Design, fabrication and performance evaluation of low head pico hydro power generation system using cross flow turbine [manuscript]
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Date
2019
Authors
Jhovirey V. Victoria
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Abstract
Renewable energy systems are commonly used in providing electricity in the areas that do not have access of electricity and one of these systems is the Pico Hydro Power Generation System (PHPGS). This study was conducted to design, fabricate, and evaluate the performance of the low-head PHPGS using cross flow turbine. Specifically, the study aimed to design a low-head PHPGS that will install in irrigation canal; fabricate a low-head PHPGS using locally available materials; evaluate the performance of the low-head PHPGS in terms of efficiency; and perform a cost analysis of the system.
Result of the performance evaluation, using a permanent magnet generator at 0.1711 m³/s water flow rate, cross flow turbine shaft rotational speed of 182 RPM, generator rotational speed of 742 RPM, turbine torque of 0.27 kg-m; the low-head PHPGS could generate 9 watts, with the turbine efficiency of 36.28%.
Cost analysis of operating the Pico Hydro Power Generation System indicated a breakeven point of 1583kW/yr based on the investment cost of ₱10,395.00 (covering materials and labor cost), machine capacity of 0.216kW/hr and consumption rate of PHPGS of 1.75Php/kw-hr. The annual net income that can be generated is 2297.26Php/yr. The projected time needed to recover acquisition cost based on the machine capacity of 0.216kW/hr and operating time of 7,320 hr/year was 4.5 years.