DE102015002435A1 - Optimization of the Savonius rotor shape - Google Patents

Optimization of the Savonius rotor shape Download PDF

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Publication number
DE102015002435A1
DE102015002435A1 DE102015002435.3A DE102015002435A DE102015002435A1 DE 102015002435 A1 DE102015002435 A1 DE 102015002435A1 DE 102015002435 A DE102015002435 A DE 102015002435A DE 102015002435 A1 DE102015002435 A1 DE 102015002435A1
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Germany
Prior art keywords
drop
shape
rotor
optimization
rotor shape
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DE102015002435.3A
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German (de)
Inventor
David Ohnmacht
Yannick Teubert
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Individual
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Individual
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Priority to DE102015002435.3A priority Critical patent/DE102015002435A1/en
Publication of DE102015002435A1 publication Critical patent/DE102015002435A1/en
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    • 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
    • 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/213—Rotors for wind turbines with vertical axis of the Savonius type
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

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

Abstract

Die Grundrissformen (1) sind dadurch gekennzeichnet, dass sich diese zur herkömmlichen Form (2) darin unterscheiden, dass die neuen Formen aus einer Kombination verschieden Gewölbter Segmente sowie aus geraden Segmenten zusammensetzten (1) sind. Dabei wird eine natürliche „Tropfen-Form” angenommen, welche einem der Länge nach aufgeschnittenen Tropfen ähnelt (3).The planforms (1) are characterized in that they differ from the conventional form (2) in that the new shapes are composed of a combination of different curved segments and straight segments (1). This assumes a natural "drop shape" which resembles a drop cut lengthwise (3).

Description

Im heutigen Energiemix spielen regenerative Energien eine immer wichtiger Rolle. Vor allem der Gebrauch von diversen Turbinen- oder Rotorsystemen, welche die Windenergie benutzen. Es ist bekannt, dass bei einem Savonius Rotor, halbschalen Förmige Formen benutzt werden, welche mit einer Vertikalen Welle verknüpft sind. Diese sind so angeordnet, dass sich der Rotor schon bei einer geringen Durchströmungsgeschwindigkeit eines Gases oder eine Flüssigkeit um diese vertikale dreht. Diese Mechanische Bewegungsenergie kann über Dynamos in elektrische Energie umgewandelt werden.In today's energy mix, renewable energy plays an increasingly important role. Especially the use of various turbine or rotor systems that use wind energy. It is known that in a Savonius rotor, half shells are used Shaped forms associated with a vertical shaft. These are arranged so that the rotor turns at a low flow rate of a gas or a liquid about this vertical. This mechanical kinetic energy can be converted via dynamos into electrical energy.

Nachteile des Stands der TechnikDisadvantages of the prior art

Herkömmliche Rotorformen:Conventional rotor shapes:

  • 1) sind aerodynamisch ungünstig und haben dadurch keinen optimalen Endgeschwindigkeitswert1) are aerodynamically unfavorable and thus have no optimum end speed value
  • 2) haben eine hohe Masse und besitzen dadurch einen niedrigen Beschleunigungswert2) have a high mass and thus have a low acceleration value
  • 3) haben zur allgemeinen Folge einen sehr hoher Energieverlust durch einen zu geringen Wirkungsgrad3) have the general consequence of a very high energy loss due to a low efficiency

Aufgabe der ErfindungObject of the invention

Eine Maximierung des Wirkungsgrades durch

  • 1) die Optimierung der Form sowie der Anordnung der Savonius Rotorflügel
  • 2) reduzierung der Masse der Rotorflügel
A maximization of the efficiency by
  • 1) the optimization of the shape as well as the arrangement of the Savonius rotor blades
  • 2) Reduction of the mass of the rotor blades

Vorteile der ErfindungAdvantages of the invention

  • 1) Die neuen Rotorflügel haben eine geringere Masse, somit wird Material eingespart1) The new rotor blades have a lower mass, thus saving material
  • 2) Die neuen Rotorflügel bieten eine optimale aerodynamische Form, welche eine 25–50% höhere Umdrehungsgeschwindigkeit zur herkömmlichen Form garantiert und somit eine höhere Leistung bringt.2) The new rotor blades offer an optimal aerodynamic shape, which guarantees a 25-50% higher rotational speed compared to the conventional form and thus brings a higher performance.
  • 3) Ein allgemein höherer Wirkungsgrad wird erlangt.3) A generally higher efficiency is achieved.

