A numerical and experimental investigation of temperature field in place of anchors in ETICS system

The aim of the paper is to determine the thermal quality of recycling connectors and to assess their application effectiveness in thermal insulation systems. Four types of connectors were used, differing in the share of the added recyclate, and two different ways of their mounting were presented. The connectors used in the work were produced on the basis of polypropylene recyclate. The initial tests determined their strength and other features required for mount connectors in the ETICS systems. The article presents the results of infrared measurements for envelopes insulated with the material of different thicknesses and mounted with the use of recycling connectors. In the numerical tests (THERM program), envelope models with a thermal connector were made for the selected variants of the connector and its mounting, treating it as a point bridge. Temperature distribution profiles were determined at the places of point thermal bridges, the thermal coupling coefficient and the value of the point thermal bridge were calculated. Throughout this work, the term ‘recyclate connector’ is understood by the authors as a sleeve made from recyclate and a pressure plate.