Negative pressure ventilation method using water curtain wall in Dongguan clean room
(1) Since the water curtain wall of Dongguan cleanroom occupies most of the window area, the general daylighting will be seriously affected, which increases the cost of indoor lighting and the fatigue of employees working under unnatural light.
(2) Large area of paper yellow water curtain wall installed on the wall
It is difficult to coordinate with the exterior wall, causing aesthetic damage, especially the dirty surface that is difficult to clean after one or two years of use, which is indecent and very unhygienic, so it is difficult for general new factories or companies that pay attention to appearance and image to accept.
(3) Wind, sun, rain, and the height of the water curtain have an impact on the life of the wet water curtain, which will increase future costs, and generally cause the indoor floor or window sill to drift and wet.
(4) This negative pressure ventilation method requires all doors and windows to be closed, otherwise a large amount of air directly enters through the doors and windows because there is no wind resistance, which affects the overall cooling. In practice, it has been found that many workshops are frequently in and out of goods or personnel, or are not sufficiently sealed, which The effect is greatly reduced. Few companies use high-pressure spraying instead of water curtain walls. Although this method reduces costs and avoids the disadvantages of water curtain walls, it is difficult to control automatically, which may cause the air to saturate and prevent water mist when the external humidity increases. It is absorbed by the air and wets the equipment and products in the workshop. In addition, high-pressure spray can easily cause blockage, so subsequent maintenance costs are high.