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research-article

Analysis of a Dual Fuel MGT Combustor Through Numerical Simulations

[+] Author and Article Information
Alessandro Bo

Department of Mechanical Engineering, Roma Tre University, Rome, Italy
ing.alessandro.bo@gmail.com

Eugenio Giacomazzi

Energy Technology Department, ENEA Casaccia Research Center, Rome, Italy
eugenio.giacomazzi@enea.it

Giuseppe Messina

Energy Technology Department, ENEA Casaccia Research Center, Rome, Italy
giuseppe.messina.cas@enea.it

Antonio Di Nardo

Energy Technology Department, ENEA Casaccia Research Center, Rome, Italy
antonio.dinardo@enea.it

1Corresponding author.

ASME doi:10.1115/1.4040737 History: Received November 22, 2017; Revised June 28, 2018

Abstract

The work in this paper investigates on how a fuel flexible micro gas turbine (MGT) combustion chamber, developed by ANSALDO ENERGIA and installed in a Turbec T100 P MGT, can operate when transferring from natural gas to a hydrogen-rich syngas. A syngas composition which satisfies the fuel supply system specifications is identified. Such syngas contains (by volume) 45% of hydrogen, 50% of carbon dioxide and 5% of methane. The switch procedure from natural gas to syngas is defined and modelled. A series of non-reactive and reactive RANS simulations on a full-scale 3D model of the combustion chamber is then performed. The thermo-fluid dynamics inside its casing, the combustion regimes, the heat transfer across the liner walls as well as NOx emissions are evaluated. Results provide useful information on the operational problems associated to the fuel change and on how to define a successful fuel transfer procedure.

Copyright (c) 2018 by ASME
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