24 Aug '17, 9pm

wind turbines on buildings? not a good idea: NREL Releases Report on “Urban Turbines” https://t.co/ONlOwX7Ius

wind turbines on buildings? not a good idea: NREL Releases Report on “Urban Turbines” https://t.co/ONlOwX7Ius

“Accurately assessing the wind resource in the built environment is perhaps the single most challenging element of a BEWT project….The current tools used for modeling the resource of small wind projects can have very high uncertainty in complex terrain. BEWTs are considered to be located in extremely complex terrain, and there is a demonstrated over-prediction of energy outcomes in the urban environment.” The report goes on to recommend complex—read: expensive—computational fluid dynamics (CFD) modeling as a possible means of understanding the wind resource at the proposed installation. “The challenge is that even the advanced models don’t capture the full array of flow physics and are expensive to run, potentially costing more than the wind turbine itself.” More reliable might be three-dimensional wind measurements at the exact location of the proposed installation for at...

Full article: http://www.ases.org/nrel-releases-report-on-urban-turbines/

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