Tunnel ventilation simulation of the City Ring in Prague

摘要

Solving the ventilation system of the road tunnels, which are parts of the City Ring in Prague, is a major project. Under the environmental, hygienic and safety requirements, the project of the ventilation and control system is floated. The part of the project is the identification of the designed system and formulation of the simulation algorithm. By means of this algorithm, feedbacks of influences to tunnel and ventilation system are found. At the same time the weight is laid on the economic operation of fans because of their longer service life. The system control is realized on the basis of physical quantities measured in the tunnel, the quality of environment both inside and outside the tunnel and the knowledge of the systems dynamics. Main objects of the whole project are: not to exceed limits set by the law, but to ensure the user's safety as much as possible and optimize the ventilation system's control within the frame of good environment's quality outside the tunnel and economic factors.