Clean air is one of the essential items for everyone's survival. The prototype of the air filter is a respiratory protective device used to protect people's breathing. It captures and adsorbs different particles in the air, thereby improving indoor air quality. Especially now that the new coronavirus is raging around the world, many identified health risks are related to air pollution. According to the EPHA report, the chance of contracting the new coronavirus in polluted cities is as high as 84%, and 90% of human work and entertainment time is spent indoors. How to effectively improve indoor air quality, choosing an appropriate air filtration solution is a key part of it.
The choice of air filtration depends on many factors, such as outdoor air quality, chemicals used, production and living environment, indoor cleaning frequency, plants, etc. We cannot improve outdoor air quality, but we can filter the gases circulating indoors and outdoors to ensure that the indoor air quality reaches the standard, it is necessary to install an air filter.
Technologies for removing particulate matter in the air mainly include mechanical filtration, adsorption, electrostatic dust removal, negative ion and plasma methods, and electrostatic filtration. When configuring a purification system, it is necessary to select appropriate filtration efficiency and a reasonable combination of air filters. Before choosing, there are several issues that need to be understood in advance:
1. Correctly measure the dust content and dust particle characteristics of outdoor air: Indoor air is filtered from outdoor air and then sent indoors. This is related to the material of the filter, the selection of filtration levels, etc., especially in multi-stage purification. During the filtration process, selecting a pre-filter requires comprehensive consideration of outdoor environment, usage environment, operating energy consumption and other factors;
2. Purification standards for indoor purification: Cleanliness levels can be divided into class 100000-1000000 based on the number of particles per cubic meter of air whose diameter is greater than the classification standard. The air filter is located at the end air supply. According to different grade standards, when designing and selecting filters, it is necessary to determine the air filtration efficiency of the final stage. The last stage of filter determines the degree of air purification, and the combination stage of the air filter should be reasonably selected. Count the efficiency of each level and select it from low to high to protect the upper-level filter and extend its service life. For example, if general indoor purification is required, a primary filter can be used. If the filtration level is higher, a combined filter can be used, and the efficiency of each level of filter can be reasonably configured;
3. Select the correct filter: According to the use environment and efficiency requirements, select the appropriate filter size, resistance, dust holding capacity, filtration air velocity, processing air volume, etc., and try to choose high-efficiency, low-resistance, large dust-holding capacity, moderate wind speed, and processing The filter has a large air volume and is easy to install.
Parameters that must be confirmed when selecting:
1) Size. If it is a bag filter, you need to confirm the number of bags and bag depth;
2) Efficiency;
3) Initial resistance, the resistance parameter required by the customer, if there are no special requirements, select it according to 100-120Pa;
4. If the indoor environment is in an environment with high temperature, high humidity, acid and alkali, you need to use corresponding high temperature resistant and high humidity resistant filters. This type of filter needs to use corresponding high temperature resistant, high humidity resistant filter paper and partition board. As well as frame materials, sealants, etc., to meet the special needs of the environment.
Post time: Sep-25-2023