TY - JOUR A1 - Ferrero, Fabio A1 - Kluge, Martin A1 - Schmidtchen, Ulrich A1 - Holtappels, Kai T1 - Modeling the heat transfer in acetylene cylinders during and after the exposure to fire JF - Journal of loss prevention in the process industries N2 - In this paper two different approaches for predicting the heating-up of an acetylene cylinder involved in a fire and the afterward cooling with water are presented. In the simulations polynomial functions were used to describe the temperature dependency of the thermal properties of the cylinder interior, which is a complex system composed by a solid porous material, a solvent (typically acetone) and acetylene dissolved in it. Model equations covered heat conduction in the cylinder interior and at its walls. In the first approach the cylinder surroundings were simulated as a further domain constituted by CO2, during the fire exposure, and for water, during the cooling. In this domain the coupled heat transfer (convection and conduction) and the momentum equation (Navier-Stokes) were solved. In the second approach no further domain was considered but boundary conditions were set directly on the cylinder walls. Results of the calculations performed with both approaches are presented. This work could prove helpful in predicting to which extent the interior of an acetylene cylinder exposed to fire reaches temperatures capable of initiating the decomposition of acetylene and to determine how long a water cooling should be applied, so that the system is brought again under non-critical conditions. KW - Safety KW - Acetylene KW - Heat transfer KW - Fire KW - Water cooling PY - 2010 DO - https://doi.org/10.1016/j.jlp.2010.06.012 SN - 0950-4230 SN - 1873-3352 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. VL - 23 SP - 654 EP - 661 PB - Butterworth CY - Guildford, Surrey AN - OPUS4-21808 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -