ABSTRACT
EXPERIMENTAL TEST OF THE EFFECT OF VARIATION OF BLADE
ANGLE BULKHEAD ON HALF-CIRCULAR SLAVES ON THE POWER AND EFFICIENCY OF THE
HORIZONTAL SHAFT CROSSFLOW REACTION TURBINE
Name : Fitri Fadila
Rohmi
NIM : 17050754038
Study
Program : S1 Mechanical
Engineering
Department : Mechanical Engineering
Faculty
: Faculty of
Engineering
Institution
: The State
University Of Surabaya
Supervisor :
Priyo Heru Adiwibowo, S.T., M.T.
One
source of electrical energy comes from fossil fuels, but the availability of
fossil fuels is dwindling every year. This is of course inversely proportional
to the increasing number of community needs. A water turbine is a device that
can convert the energy of water into motion energy which will generate
electricity. The crossflow turbine is an example of a water turbine. However,
the power produced by the crossflow turbine tends to be low, so it is necessary
to develop a crossflow turbine. The purpose of this study was to determine the
turbine blade angle which has the most optimal power and efficiency.
This
research uses an experimental method by varying the bulkhead angle on the
semicircular cross-sectional blade on the horizontal axis crossflow reaction
turbine. The turbine bulkhead angles used are 60°, 75°, and 90° which were
tested with variations in water capacity of 9.572 L/s, 11.024 L/s, 14,322 L/s,
16,152 L/s, and 18,113 L/s. While the variation of loading is 500 grams, 1000
grams, 1500 grams, and so on until the turbine stops rotating.
The
results of this study found that the turbine with a bulkhead angle of 75˚ has
the highest power compared to a bulkhead angle of 60˚ and a bulkhead angle of
90˚. The highest power is produced at a capacity of 18,113 L/s, with a turbine
power of 4.194 Watts at a loading of 12000 grams. The highest efficiency is
also produced at a bulkhead angle of 75˚ at a capacity of 11.024 L/s, with an
efficiency value of 88.29% at a loading of 4500 grams. This is because the 75˚
bulkhead angle is able to utilize the water flow well on the inside of the
turbine blade angle so that it produces a large thrust and is able to rotate
the turbine with high rpm and large torque.
Keywords
: Crossflow Turbine, Power, Efficiency, Bulkhead Angle.