Holthuis and Associate’s “Flat-Flame Burner” is the “laboratory-standard” world wide for combustion studies. It has been known as the “McKenna flat flame burner” for the last quarter century.
The standard Holthuis and Associate’s Flat-Flame Burner is constructed of a stainless steel housing within a main-body. Pressed into the housing is a fluid cooled 6-cm-diameter burner plug made up of either a sintered stainless steel or bronze matrix. The housing unit is then screwed into the main-body and a flanged mounted sintered porous bronze shroud ring is fixed over the housing onto the main-body. The user’s fuel mixture (consisting of pre-mixed oxidizer and fuel) is introduced through a º” compression fitting into the bottom of the housing and distributed evenly through the sintered matrix plug cross section. Any pressure surge in the fuel flow is normalized in the cavity located below the sintered plug within the housing. Likewise the concentric shroud ring inert gas º” compression fitting into the main-body insures a dampened smooth flowing shielding of the flame from the outside environment and stabilizes the flame above the sintered plug. A cooling circuit within the plug matrix is embedded during the sintering process. It consists of an equally spaced helix of 1/8” metal tubing planar to the plug surface, thereby any radial temperature gradient is minimized. The cooling of the plug further prevents flash back from occurring.