Heat transfer mechanisms and models for a gypsum board exposed to fire

This book is organized under the following topics: computers for modeling, Thermophysical properties, Critical behavior of water and aqueous solutions, Two-phase flow phenomena in power cycles, Metastable states and nucleation, Industrial calculations, states and nucleation, industrial calculations, Chemical and phase equilibria, Solutions, power cycle chemistry, Corrosion in power plants.

Properties of water and steam

Development of a solid reaction kinetics gypsum dehydration model appropriate for CFD simulation of gypsum plasterboard wall assemblies exposed to fire

Thermal analysis of calcium sulfate dihydrate sources used to manufacture gypsum wallboard

Here a comprehensive survey of the literature in the area of numerical heat transfer (NHT) published in 2010 and 2011 has been conducted. Due to the immenseness of the literature volume, journals s...

Literature Survey of Numerical Heat Transfer (2010-2011)

This article investigates the contribution of water vapor convection to heat transfer through gypsum plasterboard exposed to fire. The vapor is generated as a product of the endothermic dehydration reaction in gypsum, and it is then expelled from the material through the pore network by its own pressure, thereby taking part in the heat transfer from the fire-exposed to the cold surface of plasterboard. The gas permeability values of plasterboard core and paper liner are obtained experimentally. The results of simulations are validated against the temperature measurement data obtained for two types of commercial plasterboard tested in the standard fire ISO 834. It is shown that vapor convection plays an essential role in heat transfer through plasterboard during the initial stage of fire. The amount of condensate developing in the pores of the material is found to be low, which allows it to be neglected in engineering calculations.

S. V. Shepel

Papers

Vapor Convection in Gypsum Plasterboard Exposed to Fire: Numerical Simulation and Validation