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Combustion performance of a counter-rotating double swirl flame burner under stratified burning condition

Cheng, Tung Chong and Shu, Shiung Lam and Hochgreb, Simone (2015) Combustion performance of a counter-rotating double swirl flame burner under stratified burning condition. Chemical Engineering Transactions, 45 . pp. 193-198. ISSN 2283-9216

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Official URL: http://dx.doi.org/10.3303/CET1545033

Abstract

A double-annulus counter-rotating premixed swirl burner was utilised to investigate the effect of varied air flow and equivalence ratio between the inner and outer annulus on the flame structure and emission performance. The air and methane gaseous fuel for each annulus were independently premixed at the plenum prior to combustion at atmospheric condition. Imaging of OH* chemiluminescence was performed to obtain the flame structure of stratified flames. Higher swirl flow for richer mixture in the inner annulus generates an elongated and enlarged area of flame reaction zone due to increased flame intensity. Emission measurements show the arrangement of leaner inner/outer richer premixed air/fuel produce emissions comparable to baseline case of homogenous mixture and flow. Under the arrangement of stratified mixture of richer inner/leaner outer annulus, significant higher emissions of CO, NO and NO2 were shown. Variation of the air flow split ratio between the annuluses affects emissions, in particular, higher inner/lower outer swirl flow arrangement results in higher emission rates under rich inner/lean outer mixture stratification.

Item Type:Article
Uncontrolled Keywords:combustion performance, emission measurement, emission performance, equivalence ratios, homogenous mixtures
Subjects:A General Works
ID Code:58084
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:29 Aug 2017 08:46

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