3.5MW급 2단 축류 증기 터빈의 설계에 따른 효율 및 성능 분석 = DESIGN AND PERFORMANCE INVESTIGATION OF A 3.5MW TWO-STAGE AXIAL STEAM TURBINE

다국어 초록 (Multilingual Abstract)

A steam turbine is a well-known energy conversion device that transforms high pressure steam energy into the mechanical work. This mechanical work is generally used for electricity generation or to operate mechanical machinery. In this study, we developed the three-dimensional airfoils and flow paths for micro scale axial steam turbine blades adopting both one dimensional and two dimensional design techniques. The steam turbine has been designed with the objective of achieving an output power exceeding 3.5 MW and an efficiency nearly the 50%. The averaged radius of the steam turbine was set at 262.75 mm and the rotational speed of the the blades was targeted at 6000 RPM. The simulation was conducted under varying inlet operating pressure while maintaining a constant temperature. The numerical investigation result indicated that the designed steam turbine achieved a output power of approximately 3.9 MW and an efficiency of 48.45% at an operating pressure of at 47 bar.