Design and Numerical Simulation of Cross Flow Water Turbine at Net Head 30 m with Maximum Discharge 0.527 m 3 /s
Indonesia is an archipelago country with large number of population and increasing demand of electricity every year. The fulfilment of the electricity needs is still obstructed in several areas outside of PLN electricity grids, causing low electrification ratio in such place even though they hav...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/43541 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Indonesia is an archipelago country with large number of population and increasing
demand of electricity every year. The fulfilment of the electricity needs is still obstructed in
several areas outside of PLN electricity grids, causing low electrification ratio in such place
even though they have adequate number of natural energy resources. One form of natural
energy resource is water. Water is one of the renewable energy resources that is highly
available in Indonesia and that energy can be used as electricity energy source for the area
with low electrification ratio. Problem in utilizing water energy is that the construction of
hydro power generation is still rather complex. The purpose of this undergraduate final
project is to design crossflow water turbine which is a turbine with relatively low geometry
complexity. The design process includes geometry calculation and numerical simulation of
crossflow water turbine. Data that are being used in design process of the turbine are net
head 30 meter and maximum discharge 0.527 m3/s. Three angle of nozzle angle opening are
tested to obtain turbine design with best efficiency. Simulations are also done with several
variation of runner speed and guide vane opening to obtain turbine characteristics.
Based on the results of geometry calculation, numerical simulations, and analysis,
the dimensions of runner are obtained with outside diameter 437 mm and inside diameter
288 mm. The turbine runner consist of 24 blades made from NPS 5 Schedule 10 pipe. The
nozzle is equipped with a guide vane with profile Wortmann FX69PR281-il. The designed
turbine gives best efficiency 63.9% and generates 98.7 kW power at turbine with nozzle
opening angle 90o and guide vane opened 100%.
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