A swirler stabilized combustion chamber for a micro-gas turbine fuelled with natural gas

Author(s)

Krieger, Guenther C. ^[1] ; de Campos, Andre P. V. ^[1] ; Sacomano Filho, Fernando L. ^[1] ; de Souza, Rafael C. ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Mech Engn, BR-05508900 Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 34, n. 4, p. 441-449, OCT-DEC 2012.
• Web of Science Citations: 5

Abstract

Micro-gas turbines are a good alternative for on-site power generation, since their operation is very reliable. The possibility of operating with various fuels increases versatility and, as a result, the usage of these devices. Focusing on a performance improvement of a tri-fuel low-cost micro-gas turbine, this work presents investigations of the inner flow of its combustion chamber. The aim of this analysis was the characterization of the flame structure by the temperature field of the chamber inner flow. The chamber was fuelled with natural gas. In the current chamber, a swirler and a reversed flow configuration were utilized to provide flame stabilization. The inner flow investigations were done with numerical analysis, which were compared to experimental data. The analysis of the inner flow was done with numerical simulations, which used the RSM turbulence model. A β-PDF equilibrium model was adopted to account for the turbulent combustion process. Different models of heat transfer were compared. Thermal radiation and specially heat conduction in the liner walls played significant roles on results. (AU)

• FAPESP's process: 07/03072-1 - Development of a microgasturbine derived from automotive turbocharger for distributed energy generation
• Grantee: Guenther Carlos Krieger Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/03620-4 - Development of a compressor for a small gas turbine
• Grantee: André Perpignan Viviani de Campos
• Support Opportunities: Scholarships in Brazil - Master