Searched for:
(1 - 20 of 185)

Pages

document
Mutze, C. (author)
Wind energy is currently one of the fastest growing markets in the world. In the Netherlands the potential for onshore wind energy is not large because of siting problems. Therefore the focus in the Netherlands has shifted from onshore to offshore wind energy because the wind climate offshore is substantially better than onshore. For the Dutch...
master thesis
document
van Beveren, S.C. (author)
New wind turbines for placement in the urban environment appeared in the recent years. These urban wind turbines are still expensive; they produce electricity against higher costs then the current consumer’s price for electricity in the Netherlands. Another drawback for most of the new wind turbines is that they are too small for placement upon...
master thesis
document
Claessens, M.C. (author)
In recent years more focus is put on the applications of wind turbines in the urban environment. One of the ways to do this is using a turbine with a vertical axis (a VAWT). This type of wind turbines is around for many centuries. The modern equivalent which is based on lift producing blades only exists for 30 years. In this period airfoils for...
master thesis 2006
document
Soons, E.J. (author)
master thesis 2007
document
Vanhaeverbeke, S. (author)
Noise radiation is in certain countries still a major limitation on the further expansion of wind energy. Until now, the majority of the small wind turbines were sited in sparsely populated areas like open field far from inhabited regions. However, today the tendency exists towards integrating small wind turbines closer to populated areas....
master thesis 2007
document
Renkema, D.J. (author)
master thesis 2007
document
Politakis, G. (author)
The mechanics of aeroelastic instabilities is particularly important in relation to the next generation of wind turbine designs. Sizes approaching the 10MW capacity will have a rotor diameter somewhere in the order of 170m. This could mean much higher loads and more flexible blade designs than current MW wind turbines, most probably resulting in...
master thesis 2007
document
Gerbenzon, R. (author)
The Windstem is a horizontal axis wind turbine for the urban environment that flaps back and forth like a bird’s wing instead of turning full circles. A successful wind turbine of this type has not yet been made. It was investigated whether a wind turbine with a wagging blade, the Windstem, can be competitive at any location with other wind...
master thesis 2007
document
Van Rattinghe, K. (author)
The Earth’s climate is changing. A better understanding on the climate mechanism is essential for future sustainable development. As Antarctica has an important role in the Earth system, a new Belgian research station - named Princess Elisabeth - is currently under construction in the Sør Rondane mountains (Droning Maud Land, East Antarctica)....
master thesis 2008
document
Koutoulakos, E. (author)
Since the early 90s, wind energy industry has stepped offshore due to a number of interesting characteristics compared to onshore wind harvesting. At least when initially realized, offshore wind farms were not really different than onshore ones, since the same wind turbine technology with slight modifications was directly applied to the new...
master thesis 2008
document
Dixon, K.R. (author)
A 3D unsteady multi-body panel method is developed that can model arbitrary geometries. The method has been specifically designed so that it can handle the blade-wake interactions and viscous wake effects that are important for modelling a vertical axis wind turbine (VAWT). A systematic validation and verification of the model is presented...
master thesis 2008
document
Derks, A. (author)
Wind turbines grow bigger every day. With rotor diameters exceeding the size of a soccer pitch [I1][I3], it s not hard to imagine that designing such gigantic structures is a formidable task. The multidisciplinary nature of wind turbine design adds to the complexity of this task, as the subsystems of a wind turbine need to be tuned with respect...
master thesis 2008
document
Kotsarinis, C. (author)
The development of wind energy in the built environment is nowadays a growing industry, with several small companies developing different wind turbine designs. However, most of the designs introduced so far were proven to be unsuitable because of the complex urban wind conditions and because of the fact that the design of urban wind turbines is...
master thesis 2009
document
Kloosterman, M.H.M. (author)
A lot of research has been carried out in the past on wind turbine wake aerodynamics. Models exist for both the near field and the far wake. The near wake is governed by a typical vortex structure that gradually decays due to viscous and turbulent mixing effects, forming the less structured far wake region. The formation of the far field from...
master thesis 2009
document
Chaves dos Santos, N.P. (author)
Microgeneration is a growing type of energy conversion used for generation of electricity in built environments such as urban areas. Among the different microgeneration technologies present in the market, small wind turbines have been showing a significant growth. The significant dissemination of its use and production and safety issues that...
master thesis 2009
document
Venora, A. (author)
The wind speed profile in a marine environment is investigated using the data provided from the German offshore research platform FINO-1 and the meteorological mast of the Dutch offshore wind park Egmond aan Zee. The data are compared to the Monin-Obukhov Similarity Theory using the Richardson Bulk Method, the Richardson Gradient Method and the...
master thesis 2009
document
Borbón Guillén, F. (author)
A design tool has been developed with the aim of helping in the wind farm design process. The tool is able to handle rectangular layouts with any number of turbines. Wind farm power, as well as wind and site conditions can be specified by the user. The main tool models are described and the developing steps have been detailed. Results of tool...
master thesis 2009
document
Ten Hoopen, P.D.C. (author)
The Diffuser Augmented Wind Turbine (DAWT) has been studied periodically over the last five decades. It has already been established by the scientific community that the DAWT is superior to conventional bare wind turbines. In spite of this, the DAWT has not gained popularity worldwide due to high manufacturing cost of the diffuser. There are two...
master thesis 2009
document
Zwang, L. (author)
master thesis 2009
document
Geurts, B.M. (author)
With the increasing size and complexity of wind turbines, also the risk of failure of a crucial component increases. The expected fatigue life of certain subcomponents is an important design requirement. Fatigue damage is triggered by a periodic loading of the construction. The number of load-cycles (and thus the lifetime) and the amplitude of...
master thesis 2009
Searched for:
(1 - 20 of 185)

Pages