The future of renewable energy

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    21-Aug-2014

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Airborne Wind Energy a brand new technology to harvest wind power in levels between 100 to 500 m

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  • Dieses Vorhaben wird von der Europischen Union kofinanziert Investition in Ihre Zukunft Uwe Ahrens The Future of Energy X-Wind-Technology
  • An energy source well known since 3000 years
  • Wind availability for operation up to 90% Up to 3 x more efficient than common windmills* Grid independent, scalable and suitable (for almost any territory) Operational costs comparable to fossil fuels* The main facts 3 3 *Source: Fraunhofer Institut IWES, Bremerhaven
  • 4 Energy Kite Generator/Engine Track System X-Wind plants combine well known technologies
  • 5 Energy Kite Generator/Engine Track System X-Wind plants combine well known technologies Bogie
  • Interface between bogie and steering unit X-Wind steering unit Pivot bearing Bogie 6 Steering unit
  • Power transmission into the grid
  • X-Wind plants combine well known technologies Simulation of an X-Wind plant Automatically steered kites Power unit 8 8
  • First flight with energy production Juli 11th 2012
  • Wind power plants uses the same force which are necessary for airplanes Lifting force! For example: Wind turbine with 6 MW capacity rating and a disc of 18.600 m, a capacity factor of 10-40% and an energy supply of 5,2 21 GWh/a (depending on site) Functoinality wind power plants 10
  • Where does the power come from? Die Kraft dahinter! Lifting force 11
  • A plank in the wind creates a load Lifting force 12 direction
  • This load (Fa) = lifting force, Is calculated by Different factors Lifting force 13 direction
  • 1. The wind speed (v) Slow wind = small load Lifting force 14 directiondirection
  • Strong wind = high load But in square ! Double Wind speed means 4 times of load ! Lifting force 15 direction
  • 2. The face (A) Small face = low force Lifting force 16 direction
  • Great face = great load Lifting force 17 direction
  • 3. The air density (r/2) Rare air = small load Lifting force 18 direction
  • Thick air = high force Remark: The air thicknes shifting close to ground (< 1000m) is insignificant! Lifting force 19 direction
  • 4. The lift coefficient (CA) Bad aerodynamic = small force Lifting force 20 direction
  • Good aerodynamic = high force Lifting force 21 direction
  • Lift distribution on a rotor blade V Rotor = 0 km/h V Rotor = 300 km/h
  • The rotor blade leading edges produces: The speed of the rotor blade heads to zero in the center. The lifting power squares with the the wind speed. The reason why the blade tips are responsible for the main part of produced energy. Where is the vast bulk from? 23
  • And what has this to do with airborne wind energy? 24
  • A cut through the rotor blade 25
  • Two tips together are comparable with a kite 26
  • Kites are flying rotor blade leading edges 27
  • The optimal flight patterns is a horizontal position of an 8. How kites fly Energy kites are able to fly in the optimal flight level ! High at weak wind, low if wind is to strong ! A conventional wind turbine is not able to stoop down ! 28
  • The horizontal flight pattern scheme 29
  • With increasing level not only wind speed is increasing but also the intensity
  • Jibe position Back and forward with wind from one direction with sailboat Kite in idle position Wind- direction TackJibe X-Wind principle Back and forward with wind from one direction 31 Main principle
  • Jibe position Back and forward with wind from one direction with sailboat Kite in idle position Wind- direction TackJibe 32 Main principle
  • Jibe position Back and forward with wind from one direction with sailboat Kite in idle position Wind- direction TackJibe X-Wind principle Back and forward with wind from one direction 33
  • Energy production Energy- consumption
  • X-Wind power: Kites pulls powerhead = energy production, powerhead runs = give a lift or hold kite in the air 35 35
  • 36 Factor 3,1 Factor 2,4
  • Movie on request: info@x-wind.de 37
  • 38 Movie on request: info@x-wind.de
  • Real proportion of X-Wind Plants 39
  • Real proportion in comparison 40
  • Wind energy costs comparable with fossil fuels 120 GWh/year = 1 NTS-plant Starts at 2.5 m/sec, operates at 300 m 120 GWh/year = 60 x 1 MW windmill Starts at 5 m/sec, operates at 120 m Investment > 70 mil For the first time in history wind will produce energy comparable to fossil fuels! 41 41
  • Market outlook
  • Market outlook X-Windplants
  • Selected results of a study made by Fraunhoher Institute IWES, Bremerhaven 44
  • Results 45 Results: Wind speed in upper level is higher than expected
  • Results at different sites 46 Source: NTS Gain Level
  • Comparison capacity factors of conventional and airborne wind-energy 47 WEA = Conventional Wind Energy FWEA = Airborne Wind Energy
  • Electricity costs of airborne wind-energy 48
  • Specific area need 49 Biomass power plant 1-2 GWh/km/a (Middle Europe) Geothermal power plant 1-2 GWh/km/a (Turkey, Italy) Conventionell windpower 5-50 GWh/km/a (Coast, Offshore) Hydro electric power plant 5-50 GWh/km/a (Norway, Alps) Photovoltaic 10-100 GWh/km/a (South Europe) Solar heat power plant 100-250 GWh/km/a (Northern Afrika) X-Wind power plant >2.500 GWh/km/a (nearly at each site)2) Source: DLR Prof. Dr. Dr.-Ing. habil Hans Mller-Steinhagen 2) own calculation
  • Contribution to grid stability Production ConsumptionTransmission system operator 50 Hz Market for control reserveDispatchable plant tender X-Wind plant
  • Contribution to grid stability Technology is able to reduce its installed capacity within 10 sec. negative control reserve (switching from generation to engine mode) Is perfectly qualified for the provision of secondary and tertiary control reserve Therfore, technology can provide a substantial contribution to the grid stability
  • Revenues from control reserve market (GER) Average income from capacity prices 2012 2013 Negativ secondary control reserve 103.000 /MW/a 100.000 /MW/a Negativ tertiary control reserve 37.600 /MW/a 46.000 /MW/a
  • 53 < 400m single test track ( in operation since 2011) 40.000 sqm area at Mecklenburg-Vorpommern Mining rights for the area belong to FIM GmbH Permits and approvals: Thumbs up from the authorities 400m single track in operation by July 2011 Main winddirection circle track (starting 2014) 53 Test tracks in northern Germany, Region Mecklenburg-Vorpommern Prototyp building in Friedland
  • Awards February 2009, KIS-Forum Brussels: Most Successful company September 2009, EVC, Lisbon: Best Cleantech Company November 2009, 2. Mnchner Cleantech- Konferenz: Best Presenting Company De

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