Abstract
This paper describes the effects of the vertical flue space (gap) on the convective Heat Release Rate (HRR) and the in-rack plume flow in rack storage fires. Four large-scale tests with Standard Class II commodity, which consists of double triwall corrugated board cartons, were carried out with vertical flue spaces of 75 mm, 150 mm, 225 mm and 300 mm. Measurements of convective HRR per height of the rack storage, in-rack flame height, centreline excess gas temperature, centreline gas velocity and in-rack temperature profiles are presented. The objective of the study was to compare the results of the four full-scale rack storage tests to the results of the 1:3 model-scale tests and one large-scale test carried out in an earlier study
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