Studi Eksperimen Perbandingan Diameter Runner dan Variasi Sudut Stagger (0° dan 20°) terhadap Performa Water Vortex Turbine

Ramadhan, Dyon Athallah (2023) Studi Eksperimen Perbandingan Diameter Runner dan Variasi Sudut Stagger (0° dan 20°) terhadap Performa Water Vortex Turbine. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Akses terhadap energi listrik masih menjadi kebutuhan primer manusia dan memberikan dampak yang signifikan pada kualitas hidup dan akses ke layanan dasar. Suplai tenaga listrik dihasilkan dari proses transformasi energi lain, contohnya air yang dimanfaatkan sebagai Pembangkit Listrik Tenaga Air (PLTA). Salah satu bentuk pengembangan PLTA skala laboratorium dapat berupa Pembangkit Listrik Tenaga Mikro Hidro (PLTMH). Sistem tersebut umumnya menggunakan turbin air, sedangkan turbin air yang digunakan penelitian ini adalah water vortex turbine atau bisa juga disebut Gravitational Water Vortex Turbine (GWVT) dengan head 0,7 m. Water vortex turbine tergolong jenis selain turbin impuls dan turbin reaksi, namun memiliki kecenderungan seperti turbin reaksi. GWVT pada penelitian ini menggunakan metode eksperimen, memiliki bentuk basin conical concave diameter 500 mm dengan inlet notch 20° serta diameter runner (350 mm & 450 mm) dengan bentuk curved dan variasi sudut stagger (0° & 20°). Performa GWVT dapat diilustrasikan dalam bentuk grafik nilai torsi, daya turbin, dan nilai efisiensi turbin terhadap variasi debit (250 lpm hingga 500 lpm). Kesimpulan dari eksperimen ini runner 20° ; 350 mm menghasilkan nilai efisiensi tertinggi yakni 22,02%. Peringkat kedua dihasilkan oleh runner 0° ; 350 mm dengan nilai efisiensi tertinggi 19,05%, peringkat ketiga oleh runner 20° ; 450 mm dengan nilai efisiensi rata-rata 16,22%, dan peringkat keempat oleh runner 0° ; 450 dengan nilai efisiensi rata-rata 15,92%. Hasil dari eksperimen ini menunjukkan bahwa runner dengan kombinasi diameter lebih pendek (350 mm) dan sudut stagger 20° menghasilkan nilai efisiensi yang lebih tinggi.
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Access to electricity remains a primary human need and has a significant impact on quality of life and access to basic services. Electric power supply is generated from the transformation process of other energies, for example water which is utilised by Hydroelectric facilities. One form of laboratory-scale hydropower development can be Micro Hydro Power Plants (MHP). This system generally uses a water turbine, while the water turbine used in this research is a water vortex turbine or can also be called a Gravitational Water Vortex Turbine (GWVT) with a head of 0.7 m. Water vortex turbine is classified as a type other than impulse turbine and reaction turbine, but has a tendency to be like a reaction turbine. The GWVT in this experimental study has a conical concave basin shape of 500 mm diameter with a 20° inlet notch and runner diameters (350 mm & 450 mm) with a curved shape and variations in stagger angle (0° & 20°). Several GWVT studies have shown that runner design parameters are one of the things that can differentiate GWVT performance results. GWVT performance can be illustrated in the form of graphs of torque value, turbine power value, and turbine efficiency value against discharge. The conclusion of this experiment is that the runner 20°; 350 mm produces the highest efficiency value of 22.02%. The second rank is produced by runner 0°; 350 mm with the highest value of 19.05%, the third rank by the runner 20°; 450 mm with the highest efficiency value of 16.22%, and the fourth rank by runner 0°; 450 with the highest efficiency value of 15.92%. The results of this experiment show that the runner with a combination of shorter diameter (350 mm) and 20° stagger angle produces higher efficiency values.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Water vortex turbine, Diameter Runner, Sudut Stagger, Performa GWVT, Runner diameter, Stagger angle, GWVT performance
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ870 Hydraulic turbines.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering
Depositing User:	Dyon Athallah Ramadhan
Date Deposited:	08 Dec 2023 07:10
Last Modified:	08 Dec 2023 07:10
URI:	http://repository.its.ac.id/id/eprint/102395

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