Beschreibungdescription

Die neuen Rotorformen weisen eine Tropfen ähnliche Form auf. Bei zwei Rotorflügeln sind diese so angeordnet, dass sie zur anderen Form mit einem bestimmten Winkel zueinander gedreht sind. Bei mehr als zwei Rotorflügeln sind diese so angeordnet, dass sie sich alle im selben Winkel zueinander befinden. Dabei können sich diese Rotorflügel in ihrer Form untereinander unterscheiden. Der Maßstab dieser Rotorformen kann einen beliebigen Wert annehmen.The new rotor shapes have a drop-like shape. With two rotor blades, these are arranged so that they are rotated to the other shape with a certain angle to each other. With more than two rotor blades, these are arranged so that they are all at the same angle to each other. These blades can differ in their shape with each other. The scale of these rotor shapes can assume any value.

Claims (6)

Die Grundrissformen (1) sind dadurch gekennzeichnet, dass sich diese zur herkömmlichen Form (2) darin unterscheiden, dass die neuen Formen aus einer Kombination verschieden Gewölbter Segmente sowie aus geraden Segmenten zusammensetzten (1) sind. Dabei wird eine natürliche „Tropfen-Form” angenommen, welche einem der Länge nach aufgeschnittenen Tropfen ähnelt (3).The floor plans ( 1 ) are characterized in that they are of conventional form ( 2 ) in that the new shapes consist of a combination of different curved segments as well as straight segments ( 1 ) are. A natural "drop shape" is assumed which resembles a longitudinally cut drop ( 3 ). Die Positionierung zweier Flügel ist durch einen Wert der beiden Parameter d und A gekennzeichnet (4). Dabei ist die Wölbung des Tropfen stets ferner der RotorachseThe positioning of two wings is characterized by a value of the two parameters d and A ( 4 ). The curvature of the drop is always further the rotor axis Die Positionierung mehrerer Flügel ist durch den Parameter e gekennzeichnet (6)The positioning of several wings is indicated by the parameter e ( 6 ) Die dreidimensionale Form ist dadurch gekennzeichnet, dass sich in jeder Teilebene des Körpers ein Teil des Grundrisses befindet (5). Dabei muss die komplette Rotorform in der dreidimensionalen Ebene nicht zwangsläufig symmetrisch sein.The three-dimensional shape is characterized in that part of the floor plan is located in each part plane of the body ( 5 ). The complete rotor shape in the three-dimensional plane does not necessarily have to be symmetrical. Dieses Prinzip der Tropfenrotorform kann auch beim der Horizontalen Windkraftanlage angewendet werden.This principle of the droplet rotor shape can also be applied to the horizontal wind turbine. Rotoren, die aus den Tropfen ähnlichen Formen abgeleiteten sind, sind dadurch gekennzeichnet, dass diese zwar aus einem Tropfen ähnlichen Rotoren entstanden sind, sich aber nicht mehr zwangsläufig einem Tropfen ähneln müssen. (7)Rotors, which are derived from the drop-like shapes, are characterized by the fact that these have arisen from a drop-like rotors, but no longer inevitably have to resemble a drop. ( 7 )
DE102015002435.3A 2015-02-26 2015-02-26 Optimization of the Savonius rotor shape Withdrawn DE102015002435A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102015002435.3A DE102015002435A1 (en) 2015-02-26 2015-02-26 Optimization of the Savonius rotor shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015002435.3A DE102015002435A1 (en) 2015-02-26 2015-02-26 Optimization of the Savonius rotor shape

Publications (1)

Publication Number Publication Date
DE102015002435A1 true DE102015002435A1 (en) 2016-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE102015002435.3A Withdrawn DE102015002435A1 (en) 2015-02-26 2015-02-26 Optimization of the Savonius rotor shape

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2566804A (en) * 2017-08-07 2019-03-27 Spinetic Energy Ltd A rotor for a vertical axis wind turbine
DE102019003254A1 (en) * 2019-05-07 2020-11-12 Franco Ghiani ENERGY SYSTEM

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2566804A (en) * 2017-08-07 2019-03-27 Spinetic Energy Ltd A rotor for a vertical axis wind turbine
GB2566804B (en) * 2017-08-07 2020-05-06 Spinetic Energy Ltd A rotor for a vertical axis wind turbine
US11220995B2 (en) * 2017-08-07 2022-01-11 Spinetic Energy Limited Rotor for a vertical axis wind turbine
DE102019003254A1 (en) * 2019-05-07 2020-11-12 Franco Ghiani ENERGY SYSTEM
DE102019003254B4 (en) * 2019-05-07 2021-06-17 Franco Ghiani ENERGY SYSTEM

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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee