An Introduction to Fire Dynamics, Third Edition by Dougal Drysdale(auth.)

By Dougal Drysdale(auth.)

Content material:
Chapter 1 hearth technology and Combustion (pages 1–34):
Chapter 2 warmth move (pages 35–82):
Chapter three Limits of Flammability and Premixed Flames (pages 83–119):
Chapter four Diffusion Flames and hearth Plumes (pages 121–179):
Chapter five regular Burning of drinks and Solids (pages 181–223):
Chapter 6 Ignition: The Initiation of Flaming Combustion (pages 225–275):
Chapter 7 unfold of Flame (pages 277–315):
Chapter eight Spontaneous Ignition inside of Solids and Smouldering Combustion (pages 317–348):
Chapter nine The Pre?Flashover Compartment hearth (pages 349–386):
Chapter 10 The Post?Flashover Compartment hearth (pages 387–439):
Chapter eleven Smoke: Its Formation, Composition and move (pages 441–474):

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4 Schematic representation of a burning surface, showing the heat and mass transfer processes. 9). 1). It will be shown later that the rate at which energy is released in a fire (Q˙ c ) is the most important single factor that characterizes its behaviour (Babrauskas and Peacock, 1992). 13). 4) can still be of value when there is limited information available (see Chapter 5). 4) reveals that there are many contrib˙ c – including properties relating not only to utory factors which together determine Q the material itself (Lv and Hc ), but also to the combustion processes within the flame ˙ F and χ).

16). Fire Science and Combustion 31 (iii) At high temperature, the products are partially dissociated into a number of atomic, molecular and free radical species. R19c) As each dissociation is endothermic (absorbing energy rather than releasing it), these will depress the final temperature. The effect of dissociation on the calculated temperature becomes significant above ∼1700◦ C (2000 K). 7 Total thermal capacity/mole propane = Per mole of propane burnt. , Chase, 1998), provided that the final temperature is known.

4). 81 m/s2 ). 8 kPa (or 631 mm Hg). 2. For small values of y – for example, corresponding to the vertical dimension of a building – the difference in pressure between the ground and the upper floors will be very small. 12d) where h is the height of the building (m). 6 kPa, less than 1%). However, if the temperatures inside and outside the building differ by a few degrees, the resulting differences in air density will give rise to pressure differentials across the building 18 An Introduction to Fire Dynamics envelope.

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An Introduction to Fire Dynamics, Third Edition by Dougal Drysdale(auth.)
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