KAJI EKSPERIMEN OPTIMASI KOEFISIEN DAYA SKEA JENIS POROS DATAR DENGAN SUDU GABUNGAN SILINDER BERPUTAR DAN ROTOR SAVONIUS
Abstrak
Horizontal Axis Wind Energy Conversion System (HAWECS) is more efficient than other Wind Energy Conversion Systems at the same condition [2,3]. Rotating cylindrical blade is taken as the substitute alternative to the airfoil blade considering that presence of lift force and its simple manufacturing production. The lift force generated by the rotating cylinder is known as the Magnus Effect [1,7,9]. The savonius rotor in this research is employed to propel the cylinder. This research conducted an experiment to optimize the energy conversion of a HAWECS which its blades consist of the combination of cylinder and savonius rotor. Two kind of blades were used in this experiment, i.e.blade with L/D (ratio of the length and diameter of cylinder) equals to 3 and 4. Three variations of wind velocities were used, i.e. 8.5 m/s, 9.7 m/s, and 10.2 m/s. Experimental results present that the blade with L/D ratio = 4 give more efficient than the L/D = 3, and the increase of power was reached if the wind velocity increases.
Referensi
H.R. Vaughn and G.E. Reis, " A Magnus
Theory" , AIAA Journal, vol.11, no. 10, pp. 1397-
, 1973.
Park, Jark, "Simplified Wind Power Systems for
Experimenter" , California Helion, Inc., 1976.
Eldridge, Frank. R, "Wind Machines" , New York:
Van Nostrand Reinhold Company, 1980.
D. Le Gourieres, " Wind Power Plants: Theory
and Design" , 1982.
Queru, Gautier, "Integration de l'energie Eolienne
dans le batiment: Etude de dispositifs
concentrateurs de vent" , Projet de fin d'etudes,
N. Fujizawa, F. Gotoh, " Experimental Study on
the Aerodynamic Performance of a Rotor
Savonius" , 1994.
T. Tokumaru, P.E. Dimotakis, " The Lift of a
Cylinder Executing Rotary Motions in a Uniform
Flow" , J. Fluid Mech., vol. 225, pp. 1-10, 1993.
Bono, Fraunie, Bequier, Favre, "Optimization
d'une Eolienne a Cylindres Tournants" , CRAS,
t.301, seri II, no.6, pp. 363-366, 1985.
Sanjay Mittal B., Kumar Bhaskar, "Flow Past a
Rotating Cylinder" , J. Fluid Mech., vol. 476, pp.
-334, 2003.
Jean Martin, "Energy Eolienne" , L'Ecole
Nationale Superieure des Arts et Metiere, Article
B 8585, vol. BE, consultable jusqu'au 2004.
Sahin A.Z., Al-Garni A.Z., Al- Farayedhi A.,
"Analysis of a Small Horizontal Axis Wind
Turbine Performance" , Int. J. of Energy Res.,
vol.25, pp. 501-506, 2001.
