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김문찬,김문찬 류효상 청주대학교 2009 産業科學硏究 Vol.27 No.1
In this study, air quality was investigated around the local/highway bus terminal area at Cheongju City by using ISC3 model. THC was selected as pollutants. The amount of exhaust emissions were calculated by the engine emissions of driving and idling, on the assumption that idling times were 5, 10, 20, 30 minutes, respectively. Air quality concentrations were simulated by the yearly mean values which were in the morning, in the afternoon and in the night. As the result of the verification and the calibration for the model accuracy, the correlation coefficients were above 0.77. Therefore, ISC3 model was suitable for this area. In the result of air quality using ISCLT3, the average concentration of THC during engine driving was 49.86 ppb. The average concentration of THC for 5 minutes engine idling was 52.13 ppb. Comparing with these results, the emissions from engine idling were more deteriorate air quality than that from engine driving. The range of influence that engine emissions affected terminal area at Cheongju City, was larger in the morning than in the afternoon. In the night, the range of engine emission influence was largest.
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ISC3모델을 이용한 버스터미널 주변의 질소산화물 농도 예측
김문찬,류효상 청주대학교 산업과학연구소 2008 産業科學硏究 Vol.26 No.1
In this study, NOx concentration was investigated around the local/highway bus terminal area by using ISC3 model. NOx concentrations were simulated by the yearly mean values which were in the morning, in the afternoon and at night. As the result of the verification and the calibration for the model accuracy, the correlation coefficients was 0.94. Therefore, ISC3 model was suitable for this area. In the result of NOx concentration using ISCLT3, the average concentration of NO2 was 13.05 ppb. The range of influence that engine emissions affected terminal area, was larger in the morning than in the afternoon. Because mixing height was higher in the afternoon than that in the morning, so emissions were diffused toward upper ambient air that range of engine emission influence was narrow. At night, the range of engine emission influence was the largest in a day. Because mixing height was the lowest at night. So horizontal diffusion was dominated than vertical one.
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