Heat Transfer 07
Heat Transfer 07 : The process by which heat is imparted from one body or object to another. In forest fires, heat energy is transmitted from burning to unburned fuels by: Convection: Transfer of heat by the movement of masses of hot air; the natural direction is upwards in the absence of any appreciable wind speed and/or slope. Radiation: Transfer of heat in straight lines from warm surfaces to cooler surroundings. Conduction: Transfer of heat through solid matter. Note: In forest fires , the transmission of heat may also take place by solid mass or ember transport. This is the transfer of heat resulting from firebrands being transported ahead of a fire by the wind, by gravity (e.g. rolling downhill), or being carried aloft in the convection column or by a fire whirl (i.e. spotting).
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