针对建筑物群内风能应用问题,采用CFD方法,对建筑密度分别为26%、20%、18%、16%、14%的5种建筑物群周围风速和湍流强度特征开展研究,分析建筑密度对建筑物群内风力机合理安装位置的影响方式。结果表明：在低于1.5H高度范围内,建筑物群的建筑密度越大,同一安装高度上适合于安装风力机的区域就越大,即越有利于建筑物群内风能的应用;在高度高于1.5H后,建筑密度对建筑物群内风力机安装位置的影响消失;无论建筑密度大小,在低于1.2H的高度范围内,建筑物群内不适合安装风力机;在高度高于1.45H后,可优先考虑将风力机安装于建筑物群内中间一排建筑物顶面,在建筑物顶面可优先将风力机安装于拐角位置;5种建筑密度的建筑物群内只考虑风速要求即可确定风力机的合理安装位置。
Abstract
To determine the suitable mounting location of the wind turbine in building arrays with area density of 26%, 20%, 18%, 16% and 14%, respectively, wind velocity and turbulence intensity over the aligned building arrays with flat roof were simulated via the computational fluid dynamic （CFD） method. Results from this investigation shown that within the height range of less than 1.5H, the larger the area suitable for installing wind turbines at the same installation height with the higher area densities in the building arrays, which is more conducive to the application of wind energy in the building arrays; Meanwhile, For the height is higher than 1.5H, the influence of the area density on location of wind turbine can be ignored; When the height is lower than 1.2H, it is not suitable to install wind turbines in the building arrays with five area density. Moreover, for the height is higher than 1.45H, wind turbines should be installed on the top of the middle row of buildings in the building arrays, while the corner of the rooftop are the best installation locations; In addition, the installation location of wind turbines can be determined by only considering the wind speed in the building arrays with five area densities.
关键词
风力机 /
建筑物 /
瑞流强度 /
风速 /
微观选址
Key words
wind turbines /
building /
turbulence intensity /
wind speed /
micro siting
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参考文献
[1] STATHOPOULOS T, ALRAWASHDEHA H, Al-QURAAN A, et al.Urban wind energy: some views on potential and challenges[J]. Journal of wind engineering & industrial aerodynamics, 2018, 179: 146-157.
[2] ANUP K C, JONATHAN WHALE, TANIA URMEE.Urban wind conditions and small wind turbines in the built environment: a review[J]. Renewable energy, 2019, 131(1): 268-283.
[3] TOJA F, COLMENAR S A, CASTRO G M, et al.Urban wind energy exploitation systems: behaviour under multidirectional flow conditions—opportunities and challenges[J]. Renewable and sustainable energy reviews, 2013, 24: 364-378.
[4] TOJA-SILVA FRANCISCO, LOPEZ-GARCIA OSCAR, PERALTA C, et al.An empirical-heuristic optimization of the building-roof geometry for urban wind energy exploitation on high-rise buildings[J]. Applied energy, 2016, 164: 769-794.
[5] LEDO L, KOSASIH P B, COOPER P.Roof mounting site analysis for micro-wind turbines[J]. Renewable energy, 2011, 36(5): 1379-1391.
[6] ABOHELA I, HAMZA N, DUDEK S.Effect of roof shape, wind direction, building height and urban configuration on the energy yield and positioning of roof mounted wind turbines[J]. Renewable energy, 2013, 50(2): 1106-1118.
[7] DAYAN E.Wind energy in buildings: power generation from wind in the urban environment—where it is needs most[J]. Refocus, 2006, 7(2): 33-38.
[8] BLACKMORE P.Building-mounted micro-wind turbines on high-rise and commercial buildings[R]. Watford: BRE, 2010.
[9] KONO T, KOGAKI T, KIWATA T.Numerical investigation of wind conditions for roof-mounted wind turbines: effects of wind direction and horizontal aspect ratio of a high-rise cuboid building[J]. Energies, 2016, 9: 907.
[10] WANG B, COT L D, ADOLPHE L, et al.Estimation of wind energy of a building with canopy roof[J]. Sustainable cities and society, 2017, 35: 402-416.
[11] WANG B, COT L D, ADOLPHE L, et al.Estimation of wind energy over roof of two perpendicular buildings[J]. Energy and buildings, 2015, 88(2): 57-67.
[12] ZHOU H, LU Y J, LIU X D, et al.Harvesting wind energy in low-rise residential buildings: design and optimization of building forms[J]. Journal of cleaner production, 2017, 167: 306-316.
[13] 侯亚丽, 汪建文, 王强, 等. 建筑物群内屋顶形状对屋顶风力机微观选址的影响[J]. 机械工程学报, 2018, 54(2): 191-200.
HOU Y L, WANG J W, WANG Q, et al.Influence of roof shape on micrositing of rooftop wind turbine in the building group[J]. Journal of mechanical engineering, 2018, 54(2): 191-200.
[14] WHITE L V, WAKES S J.Permitting best use of wind resource for small wind-turbines in rural New Zealand: a micro-scale CFD examination[J]. Energy for sustainable development, 2014, 21(8): 1-6.
[15] 朱颖心. 建筑环境学[M]. 第四版, 北京: 中国建筑工业出版社, 2016.
ZHU Y X.Built Environment[M]. Fourth edition, Beijing: China Architecture & Building Press, 2016.
[16] HANNA S R, TEHRANIANA S, CARISSIMOA B, et al.Comparisons of model simulations with observations of mean flow and turbulence within simple obstacle arrays[J]. Atmospheric environment, 2002, 36(32): 5067-5079.
[17] IEC 61400-61401, Wind turbine generator systems-Part 1:safety requirements[S].
基金
内蒙古自治区自然科学基金（2019LH05024）
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