Tipo de Publicación:
Small vertical axis Darrieus Turbines present several advantages over those of horizontal axis: omnidirectionality, electromechanical heavy parts at floor level among others. Taking this into account the present work proposes the development of Darrieus Turbines for urban applications. A building project should consider installation of wind turbines and other renewable generation to improve efficiency. The methodology proposed starts calculating the energy demand and daily power of the usual services of the building. Then wind behavior must be studied on the terrace of the building. This is made by means of buildings scale models in wind tunnels applying the laws of similarity. Then results are compared with simulations in CFD on the shape of building and same data. Then wind technology analysis is applied. As a result, Darrieus Turbines are selected. Depending on the possible places of installation and the design parameters, main characteristics are calculated (rotor size, number of turbines, number of blades, optimized profile, etc.). With the size and number of turbineson the roof, the percentage of common services demand of the building connected to wind energy can be calculated. Also, it is possible to integrate photovoltaic systems (in parasols, terraces, etc.) according to the orientation of the building and hydraulic mini-turbines by means of gray water. In some cases, integrating wind energy with solar and mini-hydraulics can cover up to 70% of the energy in common spaces in cogeneration with the network. In this way it is possible to significantly reduce the expenses of buildings inhabitants.