Fire tests with automatic sprinklers in an intermediate scale tunnel
2022 (Engelska)Ingår i: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 129, artikel-id 103567Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
A series of 1:3 intermediate scale tunnel fire tests was performed to investigate the performance of a fully automatic sprinkler system in a road tunnel. The experiments were carried in a container tunnel with scaled geometry, using wood pallets as the fire source to simulate HGV fires. The activation of the sprinklers was simulated by using thermocouples that corresponded to a given Thermal Response Index (RTI) of a sprinkler bulb or a link. A total of 12 tests were carried out with varying longitudinal velocities (0.8–1.7 m/s), sprinkler activation temperatures (68–141 °C), water densities (2.9–8.7 mm/min) and types of arrangement of the fuel. The activation times, number of activated sprinklers, maximum heat release rates and other key parameters are presented and analyzed. The results show that the water density plays a key role in the performance of the automatic sprinkler systems tested. A high tunnel ventilation velocity, low water density and low sprinkler activation temperature are not recommended. © 2022 The Authors
Ort, förlag, år, upplaga, sidor
Elsevier Ltd , 2022. Vol. 129, artikel-id 103567
Nyckelord [en]
Activation, Automatic sprinkler, Model scale, Tunnel fire, Tunnel velocity, Chemical activation, Fires, Flammability testing, Sprinkler systems (irrigation), Thermocouples, Activation temperatures, Fire tests, Performance, Road tunnel, Sprinkler activation, Tunnel fires, Water density, Hose
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Maskinteknik
Identifikatorer
URN: urn:nbn:se:ri:diva-58999DOI: 10.1016/j.firesaf.2022.103567Scopus ID: 2-s2.0-85127092273OAI: oai:DiVA.org:ri-58999DiVA, id: diva2:1668290
Anmärkning
Funding details: Svensk Kärnbränslehantering, SKB; Funding details: Trafikverket; Funding text 1: The research was sponsored by the Tunnel and Underground Safety Center (TUSC) with additional funding from the Swedish Transport Administration (STA). The financiers of TUSC are the Swedish Transport Administration (STA), the Swedish Fortifications Agency, the Swedish Nuclear Fuel and Waste Management Company (SKB), and RISE Research Institutes of Sweden. Thanks to Ulf Lundstr?m at STA who contributed extensively to the discussion and preparation for this work and the technical staff at RISE who made it possible to perform the tests.; Funding text 2: The research was sponsored by the Tunnel and Underground Safety Center (TUSC) with additional funding from the Swedish Transport Administration (STA) . The financiers of TUSC are the Swedish Transport Administration (STA), the Swedish Fortifications Agency, the Swedish Nuclear Fuel and Waste Management Company (SKB), and RISE Research Institutes of Sweden. Thanks to Ulf Lundström at STA who contributed extensively to the discussion and preparation for this work and the technical staff at RISE who made it possible to perform the tests.
2022-06-132022-06-132025-09-23Bibliografiskt granskad