Rudy Soenoko
Fossil fuel energy shortages occur particularly in Indonesia, it is due to the depletion of oil reserves and high demand for better energy demand from the industrial sector and the general public. The national research priority agenda is increasing the utilization of micro-hydro renewable energy. From the above issues, it should be considered an attempt to improve the performance of a cross flow turbine with a variable-angle nozzle and a variable of water flow rate getting in the turbine runner. The purpose of this study is to determine the effect of the nozzle angle variations and the water flow rate variations towards the cross flow turbine performance on the first level power generation. This research is done experimentally and prepared in a laboratory scale. The turbine being tested has a specification of 20 pieces blades number, a 5 x 5 cm2 nozzle cross-sectional area, a 36 cm runner diameter and a 24 cm inner turbine diameter. The nozzle angle variation used is in the range of 30°to 75°and the water flow rate variation is by adjusting the opening valve in the range of 25% to 100%, the turbine would work on a more stable rotation. From the observation it is found that the large turbine nozzle jet entry angle on first level is 45° and a 100% valve opening would affect the cross flow turbine performance. © Research India Publications 2015.
Brawijaya University, Mechanical Engineering Department, Malang, 615145, Indonesia
