The filters experts for analysis of the factors affecting the filtration

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First, the filtration efficiency of the device
The main factors affecting the filtration equipment efficiency generally include the airflow in particle diameter, the thickness of the filter structure and the speed of the airflow, temperature and humidity, and dust content, etc., to sum up the level of efficiency depends on the performance of the filter media, the nature of the air flow and air velocity.
According to the relevant studies, we can see that the structure of the air filter on the filtration efficiency is small, the major and related to the performance of the filter media, while the change in speed of the air flow can also seriously affect filtration efficiency. Therefore, the filtration efficiency of use of different types of filters, appears in the same amount of wind, there will be some differences, for example, in the rated air volume, reduce the filtration rate of the airflow, and the filtration efficiency is not reduced, it is proved that the filter does not occur leakage problem. For the same type of filter, the filtration efficiency will not change much when the amount of wind, the filtration area and the filter material are the same performance.mesh filter bag
Second, the filter device resistance
The device resistance analysis There are two main theories: one is the channel theory, another resistance theory, after certain research showed that the resistance factors of the air filtration equipment and the speed of the airflow, the filtering area, the structure of the apparatus, gas viscosity, the radius of the fiber, and filling density has a direct relationship. Theory we can draw from a large number of experimental data is that the experimental values and the theoretical values is the presence of certain errors, mainly because of the the theory established model and the actual use of the flow field is not completely consistent result. while the assumptions made in the test is an ideal situation, the actual use is not the case.
For the filtration apparatus of the same model, in the same rated air volume of structural resistance, the size of the total resistance is a lso not the same, this is different because the resistance of the filter is different and that its total resistance. The different structures of the air filter in the same amount of wind resistance is not equal, which indicates the resistance will also be the influence of the filter material.