ANALISIS NUMERIS KINERJA TURBIN HYDROCOIL AKIBAT PERUBAHAN DIAMETER PESNTOCK DI DESA SUKAJAYA KECAMATAN LEMBANG JAWA BARAT

ALIF, IRFAN (2023) ANALISIS NUMERIS KINERJA TURBIN HYDROCOIL AKIBAT PERUBAHAN DIAMETER PESNTOCK DI DESA SUKAJAYA KECAMATAN LEMBANG JAWA BARAT. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

The turbine used in this study is a reaction turbine called hydrocoil turbine. In hydrocoil turbines require components that are penstock pipes to support turbine performance, the size of the penstock pipe has its own potential. Errors in determining the diameter of the penstock can affect the performance of hydrocoil turbines. The purpose of this study is to perform penstock comparison using ansys with a diameter of 6 inches, 8 inches and 10 inches and determine the diameter of the penstock to get the best hydrocoil turbine performance. This study was conducted using Computational fluid dynamics (CFD) method which includes torque, turbine power, and efficiency, the results of the analysis of the calculation of the highest torque value obtained by the highest torque value obtained by the 6-inch penstock at 150 rpm rotation of 110,77 Nm, and the lowest torque value obtained by the 10-inch penstock at 150 rpm rotation of 98,916 Nm. Then the highest power value obtained by the 6- inch penstock at 950 rpm rotation of 8143,78 Watts and the lowest power obtained by the 10-inch penstock at 950 rpm rotation of 4767,66 Watts. So that the highest efficiency value obtained by 6 inch penstock at 950 rpm rotation of 50,02% and the lowest efficiency value obtained by 10-inch penstock at 150 rpm rotation of 9,53 %. The results obtained are the highest hydrocoil turbine efficiency with penstock variation, at a rotational speed of N=950 rpm. The highest efficiency for hydrocoil turbine with 6, 8, 10 inch penstock is 50,02 %, 40,33%, and 29,28%, respectively. Meanwhile, the flow velocity at Rotary speed N=950 rpm for 6, 8, 10 inch penstock is 6,163 m/s, respectively; 5,933 m / s; and 3,719 m / s. This shows that 6 inch penstock is the most appropriate to use for hydrocoil turbine with the highest flow rate and efficiency, and it can also be proven that the best hydrocoil turbine performance is based on the greater the flow rate value. Keywords: Hydrocoil turbine, Penstock pipe, Computational Fluid Dynamics (CFD), Penstock Diameter Turbin yang digunakan pada penelitian ini adalah turbin reaksi yang dinamakan turbin hydrocoil. Pada turbin hydrocoil memerlukan komponen yaitu pipa penstock untuk menunjang kinerja turbin, besar kecilnya pipa penstock memiliki potensi tersendiri. Kesalahan dalam penentuan diameter penstock dapat berpengaruh terhadap kinerja turbin hydrocoil. Tujuan dari pada penelitian ini adalah melakukan perbandingan penstock menggunakan ansys dengan ukuran diameter 6 inci, 8 inci dan 10 inci dan menentukan diameter penstock untuk mendapatkan kinerja turbin hydrocoil yang terbaik. Penelitian ini di lakukan dengan menggunakan metode Computational fluid dynamics (CFD) yang meliputi torsi, daya turbin, dan efisiensi maka hasil analisis perhitungan nilai torsi tertinggi didapatkan nilai torsi tertinggi didapatkan oleh penstock 6 inci pada putaran 150 rpm sebesar 110,77 Nm, dan nilai torsi terendah didapatkan oleh penstock 10 inci pada putaran 150 rpm sebesar 98,916 Nm. Kemudian nilai daya tertinggi didapatkan oleh penstock 6 inci pada putaran 950 rpm sebesar 8143,78 watt dan daya terendah didapatkan oleh penstock 10 inci pada putaran 950 rpm sebesar 4767,66 watt. Sehingga nilai efisiensi tertinggi didapatkan oleh penstock 6 inci pada putaran 950 rpm sebesar 50,02 % dan nilai efisiensi terendah didapatkan oleh penstock 10 inci pada putaran 150 rpm sebesar 9,53 %. Hasil yang didapatkan adalah efisiensi turbin hydrocoil tertinggi dengan variasi penstock, berada di kecepatan putar N = 950 rpm. Efisiensi tertinggi untuk turbin hydrocoil dengan penstock 6, 8, 10 inci masing-masing adalah 50,02 %, 40,33 %, dan 29,28 %. Sementara itu, kecepatan aliran pada kecepatan putar N = 950 rpm untuk penstock 6, 8, 10 inci masing-masing adalah 6,163 m/s, 5,933 m/s, dan 3,719 m/s. Dengan ini menunjukan bahwa penstock 6 inci adalah yang paling tepat digunakan untuk turbin hydrocoil dengan nilai kecepatan aliran dan efisiensi tertinggi, dan dapat dibuktikan juga bahwa kinerja turbin hydrocoil terbaik adalah berdasarkan semakin besar nilai kecepatan alirannya. Kata Kunci: Turbin Hydrocoil, Pipa Penstock, Computational Fluid Dynamics (CFD), Diameter Penstock

Item Type: Thesis (S1)
Call Number CD: FT/MSN. 23 010
NIM/NIDN Creators: 41318010016
Uncontrolled Keywords: Turbin Hydrocoil, Pipa Penstock, Computational Fluid Dynamics (CFD), Diameter Penstock
Subjects: 100 Philosophy and Psychology/Filsafat dan Psikologi > 150 Psychology/Psikologi > 154 Subconscious and Altered States and Process/Psikologi Bawah Sadar > 154.6 Sleep Phenomena/Fenomena Tidur > 154.63 Dreams/Mimpi > 154.634 Analysis/Analisis
500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 510 Mathematics/Matematika > 518 Numerical Analysis/Analisis Numerik, Analisa Numerik
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan
600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin
Divisions: Fakultas Teknik > Teknik Mesin
Depositing User: ADELINA HASNA SETIAWATI
Date Deposited: 29 Mar 2023 08:04
Last Modified: 29 Mar 2023 08:04
URI: http://repository.mercubuana.ac.id/id/eprint/75679

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