500 W 급 마이크로 가스터빈 제너레이터용환형 연소기의 특성에 관한 연구
Study on the Characteristics of an Annular Combustor for a 500 W Class Micro Gas Turbine Generator
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In the present study, an annular combustor for a 500 W class micro gas turbine generator was designed andits characteristics were investigated by using both numerical and experimental methods. For this purpose,geometrical configurations of the annular combustor were determined in the aspect of the aerodynamic andchemical consideration. Also, fluid flow and pressure drop characteristics in the combustor were numericallystudied by using commercial tool, FLUENT. Based on the numerical results, the diameter and the angle ofair admission holes in the primary zone were chosen to be 2.5 mm and 30°, respectively. Finally, an integratedtest unit, which consisted of a compressor, combustor, turbine, and motor/generator, was developed in orderto measure the combustor efficiency. As the temperature difference between the combustor inlet and the turbineinlet or the air mass flow rate increased, the combustor efficiency increased and it was over 90% when theair mass flow rate was larger than 7.30 g/s. It was shown that the annular combustor developed in this studymet the design requirement for a 500 W class micro gas turbine generator.
Abstract
In the present study, an annular combustor for a 500 W class micro gas turbine generator was designed andits characteristics were investigated by using both numerical and experimental methods. For this purpose,geometrical configurations of the annular combustor were determined in the aspect of the aerodynamic andchemical consideration. Also, fluid flow and pressure drop characteristics in the combustor were numericallystudied by using commercial tool, FLUENT. Based on the numerical results, the diameter and the angle ofair admission holes in the primary zone were chosen to be 2.5 mm and 30°, respectively. Finally, an integratedtest unit, which consisted of a compressor, combustor, turbine, and motor/generator, was developed in orderto measure the combustor efficiency. As the temperature difference between the combustor inlet and the turbineinlet or the air mass flow rate increased, the combustor efficiency increased and it was over 90% when theair mass flow rate was larger than 7.30 g/s. It was shown that the annular combustor developed in this studymet the design requirement for a 500 W class micro gas turbine generator.
참고문헌 (10)
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