Optimal ventilating parameters of push-pull flow dust control in large spaces

For dust control of large spaces, puts forward a bilateral push-pull ventilation system to control bursting dust source of a large unloader. Through the establishment of experimental device and test, analysis of a variety of impacting factors on dust collection efficiency, and orthogonal experimental studies, obtains the multiple regression formula of collection efficiency and limit values of flow. Simulates dust pollution of the unloader by fog generating, and verifies the empirical formula in some specific conditions. Obtains the economic formula which guide the design of bilateral push-pull ventilation system when considering economic volume of ventilation in two situations.