ǂAn ǂexperimental apparatus for bench-scale fire testing using electrical heating pads

Aleksandra Seweryn (Avtor), Andrea Lucherini (Avtor), Jean-Marc Franssen (Avtor)

Povzetek

This research study concerns an experimental, budget-friendly, electricity- powered apparatus for bench-scale fire testing. The apparatus consists of various ele- ments, 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 heat- ing 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/m 2 . 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/m 2 . 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 condi- tions: 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 limita- tions of the apparatus, as well as many possibilities of future applications and improvement for future research studies.

Ključne besede

sevalni paneli;požarno testiranje;prenos toplote;toplotni tok;električne grelne blazinice;toplotni robni pogoji;radiant panels;fire testing;heat transfer;heat flux;electrical heating pads;thermal boundary conditions;

Podatki

Jezik:	Angleški jezik
Leto izida:	2023
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	ZAG - Zavod za gradbeništvo Slovenije
Založnik:	Kluwer
UDK:	621.3
COBISS:	177566723
ISSN:	1572-8099
Št. ogledov:	602
Št. prenosov:	897
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	sevalni paneli;požarno testiranje;prenos toplote;toplotni tok;električne grelne blazinice;toplotni robni pogoji;
Komentar vira:	Opis vira z dne 14. 12. 2023; Nasl. z nasl. zaslona;
Strani:	str. 2427-2460
Zvezek:	ǂVol. ǂ60
Čas izdaje:	2024
DOI:	10.1007/s10694-023-01514-4
ID:	23435058