Abstract
Large cities have a significant area of buildings with roofs that are not used most of the time. Vertical-axis wind turbines are suitable for this kind of on-site renewable energy generation. Since wind speeds are not high in these cities, a suitable solution to improve energy generation is to add a Wind Booster. This paper presents a methodology useful for selecting and optimizing the main components of a Wind Booster. As a case of study, we present this methodology in a Wind Booster for a Vertical Axis Wind Turbine (VAWT) that considers the wind flow’s specific behavior in a particular city. The final Wind Booster design is state of the art and makes use of Computational Fluid Dynamics (CFD) and Design of Experiments (DOE) techniques. We experimented with the conditions of Mexico City, obtaining a 35.23% increase in torque with the optimized Wind Booster configuration. The results obtained show the potential of this methodology to improve the performance of this kind of system. Moreover, since wind behavior is very different in each city, our proposal could be beneficial for researchers looking to implement the best possible wind turbine in their locality.
Highlights
Renewable energy generation is becoming an issue of crucial importance, due to the increase in pollution from the use of fossil fuels, stemming from the first industrial revolution, causing an increase in the demand for renewable energy
First, we selected a Vertical Axis Wind Turbine (VAWT) and we reviewed the state of the art of Wind Boosters (WBs) for the VAWT
The selection of these dimensions has the purpose of installing the VAWT on the roof of the city buildings and produce a certain amount of on-site renewable energy
Summary
Renewable energy generation is becoming an issue of crucial importance, due to the increase in pollution from the use of fossil fuels, stemming from the first industrial revolution, causing an increase in the demand for renewable energy. Extracting energy from renewable sources close to populated areas where power is required is known as on-site renewable energy generation [4] This approach has been studied in several works [5,6,7,8,9,10]. HAWTs are the most common and efficient method since they exploit more wind energy due to the design of their blades (from 1 to 3) They require high wind speeds, a strong tower to support the weight of the gondola, and the installation cost is higher, in addition to requiring orientation systems since the forces do not tend to guide it naturally. On the contrary [16], VAWTs have the advantage of not needing orientation systems and having lower cost of construction, installation and easier maintenance, low noise and angular velocity in operation, reduced wear on moving parts, various rotor configuration options, and high static and dynamic moments
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