DIN EN ISO 15957:2015-08

This standard contains the German version of EN ISO 15957:2015 prepared by Technical Committee ISO/TC 142 "Cleaning equipment for air and other gases" in collaboration with Technical Committee CEN/TC 195 "Air filters for general air cleaning" of the European Committee for Standardization (CEN). The national interests during the preparation were represented by NA 060-09-21 AA "SpA CEN/TC 195 und ISO/TC 142" ("Mirror Committee for CEN/TC 195 and ISO/TC 142") in the Technical Section "General Ventilation" of the Mechanical Engineering Standards Committee (NAM) at DIN. Representatives of manufacturers and users of air filters as well as research and testing institutes were involved in the preparation of the standard. This standard defines the properties of load test dusts used for heating, ventilation, and air conditioning (HVAC) air filters as well as air cleaning equipment in laboratories. Test dusts used for evaluation of efficiency performance are not included. Filters are subjected to evaluation of their initial performance and dust-loaded performance in laboratory tests using specified test dusts. The results are to reflect the performance of the filter as installed in a building. However, since the properties of atmospheric aerosols vary to a large extent regionally, seasonally, and according to weather conditions, test data obtained with a given test dust seldom accurately predict the filter performance as actually used. In addition to this, the test results with a given test dust might not be in agreement with those obtained by other laboratories because the filter performance is affected by many factors such as particle size distribution, particle agglomeration, and electrical charge. Despite these problems in testing filter performance, the test data are used for the classification of filters, estimation of energy consumption, Life Cycle Cost (LCC), and Life Cycle Assessment (LCA). The test dust used for evaluating initial performance and loaded performance of filters can have a different specification from the dust used to achieve filter loading. This standard does not control the specification, manufacturing, or use of test dusts. It describes the properties of test dusts which can be used to load filters, and the requirements for test dust generation that will ensure that useful laboratory test results are obtained in order to mimic the actual use as much as possible.