The corner fire characteristics with two inert walls are compared against those with one or two combustible corner walls through a set of standard Single Burning Item (SBI) tests. The study examines how the corner fire behavior is affected by flame spread over one or two walls. In the case of flame spread over one corner wall, the inert side is a Calcium Silicate (CS) panel. As for the combustible wall, two different materials have been tested, namely, plywood and Medium-Density Fiberboard (MDF) panels. The results indicate that the simultaneous burning of two panels in the corner geometry increases the Heat Release Rate (HRR) contribution of each panel by 45–50%. This is because the burning of one corner wall increases the temperatures on the adjacent wall significantly, occasionally by more than 200 °C, and increases the heat fluxes on both corner walls at the same time, sometimes by nearly 20%. The results of HRR, Smoke Production Rate (SPR), flame heights, pyrolysis front propagation, panel temperatures, and total heat fluxes at several characteristic locations are presented.

通过一组标准的单项燃烧项目（SBI）测试，将具有两个惰性壁的角防火特性与具有一个或两个可燃角壁的角防火特性进行了比较。这项研究研究了在一两个墙上散布的火焰如何影响转角火灾行为。在火焰蔓延到一个角墙的情况下，惰性面是硅酸钙（CS）面板。至于可燃墙，已经测试了两种不同的材料，即胶合板和中密度纤维板（MDF）板。结果表明，在角部几何形状中同时燃烧两个面板会使每个面板的热释放率（HRR）贡献增加45–50％。这是因为燃烧一个角墙会显着提高相邻壁的温度，有时会升高200°C以上，并同时增加两个角墙的热通量，有时增加近20％。给出了HRR，烟雾生成率（SPR），火焰高度，热解前沿传播，面板温度和总热通量在几个特征位置的结果。