Design, Fabrication and Performance Evaluation of Propeller Turbine for Low Head Pico Hydro Power Generation System [manuscript]
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Date
2019
Authors
John Karlo G. Domingo
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Abstract
The electricity is mostly used by households for power lighting. The increasing cost and demand of it are due to the increase in population, advancement of science and technology and difficult construction of power lines particularly in rural areas. This study was conducted to design and fabricate a PHP generation system to generate electricity by utilizing irrigation water flow to supplement household power demand and contribute in household lighting. Specifically, the study aimed to evaluate the performance of the PHP generation system in terms of turbine efficiency and conduct a cost analysis in using the PHP generation system.
The design of PHP generation system was based on design considerations and calculations as suggested by literatures. The PHP generation system was fabricated considering locally available materials and manufacturing technology. It has six major components, namely: turbine, inlet basin, draft tube, generator, structural frame, and weir.
The propeller turbine efficiency of 42.37% wa produced at water depth of 0.30m, water velocity of 27.22 m/s, water discharge of 0.118 m³/s, permanent magnet generator shaft rotational speed of 1,223.08 rpm, voltage of 9.78 volts, and power output of 15 watts.
Cost analysis of operating the PHP generation system indicated a break-even point of 2,395 kW/yr and consumption rate of ₱1.75/kWh. The projected time needed to recover acquisition cost was 4.52 years.