KAJIAN EKSPERIMENTAL PENGARUH PANJANG CHORD SUDU TERHADAP UNJUK KERJA TURBIN HELIK UNTUK SISTEM PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH)
Abstract: All this time
microhydro power plants (MHP) created a resource use of water flow has high fall of water (head)
while for areas that have stream of river but do not have high fall of water
(head) still a lot of untapped but has potential hydrokinetic be able rotating
turbine. This is what lies behind the research conducted to determine the
effect of chord length on the performance of the helical turbine which is
expected to come helical turbine performance as the optimum use of the
potential hydrokinetic. Helical turbine tested had dimensions of 1.2 m high and
1 m in diameter, blade profile NACA 0030, chord length 15 cm, 20 cm and 25 cm
with number of blades 3 pieces. Tests performed on the irrigation canals that
open to varying water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s. From the test
results obtained helical turbine performance as follows. The largest torque
obtained in water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 3.89 Nm, 27.09
Nm and 39.38 Nm is the chord length of the turbine with 25cm and the smallest
torque on the chord length of 15 cm of 2.31 Nm. Power largest turbine in the
water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 7.12 Watt, 60.41Watt and
103.96 Watt, turbine that is on the chord length of 25 cm and the smallest
turbine power chord length of 15 cm by 3.58 watts. Largest turbine efficiency
at water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 8.44%, 32.02% and 33.84%
in the turbine with a chord length of 25 cm and efficiency the smallest
turbines on the chord length of 15 cm of 1,17%.
Penulis: Ahmad Rapa'i, Jorfri
B Sinaga, M.Dyan Susila
Kode Jurnal: jptmesindd140483
