Estimating room temperatures from fires along walls and in corners

Fire performance of wire and cable reaction-to-fire tests :

“…Later, some of these implications were also examined by Babrauskas [248]. There are still no general, quantitative recommendations; however, the recent study of Mowrer and Williamson [249] can offer some guidance. They conclude that "a fire in a corner is equivalent with respect to [room temperature rise] to a fire about twice as large in the center of the room.…”

An Interrogation Of The MQH Correlation Ot Describe Centre And Near Corner Pool Fires

“…This approach was suggested by the results of plume theory [1,3,4]. Here, the properties in the far field region above the flame can be described by the classical theory of point source buoyant plumes [8] as in the far field region, the difference between the distributed turbulent diffusion flame source and a point source becomes negligible.…”

“…In the case of simple geometries and excluding very small compartments, it has been shown that a good estimate of compartment fire hazard with reference to the possibility of room flashover is made with the MQH correlation 1,2] compared to more complex models such as CFAST. This has been given additional utility implied by the generality of the MQH correlation as suggested by Mowrer and Williamson (heretofore referred to as MW [3]) who have ostensibly extended the correlation to fires at room corners and sidewalls by an extension of plume theory. Their deductions were however tested with a limited number of experiments in a Gypsum Plasterboard (PLA) lined room with a controlled propane gas ignition source (0.3m square and of 0.3m height) having a limiting heat output of 160 kW [3].…”

“…This has been given additional utility implied by the generality of the MQH correlation as suggested by Mowrer and Williamson (heretofore referred to as MW [3]) who have ostensibly extended the correlation to fires at room corners and sidewalls by an extension of plume theory. Their deductions were however tested with a limited number of experiments in a Gypsum Plasterboard (PLA) lined room with a controlled propane gas ignition source (0.3m square and of 0.3m height) having a limiting heat output of 160 kW [3]. Furthermore, the results of studies conducted elsewhere in corner and sidewall geometries have been interpreted in [4] to imply much greater differences in the entrainment of air into the corner and sidewall geometries than suggested in [3].…”

“…Their deductions were however tested with a limited number of experiments in a Gypsum Plasterboard (PLA) lined room with a controlled propane gas ignition source (0.3m square and of 0.3m height) having a limiting heat output of 160 kW [3]. Furthermore, the results of studies conducted elsewhere in corner and sidewall geometries have been interpreted in [4] to imply much greater differences in the entrainment of air into the corner and sidewall geometries than suggested in [3]. Recent analysis of studies conducted at FireSERT in well instrumented full scale (modified ISO scale room) and third scale enclosures [5,6,7] provided an opportunity to study the validity and generality of the MQH correlation and the associated MW modifications.…”