Influence of Combustible Dimension and Density on Heat Release Rate Part 2 Relation between Combustible Dimension, Maximum Heat Release Rate and Duration of Maximum Burning

It is important to understand the burning behavior of the familiar flammable materials used in the various aspects of the fire safety design of a building, such as evacuation safety. The time history of the heat release rate can be regarded as an indicator of the spreading speed of the fire. In the past, the heat release rate of various flammables has been measured,[1] but it has not yet been confirmed how time history of the heat release rate changes with respect to the material and the dimension standard. Therefore, a burning experiment was conducted by using polyurethane mattresses with different dimensions and densities, and this report demonstrates the findings regarding the relation between the time history on one hand and the maximum heat release rate, the maximum scale burning and the dimension and density of the test object on the other.