Micro–scale simulation of atmospheric emissions from power–plant stacks in the Po Valley

Developmental Biology

Sara Fabbi¹  Alessandro Bigi¹  Grazia Ghermandi¹  Marco Zaccanti¹  Sergio Teggi¹ 

[1] Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Via Vignolese 905, 41125 Modena, Italy$$

关键词: Micro–scale simulation;    urban canopy;    plant stacks;    low wind;    measured concentrations;   

DOI  :  10.5094/APR.2015.042

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

The atmospheric dispersion of the NO_X plume that will be emitted from a new power–plant, at present under installation, was simulated at micro–scale with Micro–Swift–Spray (MSS) Model. The plant will be constructed in a residential urban area in the town of Modena (Po Valley, Northern Italy), where low wind speeds and thermal inversions are quite frequent. Simulation results point out a different behavior of urban canopy in influencing the 3D dispersion patterns among urban obstacles, according to atmospheric mixing conditions: in case of moderate wind events, urban canyon phenomena may occur with a consequent increasing of NO_X concentration gradients among buildings, while with low winds the near–field influence of the buildings emphasizes pollutant accumulation. The MSS simulated NO_X concentrations result always much lower than the regulatory limits for air quality. The comparison of simulation results with measured concentration data for NO_X shows the importance of micro–scale dispersion modeling to perform an accurate and reliable assessment of meteorological condition effects on pollutant distribution, and the ability of MSS in providing reliable simulations of atmospheric dispersion.

【 授权许可】

Unknown   

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