Abstract
Flame stability and behavior inside meso-scale combustor with different flame holder was investigated experimentally. Three types of flame holder i.e. wire mesh, flat plate with circular holes and flat plate with narrow slits, were used to improve the flame stability inside the meso-scale combustor. Combustor with flat plate - narrow slits flame holder has the best flame stability, i.e. stable flame established inside the combustor at the highest reactant velocity compared to the other combustor with the different flame holder. Furthermore, combustor with wire mesh and flat plate with narrow slits have a relatively uniform flame colour at the combustor cross section, compared to flame visualization inside meso-scale combustor with flame holder of flat plate with circular holes. This phenomena is related to non-uniform reactant distribution on the combustor cross section.
Highlights
The development of micro-power generator (MPG) promotes many researchers about micro- and meso-scale combustor as a main component of the micro-power generator [1,2]
Wire mesh has a purpose as flame holder and improves heat recirculation from the flame to the unburned reactant through heat conduction on the combustor wall
The wire mesh was made from stainless steel, while the flat plate flame holders were made from copper
Summary
The development of micro-power generator (MPG) promotes many researchers about micro- and meso-scale combustor as a main component of the micro-power generator [1,2]. Many researches were conducted to improve flame stability inside micro- and mesoscale combustor, such as using backward facing step [3,4], wire mesh [5,6], as well as using plate flame holder [7]. For the same combustor and reactant, combustor with wire mesh flame holder has more stable combustion than combustor with backward facing step This is important to understand the role of the flame holder type on the heat recirculation, flame stability and behavior in meso-scale combustor
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