The Application of Dissipative Structure Theory in Evaluation of Urban Air Quality
How to advance and evaluate accurately UAQ has been an important problem in HVAC and environment field. Urban air environment is a composite system of society and nature, and is a dissipative structure. By analysis, the evaluation indexes system, which takes the total amount of suspending granules, sullur dioxide, nitrogen dioxide as reference indexes, and the air synthetic pollution index as verifying index, has been established in this paper. Based on dissipative structure theory and Shannon entropy principle, a quantitative model of urban air quality evaluation has been set up. Based on shannon entropy, the weights of every evaluation index has been calculated. Furthermore, the synthetic value of urban air quality has been calculated by combing with standardization values of all indexes. The synthetic value could be applied to identify the level and synthetic quality of urban air environment. Employing the instance method, the changing trends and the unitary qualities of 31 main cities UAQ from 2003 to 2007 have been analyzed. The disadvantageous index of every city has been shown out. At the same time, it is relatively inosculating when compare the air synthetic pollution index in 2006 with the synthetic value calculated in this paper. The analysis results will provide scientific decisionmaking for improving urban environment quality of city. Analysis results show that the method established in this paper can be applied in evaluation of urban air quality.
Dissipative structure Shannon entropy Urban air quality Evaluation Air synthetical pollution indez
Furen Zhang Hui Zhang Panpan Deng
School of Mechanical and Electrical Engineering,Chongqing Jiaotong University,Chongqing,China Key La School of Mechanical and Electrical Engineering,Chongqing Jiaotong University,Chongqing,China Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment,Ministry of Education. Chongqi
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
826-832
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）