Preprint Article Version 1 This version is not peer-reviewed

Experimental Flame Front Characterisation in a Lean Premix Burner Operating with Syngas Simplified Model

Version 1 : Received: 15 April 2019 / Approved: 16 April 2019 / Online: 16 April 2019 (12:40:24 CEST)

A peer-reviewed article of this Preprint also exists.

Canepa, E.; Nilberto, A. Experimental Flame Front Characterisation in a Lean Premix Burner Operating with Syngas Simplified Model Fuel. Energies 2019, 12, 2377. Canepa, E.; Nilberto, A. Experimental Flame Front Characterisation in a Lean Premix Burner Operating with Syngas Simplified Model Fuel. Energies 2019, 12, 2377.

Journal reference: Energies 2019, 12, 2377
DOI: 10.3390/en12122377

Abstract

The recent growing attention to energy saving and environmental protection issues has brought to attention the possibility of exploiting syngas from gasification of biomass and coal for the firing of industrial plants included the so called Integrated Gasification Combined Cycle ones. In order to improve the knowledge about the employ of syngas in lean premixed turbulent flames, a large scale swirl stabilized gas-turbine burner has been operated with a simplified model of H2 enriched syngas from coal gasification. The experimental campaign has been performed at atmospheric pressure with operating conditions derived from scaling the real gas turbines ones. The results are here reported and consist of OH-PLIF measurements carried out at decreasing air equivalence ratio conditions and are analysed together with the mean aerodynamic characterisation of the burner flowfield in isothermal condition. The OH concentration distributions have been analysed statistically in order to obtain information about the location of the most reactive zones and an algorithm has been applied to the data in order to identify the flame fronts. In addition, the flame front locations have been successively interpreted statistically in order to obtain information about their main features and about their dependence on the air to fuel ratio behaviour.

Subject Areas

gas turbine burner; syngas lean premixed flames; OH-PLIF; flame front detection

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