Application of air duct in workshop

Application of Bag Air Duct in high temperature workshop

The insulating bag Air Duct is a kind of air conveying and air distributing system made of fiber material. The system integrates the static pressure box, thermal insulation material, ventilation duct, air outlet and air valve into a multi-functional whole, utilizing the gap on the fiber, and different forms of nozzles or slit air supply holes will be uniform and flexible air flow to the designated air region. The waterfall insulation cloth bag air pipe has the characteristics of uniform air supply, large air volume, no air blowing feeling, anti-condensation, easy clean maintenance, health and environmental protection, etc. .

The insulation cloth bag air duct adopts the air outlet mode with displacement ventilation effect, and sends the fresh air after heat and moisture treatment directly into the indoor personnel activity area, the fresh air flows downwards with the convective air to form the dominant airflow of indoor air movement. The air outlet is arranged at the lower part of the workshop to remove the polluted air, which belongs to the air distribution mode of“Sending up and discharging down”.

The characteristic of the workshop is that the pollutant comes with the heat source, the space is big and the heat load is not too high. Different from the mixing dilution principle of the traditional mixed ventilation, the displacement ventilation is by sending the fresh air with lower wind speed into the personnel working area, utilizing the principle of extrusion, a type of ventilation that squeezes polluted air into an upper space or into a lower space before discharging it.

 Displacement ventilation has advantages in ventilation efficiency, ventilation efficiency, indoor air quality and energy-saving, and has great energy-saving potential. Displacement ventilation involves many factors such as temperature distribution, concentration distribution, wind velocity distribution, air distribution and so on, which makes the design of displacement ventilation difficult to grasp. In this paper, the principle of displacement ventilation is deeply studied, and the design method of displacement ventilation is summarized, and the use of advanced air flow simulation software and air flow simulation laboratory to support the design of displacement ventilation, can control the temperature and humidity of the working area and the concentration of pollutants can be effectively controlled.

 The insulation cloth bag air duct is a new type of ventilation method, which is more and more widely used in the workshop. The application results show that the air quality in the workshop has been obviously improved, it can solve the problem of uniform cooling in the workshop.