摘要:

AbstractVarious polymeric materials were combusted in a small‐scale box model equipped with an air supply system to determine the evolution of toxic gases and evaluate the toxicity of the environment containing these gases. There were cases where concentrations of HCN, acrolein and formaldehyde were higher in terms of potential toxicity than that of CO. Overall experimental results indicate that small‐scale experiments are useful in evaluating combustion toxicity of materi

ISSN:0308-0501    

DOI:10.1002/fam.810120202

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY

摘要:

AbstractThis paper presents a one‐dimensional mathematical model of enclosure fire dynamics. The model is based on the fundamental equations of mass, momentum and energy and uses the top hat velocity and temperature profiles for the movement of plume gases. A computational algorithm is also developed to solve the set of transient model partial differential equations. In addition, the explicit equations have been derived for computing the steady state velocity and temperature profiles. These derivations are based on the assumption that the plume width follows the relationship given by Eqn (12). Further, these relationships help to identify a dimensionless parameter,Frs, known as source Froude number, which has a significant effect on the behaviour of the plume gases. It may be noted that this assumption is only applicable for the case ofFrs= 1. The plume behaviour is studied with reference to three cases of source Froude numbers, i.e.Frs

ISSN:0308-0501    

DOI:10.1002/fam.810120203

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY

摘要:

AbstractA heat conduction equation with linerized radiation cooling boundary conditions is used to calculate the thermal field in a long‐strip window pane heated by thermal radiation (fire), except on narrow strips along edges built into the frame. This temperature field is used to calculate a quasi‐static thermal stress field in the pane in the first‐order planar stress approximation. Derived analytic equations of stresses are presented graphically. Thermal stresses build up at the edges in a narrow strip of a few times the pane thickness. In cool spots of the order of 100 K lower than the average temperature, stress build‐up can cause a microcrack to become a fast‐propagating

ISSN:0308-0501    

DOI:10.1002/fam.810120204

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY

摘要:

AbstractNineteen forest products in sawn board and panel form (including three fire retardant treated) have been tested to AS1530.3—Test For Early Fire Hazard Properties of Materials and ASTM E84—Standard Test Method for Surface Burning Characteristics of Building Materials. These tests are used in the building codes to regulate the flame spread properties of all combustible building materials in Australia and interior finsihes in North America, respectively. A correlation was established between Time to Ignition (AS1530.3) and Flame Spread Index (ASTM E84) for the forest products that had not been fire retardant treated. Room fire testing of eight of the forest products validaded Time to Ignition (AS1530.3) and Flame Spread Index (ASTM E84) as reliable test criteria for regulating the use of combustible materi

ISSN:0308-0501    

DOI:10.1002/fam.810120205

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY

ISSN:0308-0501    

DOI:10.1002/fam.810120206

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY

ISSN:0308-0501    

DOI:10.1002/fam.810120201

出版商:John Wiley&Sons Ltd.    

年代:1988

数据来源: WILEY