Entry Title: " W-Dalus new kind of wind/water"
Company:
,
Category: Professional, Concept
Designer(s): Meinhard Schwaiger


Entry Description:

1. Organization
IAT21 Innovative Aeronautic Technologies GmbH
Leitenbauerstrasse 10
A-4040 Linz, Austria
+43 732 244119
office@iat21.at
Dipl.-Ing. Meinhard Schwaiger: Inventor and General Manager
Julian Prll: Design and Renderings, Formquadrat GmbH

IAT21 is a private owned research company and developed the most innovative aerial vehicle "D-Dalus" (it is not a helicopter and not a fixed wing air craft) shown first time at the Paris Air Show this year.
At the heart of "D-Dalus" aircraft propulsion system lies a "cyclogyro" rotor assembly that converts power from a conventional motor into a forced airflow across aerodynamic blades. The reverse can be achieved. A modified rotor assembly can be used to capture wind energy or water energy and convert this into electricity.
This technology is high efficient for small wind turbines and water turbines even at lower flow speeds and will be commercialized in future from a new founded daughter company of IAT21.

2. Detailed explanation of the entry

a. What the entry is and its intended use
To reduce the Carbon-Dioxide emissions and speed up nuclear phase-out, the production and distribution of renewable energy is becoming increasingly important. Today's solar panels are not efficient enough and the number of hrs with sufficient sunlight is less than 1,700 a year in many countries. Big wind turbines and offshore wind parks cause enormous investments also in infrastructure and need high maintenance cost and cannot be installed in urban areas. Wind-speed is not constant and the wind speed distribution is described by the Weibull function. Standard wind turbines start rotation at wind speed of app 2.5 m/s and shut down at wind speed above 15 m/s in order to protect against destruction.
Energy yield increases to the cube of the wind speed. That means an increase in performance of the wind turbine by about a factor of 3.4 to 8, if the wind turbine is installed on the top of the roof and the special coverage of the wind turbine in combination with the roof, works like a wind speed accelerator.
Most of the known water turbines need higher and constant water flow speeds and infrastructure like dams.
I. W-Dalus / Wind Turbine
To eliminate most of the known disadvantages of existing wind turbines a new kind of a small wind turbine was developed and tested successfully in a big wind tunnel in Austria. In comparison to standard wind turbines the new developed one is quite different:
it can be installed as a horizontal or a vertical axis wind turbine
it can be installed on the top of the gable roof of houses
thanks an integrated spoiler (coverage) on the top of the wind turbine the roof area increase the wind speed by the factor 1.5 up to 2.0 and because energy yield increases to the cube of the wind speed and therefor the performance of the wind turbine increases by about a factor of 3.4 to 8!
to extend the range of exploitable wind speeds the special designed "splitted" airfoil combines a "high drag airfoil" in case of low wind speeds and a "high lift airfoil" in case of higher wind speeds
it can be installed as multiple units on flat roofs like those of supermarkets or industrial buildings
it can be combined with photovoltaic panels or solar heater panels
it needs less infrastructure
it can be simple installed locally and immediately used for disaster control, civil protection and emergency
it emits lower sound emission because of lower peripheral speed
it does not cause injury because of an integrated safety enclosure


Fig. 1: Wind speed distribution on the top of and around a house

Fig. 2: Small wind turbine installed as horizontal axis wind turbine on the top of the gable roof


Fig. 3: Small wind turbine installed as vertical axis wind turbine on the top of the gable roof



Fig. 4: Small wind turbine with "splitted" airfoil opened as "high drag airfoil" in case of low wind speeds

Fig. 5: Small wind turbine assembly with "splitted" airfoil closed as "high lift airfoil" in case of higher wind speeds

Fig. 6: Small wind turbine with safety guarding and combined with photovoltaic panels

II. W-Dalus / Water Turbine
To eliminate most of the known disadvantages of existing water turbines a new kind of a small water turbine on the principle of the cyclogyro rotor is in development. In comparison to standard water turbines the new developed one is quite different:
it can be installed as a horizontal or a vertical axis water turbine
it can be installed in rivers and streams like a buoy and fixed with ropes on banks or anchors
an outside covering like a spoiler on both sides and on top side increases the flow speed around the turbine approximately by the factor 1.5
to extend the range of exploitable water flow speeds the special designed "splitted" airfoil combines a "high drag airfoil" in case of low water-flow speeds and a "high lift airfoil" in case of higher water-flow speeds
it is floatable and can be transported by a boat in tow
it needs less infrastructure
it can be simple installed locally and immediately used for disaster control, civil protection and emergency
it does not cause injury because of an integrated safety enclosure


Fig. 7: Small water turbine ...
Compared to various types of hydro turbines a turbine based on the cyclocyro technology shows the best efficiency (see fig. 8).


Fig. 8: Comparison to other types of water turbines (source: http://www.akenergyauthority.org/OceanRiver/4-12-2010_HydrokineticTechConf/AKCyclogeneric500.pdf)

b. How the entry is manufactured and delivered to consumers
The small wind turbines are completely manufactured and assembled in Austria. The main parts like rotor blades, disks and shaft is produced in composite material, aluminum and stainless steel. Generator and electronic is standard and can be assembled and installed also locally.
The special designed water turbine is completely manufactured in stainless steel, aluminum and glass fiber composite material. Generator and electronic is standard and assembled and installed in our company in Austria.

c. How the entry exhibits excellence in sustainability and environmental responsibility
The small wind turbine produces locally and more efficient energy even at lower wind speeds than today's wind mills. If the wind turbine is installed on the top of a roof the usable wind speed increases. Because the energy yield increases to the cube of the wind speed an increase in power output by about a factor of 3.4 to 8 can be achieved!
It needs less infrastructure and no extensive investments in power lines. It emits less sound, creates less turbulences in the air and produces no moving shadow on the ground in comparison to big wind mills.

The new designed water turbine can be locally installed in rivers and streams without expensive investments in infrastructure. The water turbine produces locally and more efficient energy even at lower water flow speeds than today's water turbines. Water flow speed is increased by means of outside covering by factor 1.5 and power output increases therefore by factor 3.4 compared to standard free-flowing water turbines.

The wind-turbines as well as the water-turbines are produced for 100 % recyclability at the end of their lifetime.

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