| Environmental problems in China, especially in northern areas, is very serious.it hasbecome a national strategy to address climate change and implement low-carbondevelopment in China. the rail transportation as a relatively new mode of transport isplaying a more and more important role to reduce urban pollution and alleviate urbantraffic congestion.the total power consumption of rail transport is so big that there arestill great potential for energy savings. Therefore it becomes so necessary to improveenergy utilization in the process of the construction and operation of rail transportation.Firstly, the paper analyzes the ventilation system of the underground site inChongqing to find out the problem. it also confirms the necessity and feasibility of theuse of natural wind of rail transit in Chongqing.Secondly, it introduces the natural wind-related knowledge, analyzes the utilization ofnatural wind of underground sites in Chongqing rail transit. It also uses the theory ofventilation engineering combined with the actual use of natural wind to put forward thecalculation mode of the natural ventilation effects of rail transit underground site inChongqing.Thirdly, it takes the Nan ping site of the3line of Chongqing rail transit for anexample, it is also through on-the-spot investigation Nan ping site for the utilization ofthe natural wind to find out the problem, and through calculation of the model to putforward the optimization of Nan ping site, thus improve its use efficiency of naturalwind so as to achieve energy saving purpose.Finally, it presents the shortcoming of this study and the outlook for future studies.according to the writing process... |