Filter for cleanroom recirculation systems

Air recirculation in cleanrooms is a topic of much controversy. Often the market offers solutions that seem simple, but the real needs are much more complex. We have been dealing with filtration issues for a long time, and over the years we have accumulated some experience. In this article I will try to share my thoughts and observations regarding the selection and applicationfilters for cleanroom recirculation systems. Talking about the 'best' filters is not entirely correct, because the choice always depends on the specific task and conditions.

Main problems when choosing filters

Let's start with what many customers face. Often the problem is not the filter itself, but a misunderstanding of air cleanliness requirements and incorrect configuration of the entire system. For example, people often think that it is enough to simply install a filter with a certain filtration class. But it is necessary to take into account not only the size of the particles, but also their concentration, as well as the specifics of the contaminants. In many cases, even very small particles present in small concentrations in the air can pose a hazard.

Another problem is incorrect calculation of air exchange. Insufficient air exchange leads to the accumulation of pollutants, and excessive air exchange leads to unnecessary energy expenditure. This creates a number of problems, including increased noise levels, increased load on ventilation equipment and, of course, increased energy costs.

We have repeatedly encountered a situation where customers chose filters only based on their price, ignoring other important parameters. As a result, they had to constantly replace the filters due to their rapid contamination, and the indoor air quality remained unsatisfactory. And this does not even take into account the cost of maintaining the ventilation system.

Types of filters and their features

When it comes to the filters themselves, there are many different types, from simple mechanical filters to complex high-efficiency activated carbon and silver filters. The choice of filter type depends on the nature of the pollutants. For example, activated carbon filters are required to remove odors and gases. Moreover, not any coal will do. Its particle size, porosity and the presence of additives, for example, silver, which has antibacterial properties, are important.

We work with filters from various manufacturers, and each of them has its own characteristics. For example, filters with a cycloidal structure are highly efficient and durable. Other filters, such as those with a concave structure, are more economical and suitable for systems with low air exchange. We recommend that you carefully study the technical characteristics of filters and choose those that meet the requirements of your premises.

Don't forget about pre-filtration. The use of pre-filters, such as coarse filters, can significantly extend the service life of more expensive high-efficiency filters. This, in turn, reduces system maintenance costs.

Practical experience and cases

In one of our projects (for example, for a laboratory), we were faced with the problem of the accumulation of specific chemicals formed during experiments. Simple mechanical filters have proven ineffective. We ended up using a combination of different types of filters: a coarse pre-filter, a carbon filter to remove odors and gases, and a HEPA filter to capture small particles. This comprehensive approach allowed us to achieve the required level of air cleanliness and avoid problems with odors and eye irritation for employees.

In another case (for a production facility), we were faced with the problem of accumulation of dust and dirt generated during the operation of the equipment. We used filters with a cycloidal structure, which ensured high efficiency and durability. Regular replacement of filters and timely maintenance of the system allowed us to maintain a high level of air cleanliness and avoid equipment breakdowns.

Correcting design errors is much more difficult. Often, choosingfilters for cleanroom recirculation systemsfor an existing system, you have to resort to major changes in its configuration, which entails additional costs and time. Therefore, system planning should be as thorough as possible, and include calculation of not only the required degree of purification, but also the required air exchange.

Service and quality control

Regular maintenance and quality control of filters is the key to their effective operation. It is necessary to regularly check the degree of contamination of filters and replace them promptly. It is also important to monitor indoor air parameters, such as the concentration of dust, gases and other pollutants. This allows problems to be identified in a timely manner and corrective measures taken.

There are various methods for monitoring air quality, from simple visual inspections to complex laboratory tests. The choice of inspection method depends on the required accuracy and available resources. We recommend regular laboratory tests to monitor contaminant concentrations and evaluate filter performance.

Unfortunately, not enough attention is often paid to the correct installation and configuration of the system. An incorrectly installed filter will not be able to effectively purify the air, and an incorrectly configured ventilation system can lead to increased energy consumption and deterioration of air quality.

Conclusion

Choicefilters for cleanroom recirculation systems– a task that requires an integrated approach and consideration of many factors. You should not skimp on the quality of filters and system maintenance. It is better to contact specialists who will help you choose the optimal solution and configure the system correctly. This will allow you to achieve the required level of air purity and avoid problems in the future.

Tianjin Tongchang Junqi Cleaning Equipment Co., Ltd. has been successfully developing, producing and supplying filter products for various industries for more than [number] years. We are constantly improving our technologies and offering our clients the most modern and effective solutions.

More detailed information about our products and services can be found on our website:https://www.tcfilter-group.ru.

Additional Resources

We recommend that you familiarize yourself with the national standard GB/T-13554GB/T-13554'High Efficiency Air Filters' for more information on the requirements for high efficiency air filters.