STUDI EKSPERIMENTAL PENGARUH RASIO DIAMETER INLET DAN OUTLET BASIN PADA TURBIN GRAVITASI VORTEX SKALA LABORATORIUM

Mouti, Naufal Khoodhi (2021) STUDI EKSPERIMENTAL PENGARUH RASIO DIAMETER INLET DAN OUTLET BASIN PADA TURBIN GRAVITASI VORTEX SKALA LABORATORIUM. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Turbin gravitasi vortex merupakan pembangkit listrik tenaga air yang termasuk dalam kategori pembangkit listrik mikro-hidro yang memanfaatkan energi dalam pusaran air (vortex) untuk memproduksi listrik, turbin jenis ini dikenal dengan turbin yang hanya membutuhkan head kecil pada range 0,7 – 1,2 m untuk beroperasi. Pada turbin gravitasi vortex terdapat beberapa parameter penting yang dapat mempengaruhi peforma turbin antara lain vortex height, rasio diameter inlet dan outlet (d/D), dan dimensi basin. Pada penelitian ini dilakukan analisa studi eksperimental mengenai pengaruh rasio diameter inlet dan outlet basin pada turbin gravitasi vortex skala laboratorium terhadap karakteristik dan peforma aliran vortex. Dari hasil penelitian ini ditemukan rasio d/D basin memberikan pengaruh pada ketinggian vortex height dimana semakin besar rasio d/D dapat berakibat pada penurunan nilai vortex height, perubahan cone angle memberikan efek pada peningkatan kecepatan tangensial yang dihasilkan pada turbin gravitasi.. Performa aliran vortex terbaik didapatkan pada variasi cone angle 20⁰, debit 2,25 L/s dan rasio d/D 0,2 dengan vortex heighht sebesar 19,62 cm dan air core diameter 12,53 cm.
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Gravitational vortex water turbine (GVWT) is a hydroelectric power plant that is included in the category of micro-hydro power plants that utilize energy in a vortex to produce electricity, this type of turbine is known as a turbine that only requires a small head in the range of 0.7 m – 1.2 m to operate. In gravitational vortex water turbines, there are several important parameters that can affect turbine performance, including vortex height, inlet and outlet diameter ratio (d/D), and basin dimensions. In this research, an experimental study analysis was conducted on the effect of the ratio of the inlet and outlet basin diameters (d/D) on a laboratory-scale gravitational vortex water turbine on the characteristics and performance of the vortex flow. From the results of this study, it was found that the d/D ratio of the basin had an effect on the height of the vortex height where the greater the d/D ratio could result in a decrease in the value of the vortex height, changes in the cone angle have an effect on increasing the tangential velocity generated in the gravity turbine.. The best vortex flow performance was obtained at a cone angle variation of 20, a discharge of 2.25 L/s and a d/D ratio of 0.2 with a vortex height of 19.62 cm and an air core diameter of 12.53 cm.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Vortex, Vortex height, rasio d/D, Cone angle, Air Core Diameter
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering
Depositing User:	Naufal Khoodhi Mouti
Date Deposited:	27 Aug 2021 04:00
Last Modified:	27 Aug 2021 04:00
URI:	http://repository.its.ac.id/id/eprint/89907

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