20.500.12556/DiRROS-18676 An experimental apparatus for bench-scale fire testing using electrical heating pads This research study concerns an experimental, budget-friendly, electricity- powered apparatus for bench-scale fire testing. The apparatus consists of various elements, of which the most important are ceramic heating pads, used to impose heat fluxes on exposed surfaces of specimens. The test method allows to control the heating pads’ temperature and to adjust the distance between the heating pads and the specimen to obtain well-defined heat fluxes up to 50–60 kW/m2. Higher heat fluxes and temperatures can be obtained by setting the heating pads in full power mode, with or without the use of a thermal shield, which can lead to heat fluxes up to 150 kW/m2. The heating and thermal boundary conditions imposed by the apparatus are characterised and discussed, and the thickness of the convective boundary layer at the heating pads’ surface is estimated significantly lower than in the case of gas- fired radiant panels. The performance of the apparatus is analysed for various conditions: controlling the temperature of the heating pads, in an open environment or with the presence of thermal shields, and in full power mode. A few examples of application of the apparatus to fire test typical construction materials (steel and glass) are also presented. These results emphasise the well-defined heating conditions in temperature-controlled mode. The study finally discusses the advantages and limitations of the apparatus, as well as many possibilities of future applications and improvement for future research studies. radiant panels fire testing heat transfer heat flux electrical heating pads thermal boundary conditions sevalni paneli požarno testiranje prenos toplote toplotni tok električne grelne blazinice toplotni robni pogoji true false true Kluwer Angleški jezik Slovenski jezik © 2023 The Author(s) Neznano 2024-04-15 10:37:48 2024-04-15 10:48:28 2025-01-14 08:25:13 0000-00-00 00:00:00 2024 0 0 Opis vira z dne 14. 12. 2023; Nasl. z nasl. zaslona; str. 2427-2460 Vol. 60 Dec. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-12-13 621.3 1572-8099 10.1007/s10694-023-01514-4 177566723 https://link.springer.com/article/10.1007/s10694-023-01514-4 1 adb7d9e0-faf2-11ee-ae20-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25514 RAZ_Seweryn_Aleksandra_2023.pdf RAZ_Seweryn_Aleksandra_2023.pdf 1 4368ABAFFE7D3F3C91BB8DF7E967B514 7293363d1293bbdc2dab635e505f4569b25350cb6c9bdb90f84a007b57937e0e 8134af76-59f5-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=28277 Zavod za gradbeništvo Slovenije 0 0 0