Fire Chemistry. Objectives Energy release rates in solids, liquids, and gases. Answer basic...
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Transcript of Fire Chemistry. Objectives Energy release rates in solids, liquids, and gases. Answer basic...
Fire Chemistry
Objectives
Energy release rates in solids, liquids, and gases.
Answer basic questions as it relates to the chemical composition of materials.
The effects of states of matter on how fuels burn.
States of Matter and Energy Release Rates What are the three states of matter?
SolidLiquidsGases
What are some examples of each
Does the state of matter determine release rate? Does the state of matter affect energy
release rate?
What will burn faster? A solid, liquid, or gas?
Are there any exceptions? (Finely divided fuels).
Terminology
Let’s discuss the following terms and how they affect burning.Flash PointFire PointVapor PressureVapor DensityAuto ignition temperatureFlammable/Explosive range (LEL-UEL)
Endothermic and Exothermic Reactions What is the definition of endothermic?
What is the definition of exothermic?
What is a BLEVE?
○ Boiling○ Liquid○ Expanding○ Vapor○ Explosion
○ Watch these: http://video.google.com/videosearch?
sourceid=navclient&rlz=1T4DGUS_enUS312US312&q=BLEVE&um=1&ie=UTF-8&ei=D39DSrCUDJiNtgfr8sGcAQ&sa=X&oi=video_result_group&ct=title&resnum=930865281#
http://video.google.com/videosearch?sourceid=navclient&rlz=1T4DGUS_enUS312US312&q=BLEVE&um=1&ie=UTF-8&ei=D39DSrCUDJiNtgfr8sGcAQ&sa=X&oi=video_result_group&ct=title&resnum=930865281#