Authors : A.S. Adavbiele and S.O. Amiebenomon
Abstract: The performance increase of a turbofan engine through the use of isothermal combustion inside the high-pressure turbine (High-Pressure Turburner, HPTB) is currently being investigated as an alternative form of thrust augmentation on the best propulsion system for a next-generation supersonic cruising (Mach 2 to Mach 4) aircraft. It is evident that not all energy is available to do work. Therefore, a cycle analysis using the conventional performance criteria such as work ratio, specific fuel consumption and efficiency will only reveal the system performance. In order to include the effects of the surrounding and level of imperfection in flow processes; this study was focused on the investigation of the performance optimization of the super-cruise engine using exergy method. By carrying out the energy balance of the first law and the concepts of reversible process and available energy, which are basic to application of the second law, from the energy utilization diagram, significant and unexpected imperfection on the flow processes were calculated, which allow improvements on the system performance to be suggested. It was shown that in the specific plant analyzed improving the turbine flow process yielded a considerable exergy saving.
A.S. Adavbiele and S.O. Amiebenomon , 2008. Optimization of the Performance of a Super-Cruise Engine with Isothermal Combustion Inside the Turbine Using Exergy Method. Journal of Engineering and Applied Sciences, 3: 357-362.