The external shape and internal structure of the roof smoke vent greatly enhance the exhaust efficiency of the roof air building, prevent backflow of wind, and allow adsorption force when the outdoor wind blows through, and accelerate the internal exhaust of the factory area. The ridge ventilator can be installed on the cast-in-place concrete roof, or on the large roof panel and the profiled steel roof. The ridge ventilator has various models and is suitable for all kinds of industrial plants. There are three main types of smoke vent rooflight in Mcwell, namely MCW1 roof louver vent, MCW2 natural vent and MCW5 ridge ventilator. The three smoke vent rooflight has their own advantages and characteristics. It is a widely used category in gas building engineering examples. The roof smoke vent has large ventilation volume and high ventilation efficiency, but at the same time it is also affected by some factors:

1. The temperature difference between indoor and outdoor. Indoor temperature>outdoor temperature.

2. Outdoor wind speed. If the overall design of the roof air tower is reasonable, the ventilation efficiency can be increased.

3. The location of the air inlet. The installation position of the air inlet should be as low as possible.

4. The average height difference between the air inlet and the exhaust outlet of the gas building should be maximized as much as possible.

5. The relative position of the air outlet and the heat source. The angle between the connecting line and the plumb line is less than 100.

6. The ratio of the area of ​​the air inlet to the area of ​​the air outlet. The highest benefit ratio of the area ratio of the two is 150:100.