منابع مشابه
Paleoecological Perspectives on Fire Ecology: Revisiting the Fire-Regime Concept
Fire is well recognized as a key Earth system process, but its causes and influences vary greatly across spatial and temporal scales. The controls of fire are often portrayed as a set of superimposed triangles, with processes ranging from oxygen to weather to climate, combustion to fuel to vegetation, and local to landscape to regional drivers over broadening spatial and lengthening temporal sc...
متن کاملEstimation of Heat Release in Fire Compartment
This paper presents the model to estimate heat release in fire compartment about four fuels, Douglas fir considering char formation and moisture content, methanol, methane and propane, with equivalence ratio Q on the basis of previous work and discusses about the difference of the combustion efficiency of them. As the result, calculated heat release of Douglas fir, methane and propane shows rel...
متن کاملExergy Analysis of a Compartment Fire
A thermodynamic model of a compartment fire with one state variable (corresponding to the dimensionless temperature of the smoke layer) based on energy conservation is studied from the point of view of the Second Law (exergy analysis). To define the exergy rate of the process, a novel concept of mean thermodynamic temperature is introduced for the smoke layer. This parameter is the equivalent o...
متن کاملThe role of thermal radiation on the initiation of flashover in a compartment fire
Importance of thermal radiation for transition to flashover in a compartment fire will be demonstrated. A one zone model is developed with the objective of capturing the key mechanisms responsible for the initiation of flashover, i.e. physics of flashover. Thermal radiation is shown to be a key point and the inclusion of a three-dimensional radiation model is essential in the development of an ...
متن کاملThe Effect of Thermal Radiation on the Dynamics of Flashover in a Compartment Fire
Flashover is a phenomenon describing a room fire changed from the growth stage to the development stage. There is a rapid increase in size and intensity. The radiant heat flux back to the fuel surface and the floor of the room is known to be one of the key parameters leading to flashover. Indeed, a heat flux (largely due to radiation) of 20 kW/m to the room floor is often taken to be the condit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Fire Safety Science
سال: 2014
ISSN: 1817-4299
DOI: 10.3801/iafss.fss.11-28