Desain dan Pengecoran Runner Propeller Berbahan Kuningan (60% Cu / 40% Zn) untuk Turbin Air Berdaya 118 W dan Debit 12 L/S dengan Cetakan Pasir

Abstract

Turbine runner has a function to convert hydraulic energy of a water flow to mechanical energy. There are many types of hydraulic turbine runner, which one of them is propeller. Propeller runner has characteristics of low head value and high water velocity which make it suitable to be used at torrential water flow areas. Thanks to these characteristics, it’s possible to construct a hydraulic power plant that generates high power output but requires low elevation between the water surface and the runner. This Final Project aimed to understand the production of a propeller runner for hydraulic turbine by using sand casting method and to understand comparisons between planning and practice during the production process. The production uses brass (Cu 60% / Zn 40%) as manufacturing material which has good corrosion resistance. The design of propeller runner for this Final Project is based with power plan of 118 W and discharge of 0.12 l/s. The acquired result is a design of a propeller runner with outer diameter of 0.16 m which is small enough to be used for a small sized hydraulic power plant