User:Jumiyanto/Jumiyanto SMA N 1 Karangmojo

Jumiyanto Software Development of Microhydro Civil Design ABSTRACT Hydropower development requires flow rate and available head. Flow is the volume of water in the river throughout the year. Head is the difference water levels that have mechanical energy, which can be used to rotate the turbine. Rotating turbine is connected to the generator and produces electricity. Changes mechanical energy into electricity requires a long process and a complicated calculation. Making microhydro power civil design software is needed to help count civilian aspect in the microhydro power. The research conducted by simulation using hypothetical data of electricity demand, availability flow rate and head. Hypothetical data of electricity demand is assumed with an interval of 10, 12, 15, 20, 30 and 60 minutes, or the other times for 24 hours. Hypothetical data of availability flow rate is assumed with an interval of at least one year and maximum is unlimited. Hypothetical data of head is assumed in units of meters. Hypothetical data used to calculate the daily reservoir and annual reservoir, intake, headrace, headrace bottom slope, forebay, diameter and thickness of penstock, penstock energy losses and power potential. The results showed that based on hypothetical data input daily electricity with power 150 DK, hypothetical data of flow rate (Q) 2.45 m3/s and head (H) 4 meter calculation result that daily reservoir capacity 2,59.104 m3, annual reservoir capacity 2,80.106 m3, intake height 1 m, water level 1.89 m and water surface elevation difference 0.11 m, headrace bottom slope 0.0000034, forebay area 1,60 m2 and long retention forebay 0.8 m, penstock diameter 0.41 m and penstock thickness 0.001771 m, trashracks energy losses 0.04 m, inlet  penstock energy losses 0.47 m, bend of penstock energy losses 0.05 m, friction penstock energy losses 0.16 m and power potential 10,08743 kW. Keyword : microhydro, flow, head, turbine, generator

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