The roof louver vent uses the temperature difference effect to exhaust the dirty air to the outside, and the fresh air from the outside is replenished to the room through the flow, so as to keep the indoor air environment in line with the standard and meet the needs of the production process. Low-profile ventilator and streamlined natural ventilator are the most common types that have been put into use in many modern steel-structured factories.

The main tasks of roof louver vent are: dilute and circulate the air in the building to reduce the concentration of harmful gases; add fresh air to the room to meet people's demand for oxygen; control industrial harmful substances, that is, control the dust and harmful gases generated in the production workshop Or steam, residual humidity, residual heat.

General civil buildings and some small industrial plants with low heat generation and slight pollution usually only require keeping the indoor air clean and fresh, and improving the indoor air parameters (temperature, humidity, cleanliness, flow rate) to a certain extent, Only general ventilation is required, and no special treatment is required for intake and exhaust. It can be used to ventilate through doors and windows, reduce the temperature of the hall, and increase the airflow speed by electric fans.

Many industrial production workshops emit a large amount of heat, humidity, industrial dust, harmful gases and steam during the production process. Therefore, protective measures are taken to create good working conditions, eliminate the health hazards to workers, and ensure the normal production process. Natural roof ventilation has no power consumption, use aerodynamics to achieve the purpose of ventilation, while taking into account the lighting function, reduce enterprise power consumption, improve the working environment of workers, and increase work efficiency. It is an excellent choice for industrial enterprises to build large-scale factories.