How to choose the appropriate negative pressure fan to cool the plant?

 1, type, according to the workshop emissions selection: Different industries of the workshop emissions of different gases, which will affect the choice of negative pressure fans. According to the overall situation of the current market, the negative pressure fans on the market are mainly divided into two kinds of materials, one is the negative pressure fans made of FRP anti-corrosion material, the other is the negative pressure fans made of galvanized sheet metal. If the emissions of the workshop contain acid, alkali and corrosive gases, the reasonable measure is to choose the negative pressure fan made of FRP anticorrosive material; If the emission of gas temperature is not high and not corrosive, then choose ordinary galvanized metal negative pressure fan can be; 2, quantity, according to the size of the workshop selection: The volume size of the workshop affects the number of negative pressure fans installed, which is also related to the size of the exhaust air volume and power of a single fan (a single exhaust air volume of 42000 cubic meters/hour). It is suggested that the number of negative pressure fans installed should match the volume size of the workshop as far as possible. If the volume of the workshop is large, the number of negative pressure fans is small, and the ventilation and cooling effect is greatly discounted; If the number of negative pressure fans is too much, the gains outweigh the losses. It is an unnecessary measure and also increases the economic burden on enterprises. 3. Choose according to economic ability: As mentioned above, if the workshop pumps corrosive gases, try to choose glass fiber reinforced plastic negative pressure fan. In fact, the cost of glass fiber reinforced plastic anti-corrosion negative pressure fan is higher than that of galvanized metal negative pressure fan. Therefore, if you have a sufficient budget, choose glass fiber reinforced plastic anti-corrosion negative pressure fan. Glass fiber reinforced plastic negative pressure fan is durable and has a long service life than galvanized sheet negative pressure fan. Negative pressure fans are made of fiberglass, and affordable, great value for money!