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Standards Development
This standard specifies test methods for measuring change in performance over time of household and similar electrical air cleaners intended for the reduction of particulate pollutants.
In the light of the growing awareness for air pollution, indoor air cleaners are meanwhile widely used to improve the indoor air quality. In the sense of the global harmonization of standards, TC 59/JWG 17 is working on developing a new IEC standard for testing the performance of household and similar air cleaning appliances. The corresponding Standard 63086 Part 1, which describes the general requirements for testing, was recently published in 2020. As a next step, test methods for the reductions of particulate pollutants are being developed in Part 2-1 standard. The test method for measuring change in performance over time of indoor air cleaners needs to be developed as well. Especially, the following aspects shall be considered:
1. Unfortunately, many indoor air cleaners decrease in performance with time of use. This is based on changes in filter performance, loading of filters, poor maintenance, reactions with filter materials and reduction in air volume over time. Many consumers want to know the life of the air cleaning system employed in the air cleaner to effectively change the filter they use or perform necessary maintenance. Therefore, it is necessary to set up a test method standard for measuring the reduction of performance over time of the air cleaner and thus to give a guide for changing of the filter system.
2. Although air cleaners may reach a high initial performance, it has been observed that the efficiency can degrade with time due to exposure to large amounts of particulate matter, organic particles, gases or exposure to such environmental conditions as air humidity. Thus, it is important to develop a method to reproducibly age the appliances in order to evaluate the long-term stability. Also, it is necessary to conform some of the test methods for electrical discharging of filters based on ISO standard 16890-4. The method shall be applicable for a large variety of different cleaning technologies and provide a compromise between closeness to reality and time efficiency.
3. Some countries have standards for air cleaner’s filter life. Some test methods utilize large amounts of test materials and can take considerable time to obtain results. Therefore, it is also necessary to set up the test methods using particles that are not harmful to the human body and to reduce the test time as well.
4. Accordingly, there is an urgent need for a reasonable set of scientific test methods to evaluate the performance over time of indoor air cleaning appliances.
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