Atmospheric Environmental Impact Simulation of Gas Fired Boilers as Peak Load Heat Sources |
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作者姓名: | WANG Hai chao JIAO Wen ling and ZOU Ping hua |
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作者单位: | School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, P. R. China;School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, P. R. China;School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, P. R. China |
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摘 要: | Heating with gas can reduce air pollutant emission and therefore becomes a new sort of peak load heat source. To study the atmospheric environmental impact, we adopted a newly built combined heating system and simulated its pollutant dispersion for centralized and distributed peak heating. The simulations were based on the improved regulatory environmental impact assessment (EIA) guidelines for atmospheric environment. The model developed an algorithm for infill wind direction simulation and exported pollutant contours for comparisons. Simulation results show that the system's atmospheric environmental impact is related not only to the pollution emission quantity per quantificational heating, but also to the distribution of heat resource in the gas fired boilers. The centralized peak heating has comparatively small environmental impact; for distributed peak heating, the more concentration of gas fired boilers distribution is applied, the more serious environmental impact will be. In addition, the optimum setting proportion of gas fired boilers should be between 0.2 and 0.6 from the perspective of environmental impact.
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关 键 词: | environmental impact combined heating system peak load heat sources pollutant dispersion gas fired boilers the optimum setting proportion |
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