Building energy-saving efficiency is great economic significance to industrial plants, which can effectively save costs for building plants and improve economic benefits. Actual investigations in many industrial plants show that due to the imperfect structure of the roof louver vent of the plant, the strong air infiltration generated through the window gaps has caused a lot of heat loss. In order to effectively reduce the heat loss, Mcwell's R&D team proposed a new sealing method for the natural ventilation system.

When using a rubber hose to seal the roof louver vent, compressed air enters the pipe with a pressure of 0.03-0.05mpa. Use glue to stick the rubber hose on the fixed window position of the roof smoke vent, and use this pipe which inject compressed air to replace the commonly used rubber sealing strip, which can achieve a better sealing effect.

One section of the hose is connected with a steel air distribution pipe, and the other end is 30-40mm away from the window sash, and this end is compressed and sealed, and compressed air is supplied to the system through a switch to achieve a sealing effect. After the heating and daylighting period is over, turn off the switch to prevent and remove the residual air in the hose to achieve the effect of ventilation and smoke exhaust. The air supply pressure of an air compressor station is usually 0.8-1.0mpa, and a pressure reducing valve is set in the distribution system for pressure reduction treatment.

In addition, one investment of the sealing device can be recovered within one year. Otherwise, due to the low outdoor temperature, part of the pipe section may freeze, which will cause the sealing failure, which requires us to pay special attention.