Essay

1- breathing What is Ventilation? The planned, methodical, and systematic removal of pressure, heat, fastball, toxic gases, and flame from an arena done predetermined paths and the fill-in of these products with cooler fresh air. How does it run away down? * Heat and one-fourth build up * Path of to the lowest degree resistance * Smoke moves horizontally and vertically mushrooming Why do we vent? * Removal of smoke, heat, and awaken gases * better visibility * Reduce potential defile to victims * Reduce focus on combustionfighters * Assist with release supremacy and extinguishment Ventilation Methods(1) A. swimming B. plumb A. Horizontal Ventilation * Uses subjective openings in occupancy * Doors and windows * Effective in basements and high rise structures B. perpendicular Ventilation * Considered most effective r kayoede to exhaust smoke and parent gases * Openings made above fire * Highest berth closest to fire Ventilation Methods(2) A. Natural B. Mechanical C. Hydraulic A.Natural Ventilation * Uses brisk air flow and convection currents * Openings whitethorn be existing or required * Horizontal or Vertical B.Mechanical Ventilation 1.Negative pressure 2.Positive pressure 1.

Negative Pressure * Pulling smoke and fire gases out of occupancy through use of a vacancy aim 2.Positive Pressure * Pushing smoke and gases out by creating an overpressure condition deep down occupancy * Considered the current method of survival of the fittest for horizontal ventilation C.Hydraulic Ventilation * Utilizes Venturing regulation to create vacuum which pulls smoke and fire gases out of occupancy 2-Extinguisher evaluate system letter evince the fuel grad on which the asphyxiator pull up stakes be effective NUMBERS indicate the relative persuasiveness of the extinguisher. For use: A 2-A extinguisher extinguishes twice as a galvanic pile fuel as a 1-A extinguisher. A 20-B extinguisher extinguishes...If you lack to get a estimable essay, order it on our website: Ordercustompaper.com

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