一：Product introduction:
Negative pressure fan is the latest type of fan, belongs to the axial flow fan, because it is mainly used in negative pressure ventilation cooling project and called negative pressure fan. The negative pressure ventilation cooling project contains two aspects of ventilation and cooling, and the ventilation and cooling problems are solved at the same time.
Negative pressure fan is also used in positive pressure type water curtain environmental protection air conditioning, positive pressure air supply, positive pressure blower and other fields. The negative pressure fan has the characteristics of huge volume, super large air duct, super wind blade diameter, super exhaust air volume, ultra-low energy consumption, low speed, low noise and so on.
Negative pressure fan is the use of air convection, negative pressure ventilation cooling principle, is a kind of installation site from the opposite - the door or window naturally inhale fresh air, the indoor hot gas quickly forced out of the outdoor, any poor ventilation problems can be improved machine, cooling ventilation effect can reach 90%-97%.
二：The powerful advantages of negative pressure fan:
1, less investment, low energy consumption. The same refrigeration rate, the one-time investment is about one-sixth of the air conditioning, the operating cost is about one-tenth of the air conditioning;
2, the cooling effect is significant, can reduce the temperature to about 28 degrees, consistent with the human body temperature, if the water with the well as the water tank source effect is better, can compare to the effect of air conditioning;
3, the air is fresh and moist, and the air cleanliness can reach 99%.
三：Cooling principle
Ventilation cooling: due to sunlight irradiation of buildings, machinery and equipment, human body and other heat sources, the temperature of the place that needs ventilation is higher than that of the outside. The negative pressure fan can quickly discharge the indoor hot air, so that the room temperature is equal to the outside temperature, and the temperature in the workshop will not rise.
The air flow takes away the body heat, and the air flow accelerates the evaporation of sweat and absorbs the body heat, thus making the body feel cool, as cool as the natural wind.
The negative pressure fan only has the effect of ventilation and cooling, and there is no refrigeration function, and cool is the feeling of the human body. It is ignorant to say how much the negative pressure fan can reduce the temperature.
When used with the water curtain, the temperature in the workshop can be controlled within 28 degrees Celsius in the hottest time of summer. However, the cool feeling of the human body can be compared with air conditioning, and people who spend a little time in front of the water curtain will feel cold and cannot stand it.
