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The Effects of the Design of the Cap of a Natural Gas-fired Cooktop Burner on Flame Stability by R. Junus; J. E. Vierkant; J. F. Stubington; G. D. Sergeant; I. Tas is a Engineering article available to read on EtoBox.

What is The Effects of the Design of the Cap of a Natural Gas-fired Cooktop Burner on Flame Stability about?

Results of an investigation aiming to study the effects of the burner cap design factors on flame stability are presented in this paper. Flame stability is an essential part of the operation of all domestic burners, including natural gas-fired cooktops. At high thermal inputs flame lifts are encountered above certain levels of primary aeration, whereas flashback only takes place at low thermal inputs, due to natural gas' low flame speed, above certain levels of primary aeration. In this work, flame lift limits were measured at 3•3 kW thermal input and the highest primary aeration above which flame lifts started to become visible was the stability limit at this thermal input. Around 60% primary aeration was desired to minimize pollutant emissions. Turndown tests were done at 40% primary aeration. The lowest thermal input below which the flame flashed back in less than 30 s was the turndown limit. A turndown ratio of at least 5 was aimed for (i.e. 0•67 kW or less would be desirable). The cap design factors studied were: the angle under the cap, the angle under the overlap, the shape under the cap, the size of the cap overlap, the height of overlap above the burner, cap material and c

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Author

R. Junus; J. E. Vierkant; J. F. Stubington; G. D. Sergeant; I. Tas

Publisher

Hindawi Limited

Published

1998

Language

EN

Field

Engineering (Physical Sciences)