—In large water supply system where the source is elevated, the water reaches its destination with still a lot of energy to spare. This energy can be tapped by installing appropriate hydraulic turbine along the pipeline. A prototype gas/steam turbine-derivative axial flow impulse-type was designed and simulated using the Solid Works flow simulation software. It was then fabricated and tested. The experimental results indicated that at no load condition, the rotational speed ranges from 650 to 850 RPM depending on the water flow rate which ranges from 8.51 to 18.34 l/s. At 381 RPM, the torque was 3.05 N-m and the efficiency was 42%. The maximum efficiency occurred within the 300-350 RPM range. The flow at the exit was not much disturbed demonstrating that its installation did not hamper the supply line. It is recommended that further studies of prototypes designed on the same concept be done.
—Axial flow, gas/steam turbine-derivative, hydraulic turbine, impulse-type.
Mark D. Villanueva is with Mindanao State University, Iligan Institute of Technology, Philippines (e-mail: email@example.com).
Jonathan C. Maglasang is with the Department of Mechanical Engineering, the College of Engineering of MSU, Iligan Institute of Technology, Iligan City, Philippines.
Cite: Mark D. Villanueva and Jonathan C. Maglasang, "Computational and Experimental Study of a Gas/Steam Turbine ― Derivative Axial Flow Impulse-Type Hydraulic Turbine," International Journal of Materials, Mechanics and Manufacturing vol. 3, no. 2, pp. 86-91, 2015.