<Li> Rolling mills, including tinplate works and slitting mills . </Li> <P> An industrial furnace or direct fired heater, is an equipment used to provide heat for a process or can serve as reactor which provides heats of reaction . Furnace designs vary as to its function, heating duty, type of fuel and method of introducing combustion air . However, most process furnaces have some common features . </P> <P> Fuel flows into the burner and is burnt with air provided from an air blower . There can be more than one burner in a particular furnace which can be arranged in cells which heat a particular set of tubes . Burners can also be floor mounted, wall mounted or roof mounted depending on design . The flames heat up the tubes, which in turn heat the fluid inside in the first part of the furnace known as the radiant section or firebox . In this chamber where combustion takes place, the heat is transferred mainly by radiation to tubes around the fire in the chamber . </P>

Where does combustion take place in a furnace