Selection of negative pressure fan:
When choosing a negative pressure fan, you must consider its purpose, the maximum vacuum required, the power and flow required, and the air exchange rate required per cubic meter. Seconds, how much installation space is there and where to install it.
Negative pressure fan parameters:
The frequency of model HD-1000 negative pressure fan is 50Hz, motor speed ≥1400r/min, air volume 32000m3/h,
Input power 750Kw/h, noise ≤64 decibels dB, rated voltage 380V
Negative pressure fan:
Negative pressure fan uses the cooling principle of air convection and negative pressure ventilation. It is a machine that naturally inhales fresh air from the door or window facing the installation site, and quickly and forcefully discharges the hot indoor gas to the outside. Any poor ventilation problems can be improved, and the cooling and ventilation effect can reach 90%-97%. .
The ventilation principle of the negative pressure fan:
The negative pressure fan discharges air to the outside to reduce the indoor air pressure, and the indoor air becomes thinner, forming a negative pressure area, and the air flows in due to the compensation of the air pressure difference. indoor. In practical applications in industrial plants, negative pressure fans are centrally installed on one side of the plant, and the air inlet is on the other side of the plant. The air flows from the air inlet to the negative pressure fan to form convection. During this process, the doors and windows near the negative pressure fan remain closed, and the forced air flows into the workshop through the door and window compensation on the side of the air inlet. The air flows into the workshop from the air inlet in an orderly manner, flows through the workshop, and is discharged from the workshop by the negative pressure fan. The ventilation is thorough and efficient, and the ventilation rate can be as high as 99%. Through specific engineering design and designing the ventilation speed and wind speed as needed, any high heat, harmful gases, dust and smoke can be quickly discharged from the workshop, and any poor ventilation problems can be completely solved at one time. The ventilation effect can be achieved within a few seconds of turning on the fan.
The ventilation principle of negative pressure fans:
Ventilation and cooling: Due to the sunlight shining on buildings, machinery and equipment, human bodies and other heat sources, the temperature in places that need ventilation is higher than outside. The negative pressure fan can quickly discharge the indoor hot air, keeping the room temperature equal to the outside temperature, and preventing the temperature in the workshop from rising.
Air flow takes away body heat. Air flow accelerates the evaporation of sweat and absorbs body heat, thus making the human body feel cool, as cool as the natural wind.
The negative pressure fan only has the function of ventilation and cooling, but has no refrigeration function. Coolness is the feeling of the human body. It is ignorant to say how much the temperature can be lowered by a negative pressure fan.
Used in conjunction with the water curtain, the temperature in the workshop can be controlled within 28 degrees Celsius during the hottest period of summer. However, the cooling feeling of the human body is comparable to that of an air conditioner. People who face the water curtain for a long time will feel cold and intolerable.