In this graduation thesis I studied polyester nonwoven textiles which are being produced by Filc d.d. In the first part of the thesis I measured thermal conductivity properties of different voluminous nonwoven textiles with a heat flow meter. Based on the measurements I determined a connection between density, composition and thermal conductivity of the materials. The measurements showed that the tested nonwoven textiles have comparable thermal conductivity properties with nonwoven textiles which are already available on the market. In addition I determined the approximate density and composition of nonwoven textiles which lead to good thermal conductivity values. In the second part of the graduation thesis I studied a structural composite consisting of a nonwoven textile and thin metal. The purpose of the nonwoven textile is to hold condensed water. Based on the Glaser method and customized Glaser method I determined the allowed average temperature difference between the outer and inner side of the structural composite so that the absorption capacity of the nonwoven textile is not exceeded. For the outer side of the structural composite I used temperature data for Ljubljana. In the thesis I showed that the allowed temperature differences are lower in the winter period compared with the rest of the year. The allowed temperature differences in the rest of the year are higher and comparable with each other.
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