High-efficiency filters are often used in environments with high requirements for air cleanliness. Different production workshops have certain standard requirements for the air volume after filtration. So how to calculate the air volume of high-efficiency filters? How to calculate the air volume of filters?
The air volume of high-efficiency air filters is generally determined according to the wind speed and size of high-efficiency air filters. Generally, the rated wind speed of high-efficiency air filters is between 0.3 and 0.6 m/s, and the middle value of 0.45 can be taken; if the size of the high-efficiency air filter with a wind volume of 1000 is 484*484*220, the conversion will come out.
In fact, it can also be calculated in this way. Using the national standard 484*484*220 high-efficiency filter to calculate, the rated air volume is 1000m³/h, and the initial resistance is 200pa. The number of filter paper folds is 28/10cm, and the effective area of the filter paper is calculated as 0.475*0.475*0.280*0.2*2=25.27 square meters, of which 0.475 is the effective length of the filter paper, 0.475 is the effective width of the filter paper, 280 is the double layer of one meter of filter paper, and 0.2 is the actual height of the filter paper. The wind speed of the filter paper section: 1000/3600/25.27=0.011m/s, that is, when the wind speed of the filter paper section is 0.011m/s, the initial resistance of the filter paper is 200pa.
Below are the commonly used sizes of high-efficiency air filters and the corresponding air volume.
High efficiency air filter with partition
1. 610*610*150 air volume is 850～1000m³/h
2. 484*484*220 air volume is 1000m³/h
3. 305*610*292 air volume is 850～1000m³/h
High efficiency air filter without partition
1. 305*305*69 air volume is 250m³/h
2. 610*610*69 air volume is 850～1000m³/h
3. 1170*570*69 air volume is 1000～1500m³/h
The above is the calculation method of the air volume of the high efficiency air filter. The air volume of the filter determines the upper limit of the air supply volume, and the air volume after the high efficiency filter is filtered needs to meet the ventilation times of the room. If the air volume is too large, the filter is easy to break and cause leakage, and if the air volume is too small, it cannot meet the production needs. Therefore, the air volume of the filter is generally 20% higher than the rated air volume. The specific value needs to be determined based on the actual use of the filter. After a period of time, the resistance of the filter will gradually increase and the wind speed will decrease. Therefore, it is recommended that the use of high-efficiency air filters should be 10% to 20% higher than the rated air volume.
