03 2013-08-08 International Business Machines Corporation Refroidissement de concentrateur solaire par circulation de gaz tourbillonnaire
US9097241B1 (en) 2014-10-02 2015-08-04 Hollick Solar Systems Limited Transpired solar collector chimney tower
US9863313B2 (en) 2009-08-31 2018-01-09 Georgia Tech Research Corporation Power generation using buoyancy-induced vortices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1231582A (fr) * 1967-01-26 1971-05-12
US4275309A (en) * 1977-07-21 1981-06-23 Lucier Robert E System for converting solar heat to electrical energy
US4452046A (en) * 1980-07-24 1984-06-05 Zapata Martinez Valentin System for the obtaining of energy by fluid flows resembling a natural cyclone or anti-cyclone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1231582A (fr) * 1967-01-26 1971-05-12
US4275309A (en) * 1977-07-21 1981-06-23 Lucier Robert E System for converting solar heat to electrical energy
US4452046A (en) * 1980-07-24 1984-06-05 Zapata Martinez Valentin System for the obtaining of energy by fluid flows resembling a natural cyclone or anti-cyclone

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1117925C (zh) * 2000-08-30 2003-08-13 练乾 利用太阳能发电的装置及方法
US7086823B2 (en) 2001-09-19 2006-08-08 Louis M Michaud Atmospheric vortex engine
US7938615B2 (en) 2003-09-11 2011-05-10 Louis Michaud Enhanced vortex engine
WO2007022556A1 (fr) * 2005-08-22 2007-03-01 Louat, Heather Améliorations apportées aux moteurs thermiques solaires et aux cheminées industrielles
US8875509B2 (en) 2009-08-31 2014-11-04 Georgia Tech Research Corporation Power generation using buoyancy-induced vortices
WO2011025914A1 (fr) * 2009-08-31 2011-03-03 Georgia Tech Research Corporation Production d'énergie à l'aide de tourbillons induits par la flottabilité
US9863313B2 (en) 2009-08-31 2018-01-09 Georgia Tech Research Corporation Power generation using buoyancy-induced vortices
AU2010286556B2 (en) * 2009-08-31 2015-11-19 Georgia Tech Research Corporation Power generation using buoyancy-induced vortices
CN102803712A (zh) * 2010-02-27 2012-11-28 Energia全球股份有限公司 热力组合发电站
DE102010009647B4 (de) * 2010-02-27 2015-02-19 Energia Globale Gmbh Kombinationskraftwerk
WO2011103864A3 (fr) * 2010-02-27 2012-02-02 Energia Globale Gmbh Centrale thermodynamique à cycle combiné
US8941000B2 (en) 2012-02-03 2015-01-27 International Business Machines Corporation Solar concentrator cooling by vortex gas circulation
WO2013115938A1 (fr) * 2012-02-03 2013-08-08 International Business Machines Corporation Refroidissement de concentrateur solaire par circulation de gaz tourbillonnaire
US9097241B1 (en) 2014-10-02 2015-08-04 Hollick Solar Systems Limited Transpired solar collector chimney tower

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