PERANCANGAN KINCIR AIR UNDERSHOT SEBAGAI PEMBANGKIT LISTRIK TENAGA MIKROHIDRO

IRWANTO, ASEP and Kaprawi, Kaprawi (2016) PERANCANGAN KINCIR AIR UNDERSHOT SEBAGAI PEMBANGKIT LISTRIK TENAGA MIKROHIDRO. Undergraduate thesis, Sriwijaya university.

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Abstract

In Indonesian, especially South Sumatra has a lot of potential energy of water that can be used as a micro hydro power plant. Undershot waterwheel is one type of micro-scale water wheel that can be used as an independent power plants in areas that have the potential energy of water for making a simple and cheap maintenance. In this research is focused on designing undershot waterwheel with different surface of the water is 2 m. The design is done to get an undershot waterwheel was good design with maximum performance. There are some factors that can affect the performance of the waterwheel, for example number of blades and dimensions of water wheel. Al the design process will be determined the dimensions and the number of blades to get the maximum performance of water wheel. Water wheel can be defined as mechanical equipment in the form of wheel with blades that are in the perimeter, which i s placed on a horizontal axis. Waterwheel function to convert water energy into mechanical energy in the form of torque and shaft rotation of waterwheel. Undershot waterwheel is the type most often used because it is simple, cheap and easy to building process. In this research using a design method which the water wheel was designed by considering the initial parameters have been determined. Some parameters are determined as a starting point are different the water surface is 2 m, wide channel of water is 0.8 m, depth channel of water after passing sluice gate is 0.5 m, coefficient discharge is 0.5 and the coefficient drag is 1.9. Design process starts with determining the dimensions of the water wheel and then calculated the power and efficiency theoretically. In addition to designing the waterwheel, also was designed a support system that consists of some elements machines including the design of shaft, the selection of bearings, transmission system, and the selection of generator. In the design of the shaft had determined diameters of shaft and materials to be used. At the selection of bearings have selected types of bearings and bearing size are used. To design a transmission system are used determined what the appropriate transmission system is used to pass on power ffom the waterwheel to a generator. After that the design illustrated in 2D and 3D with the help of the Software Solidwork 2016. Based on the analytical design process with specified initial dimensions of waterwheel as the initial of design which the flow rate and flow velocity known respectively are 1.17 m3 / s and 2.93 m / s, it’s generated an undershot water wheel design that has a 1,157 k W and efficiency generated is 23% with a diameter of wheel 2 m, wide of wheel is 0.7 m, number of blade is 8 and a rotation of waterwheel is 9.33 rpm. For the design of undershot water wheel with good design to have a maximum efficiency of about 35 to 45%. Then the initial design of undershot waterwheel is necessary modifications to improve its performance in order to be more efficient. Modifications were made to changing the dimensions of waterwheel and number of blades if s used. After modification obtained a final design is selected the design of no.10 which the generated power of wheel is 2,228 kW with an efficiency is 44% with diameter of a wheel is 2.6 m, number of blades are used 14 and rotations the resulting is 7.18 rpm. Based on the results of the calculation, the selected of shaft material is carbon Steel S45C-D Standard of Japan (JIS), and the size of the shaft are used 60 mm. This type of bearing used is the type bearing UCP 212. The transmission system that used to move power from waterwheel to the generator is a system of pulleys and belts. From the result in this research, can be concluded any factor that can affect its performance. Among these is the number of blades, diameter of wheel, the width of the waterwheel, and etc. The number of blades have major influence on the performance undershot waterwheel. The greater number of blades are used then the greater the generated power by waterwheel But the number of the blades was too much will cause the water does not to flow freely around the blade and will reduce the power generated.. Suggestions from this research, if there are potential energy source water as described with different of the water surface elevation is 2 m in areas that have water flow, these design of undershot waterwheel have to be realized. Keywords Citations : waterwheels , undershot waterwheel, micro hydro : 17(1978-2014)

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	kincir air, kincir air undershot, mikrohidro
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ163.26-163.5 Energy conservation
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Ichlasyah Aisyah
Date Deposited:	29 Aug 2025 03:02
Last Modified:	29 Aug 2025 03:02
URI:	http://repository.unsri.ac.id/id/eprint/183461

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