Die Durchführung von Adsorptions-Filtertests gemäß DIN EN ISO 10121 - Teil 1: Adsorptionsversuche an Filtermedien

摘要

The adsorptive purification of the gas phase is currently gaining more and more importance in the field of heating, ventilation and air conditioning (HVAC). One of the reasons for this development is the fact that people spend a lot of time indoors. During this time they can be exposed to a variety of indoor specific gaseous pollutants, which can have a negative effect on health and well-being. To counter this problem, adsorptive HVAC filters can be integrated into general ventilation systems. Two parts of the DIN EN ISO 10121 standard came into force in 2013 and 2015 to enable standard validation of the adsorptive filters and the corresponding filter media. The test procedures described in the relatively new standard with the necessary test benches confront manufacturers of filters and filter media with a new challenge. In a research project, the normative test methods of DIN EN ISO 10121 were validated with various test gases. The practical implementation and the results of the media tests with the test gases n-butane, toluene, SO2, O-3 and NO2 are presented and discussed in this article. In addition, a comparison of the adsorption performance from normative tests (at 9 or 90 ppm) with the adsorption behaviour at indoor concentrations (0.9 and 0.09 ppm) is presented.