Analysis of the state of the air environment in the underground parking

Saint Petersburg State University of Architecture and Civil Engineering, Vtoraja Krasnoarmeyskaya st., 4, 190005 Saint-Petersburg, Russia, Saint Petersburg, Russia

^* Corresponding author: tdatsuk@mail.ru

Abstract

Preserving the ecological comfort of the urban environment forces architects to look for compromise solutions. One of them is the development of underground urbanism not only for transport infrastructures, but also for public buildings. In this case, environmental issues are relevant. The air quality in underground parking lots and in the adjacent area must comply with environmental standards. Underground parking lots are local sources of pollution. Therefore, during the construction of parking lots, design solutions should be carefully analyzed, especially ventilation issues. An effective method is mathematical modeling. The article considers the use of numerical simulation for the organization of ventilation using jet ventilation. The results of numerical simulation of a system of differential equations describing the processes of heat and mass transfer using a modern system of jet ventilation are presented. The use of jet fans makes it possible to ensure the permissible concentration of CO in the exhaust shafts. It is substantiated that the choice of locations for jet fans should be based on the analysis of velocity fields and concentrations of harmful substances. The article considers the features of jet ventilation in underground car parkings. The results of a numerical simulation of a system of differential equations describing heat and mass transfer processes using a modern jet ventilation system are presented using the example of an underground parking.