Abstract
The gas turbine engine is finding progressively more acceptance in different applications with different operation and performance requirements. In this work, a model free power gas turbine engine, driving an electric dynamometer, is run in two modes, namely, a single and two-shaft operation using LPG as fuel. Experimental readings under controlled operating conditions and relevant calibration curves were used to calculate performance, including net power output, specific fuel consumption and engine thermal efficiency. Results show that operating a two-shaft engine in the single-shaft mode would boost the part load power tremendously. However, the torque characteristic of the two-shaft mode at part load is superior.
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