Install the equipment of the cooling pad ventilation in a workshop end to decrease temperature, then install the negative pressured ventilator in another end. The utilization of the ventilator to extract the workshop hot air going though the cooling pads, the temperature decrease effect. Finally this system creates comfortably, cool, the fresh working conditions.

According to the air convection principle, the natural convection and negative pressured air exchange are use to discharge the workshop internal heat air and the bad smell completely ; by installing in the location where has the fresh air in (front door or window). We may calculate the wind speed per second of the entire factory, how many times per hour the air, exchanges are. Any sultry and bad ventilation in the workshop can be improved.

Using the relayed forced ventilation principle, the hot and dirty air was expelled to outdoor. Fixed positioned fans or moved positioned fans are available.