Kennie A. Lempoy, Rudy Soenoko, Slamet Wahyudi, Moch. Agus Choiron
Water potential sources as an alternative energy basically will never run for the foreseeable future.This alternative energy is needed and one of them is a power generation especially for rural areas. There are a lot of water energy sources in Indonesia, especially energy sources from river water flow. One of the very large potential water flow energy is the kinetic energy, this an energy produces due to the water flow velocity. This water velocity energy could be effectively implemented as a rural electricity generation for rural areas which is not yet reached by the national electricity grid. The purpose of this study is to obtain the optimum conditions on the performance of aninner movable blade vertical shaft type kinetic turbine. This research is done experimentally and the resesearch devices ware made in a laboratory scale study.The turbine tested is a vertical shaft kinetic turbine equipped with eight bowled blades.The Response Surface Methodology is used to obtain the turbine performance mathematical equations at an optimum turbine conditions. In this study, the response variable is the turbine power and the turbine efficiency, while the independent variables used are the water flow steering angle which is 30°, 40° and 50° the water flow speed which is 1.7; 2.2; 2.7 m/sec.; and the turbine rotation which is 35, 45, 55 rotation per minute.From the observation result and analysis it is found and Emperical Model for a Full Quadratic turbine power Testing Model based on response surface model analysis a mathematical model as follows: Y1 = 6.193 – 0.17X1 + 0.56X2 + 0.94X3 - 0.25X12– 0.4X22–0.21X32 + 0.25X1.X2– 0.23X1.X3 + 0,24X2.X3. Where: Y1 = Power Turbine Blade Bowl, X1 = steering angle, X2 = rate of flow and X3 = Turbine rotation. The turbine efficiency Full Quadratic model based on the response surface model analysis produces a mathematical model as follows: Y2 = 10.36 + 1.97X1– 6.38X2 + 1.51X3–0.62X12 + 1.31X22 – 0.04X32– 0.95X1X2– 0.54X1X3– 0.32X2X3. where: Y2 = Bowled Blade Turbine Efficiency, X1 = water flow steering angle, X2= water flow speed and X3 = turbine rotation. © Research India Publications.
Brawijaya University, Mechanical Eng. Department, Malang, 65145, Indonesia; Brawijaya University, Mechanical Engineering Department, Malang, 65145, Indonesia
