Abstract
Microturbines are small gas turbines that have the capacity range of 25-300 kW. The main components of microturbine are compressor, turbine, combustor and recuperator. This research paper focuses on the design of radial inflow turbine that operates in 30 kW microturbine. In order to operate the 30 kW microturbine with the back work ratio of 0.5, the radial inflow turbine should be designed to produce power at 60 kW. With the help of theory of turbo-machinery and the analytical methods, the design parameters are derived. The design results are constructed in 3D geometry. The 3D fluid-geometry is validated by computational fluid dynamics (CFD) simulation. The simulation results show the airflow path, the temperature distribution, the pressure distribution and Mach number. According to the simulation results, there is no flow blockage between vanes and no shock flow occurs in the designed turbine.
Highlights
Microturbines are small gas turbines that have the capacity range of 25-300 kW
In order to investigate the appropriate geometry of radial inflow turbine for 30 kW microturbine applications, the theory of turbo machinery is applied and the analytical design result is validated by the methods of computational fluid dynamics (CFD)
This research paper focuses on the design of radial inflow turbine that operates in 30 kW microturbine
Summary
Microturbines are small gas turbines that have the capacity range of 25-300 kW. The design and analysis of a radial inflow turbine that is a specific kind of turbine is suitable for microturbine application. In order to investigate the appropriate geometry of radial inflow turbine for 30 kW microturbine applications, the theory of turbo machinery is applied and the analytical design result is validated by the methods of computational fluid dynamics (CFD). The method of computational fluid dynamics (CFD) is a branch of fluid mechanics that applies numerical analysis and algorithm to analyse the fluid flow problem and has been widely used in several research papers as shown [2]. This research paper analyses an intermediate pressure steam turbine using CFD. The working fluid has the same composition throughout the cycle and is a perfect gas with constant specific heats. Heat transfer in a counterflow heat exchanger (recuperator) is complete so that the temperature rise on the cold side is the maximum as possible and can be considered as exactly equal to the temperature drop on the hot side
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