Wind Energy Effective Utilization In The Built Environment

Under the circumstances of aggravating energy crisis, it is increasingly important to investigate and utilize the renewable and green energies for continuable development of society. As one of the clean and renewable energies, wind energy should be attached importance to the places where it is abundant. Wind power generation in the built environment can be used to the building itself or the local areas so as to avert power transportation. Theoretical analysis, numerical simulation and wind tunnel experiment are used to analyze the air flow around the buildings and the buildings'effects of intensifying wind speed in the built environment in this thesis。In this thesis, for three basic aerodynamic concentrator architecture patterns, such as bluff body,flat plate,diffusers, the utilization of wind energy is mainly discussed and studied. For bluff body pattern,architecture with concentrated wind wall are simulated at first, and the optimal concentrated wind wall pattern which can intensify the effects of wind concentration and wind energy utilization is gained. The location of concentrated wind wall is also optimized. Furthermore, the influences of building length and height and breadth on the effect of wind energy utilization are analyzed. Combined with meteorological conditions, the power generation conditions of the highest buildings in Shanghai,Hongkong,Guangzhou, inan are also analyzed. For the flat plate, different streamline channels located on flat plate are optimized, to be in favor of wind energy utilization of channel type. Based on simulation of wind environment around single streamline-shape building, two buildings,and six buildings of different layout which are of with the same size building are simulated, the optimal layouts which are beneficial to the effect of wind utilization are gained.Based on the theoretical analysis and numerical simulation, the building wind power wind tunnel are established, the diffusers building such as cube-shape and half column-shape and bluff bodies with concentrated wind wall are studied in wind tunnel. The results show that Roof of the building with a set of wind walls strengthen the wind effect and the effect of concentrating wind energy is best for the cube-shape and half column-shape pattern buildings built into the symmetry axis of 22.5 degrees. By comparing and analyzing the experimental data and the results of numerical simulation, we draw the conclusion that the experimental data is identical with the results of simulation that validates the accuracy of the numerical simulation and lays experimental foundation of study on wind energy utilization in the built environment.The laws of wind energy utilization in the built environment is studied by using the methods of theoretical analysis, numerical simulation and wind tunnel experiment, which is significant to the engineering practice.