The negative pressure fan only uses negative pressure to ventilate, the physical principle of air convection reduces the temperature, there is no refrigeration compressor, only the air flow is used to cool the surrounding air, and the cooling effect is greatly related to the installation volume, air volume, design, installation location, etc. , So no one can tell exactly how much the reduction has been made. If anyone can simply tell you how much it has cooled, then he is fooling you!

Installing a negative pressure fan in the workshop is just like installing an air conditioner. Ask the air conditioner or the air conditioner how much the environment can cool down. I believe that if it is a responsible air conditioner, it will not answer you exactly how much , But will ask you some specific circumstances of the environment, and then calculate the cooling effect according to how much cooling capacity (number of air conditioners) you use, and the number of units, etc. to calculate the cooling effect. Even if the sky is up, they will only tell you a temperature range. The air temperature in each corner is how much can be cooled, because there is a reality that the closer to the air conditioner air outlet, the ambient air temperature will be lower, and the position farther away from the air conditioner outlet is relatively cooler. The air temperature It will also be higher. I do n’t believe you can measure the room with air conditioner to see if it ’s true.

Seeing this, you naturally understand that it is effective to install and use a fan to cool the plant, but if you want a good cooling effect, it is recommended to follow the advice of the person who ventilates and cools the body, install a sufficient number and match the amount of air, And the installation location must be correct. Never install a cooling device to solve the cooling problem. The area is different, the cause of high temperature and sultry heat is different, the distribution of personnel, the building structure is different, and our cooling effect requirements are different. The quantity and air volume match are also different, I often tell users that if you expect to install a 1A small air conditioner to solve1000The workshop plant in the square meter cools down to a level where people feel very cool and comfortable. I believe that the air-conditioning plant can't do it. It's not the quality problem of cooling and cooling of the air conditioner itself, but the mismatch between the type of air conditioner and the cooling capacity you choose.