Ventilation system is a kind of construction environment control skill, which can control the diffusion and damage of air pollutants by means of ventilation dilution or ventilation. Ventilation system is to complete the function of ventilation, including air inlet, air outlet, air supply duct, fan, cooling and heating, filters, control systems and other subordinate equipment, including a complete set of equipment.

    To monitor the volume accurately, the need for accurate collection of the actual situation in the wind tunnel airflow, pressure equipment here it is mainly based on experience, choose the pressure equipment in China Mining University Professor Hu Yafei created pressure equipment, like the air duct section contains equaler, after fixation fixed in the air duct wind tunnel wall, equaler settle with a plurality of pressure head pressure head perpendicular to the duct, and the end is parallel to the flow direction, the pressure signal of pressure tube after manometric catheter extraction.