Correlation between cone calorimeter data and time to flashover in the room fire test

Ett enkelt empiriskt samband har utvecklats för att beräkna tiden till övertändning i ett rum klätt med olika vägg- och takmaterial vid fullskalig rumsbrandprovning. Det baseras på provning av 28 olika ytmaterial. Bland dessa fanns både träbaserade och oorganiska material med och utan ytskikt samt syntetiska material. The correlations are based on linear regressions between data as time to ignition and total heat release in the cone calorimeter and time to flashover in the room fire test. They are further development of an earlier approach which has been modified and extended to a wider range of surface linings. The correlations apply so far only to surface linings on both walls and ceilings. When the density of the linings is included, the correlations are improved significally.