Discussion on air conditioning and ventilation system mode for underground railway

In the air conditioning and ventilation system of underground railway, there are the platform-screen-door system and non-platform-screen-door system (referred to as closed system) depending on a platform-screen-door between the underground station platform and running tunnel. Each of them has advantages and disadvantages. The former is commonly used in the south area. Provides a composite mode which combines the advantages of the above two modes. With a project example, by daily energy consumption simulation and calculation, finds that the composite mode is the lowest in yearly energy consumption.