Optimal layout of differential pressure apparatus of dust filters in civil air defence basement

Improper layout of differential pressure apparatuses has the possibility to make the dust filter work under non-rated condition, which may lead to low efficiency of dust filter, and even cause air pollution in the protection unit and damage lives inside the basement. Simulates the potential factors affecting the pressure distribution at the adjacent area of dust filter by CFD method, obtains the minimum distance between apparatus and dust filter, and presents the suggestions on optimal layout of the differential pressure apparatus, which provides theoretical basis for amendment of design code.