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Djaman .
Jurusan Teknik Mesin Politeknik Negeri Ambon
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RANCANG BANGUN DAN DESAIN PROTOTYPE PEMBANGKIT LISTRIK TENAGA BAYU MODEL SAVONIOUS Muhammad Hasan Basri; Djaman .
JURNAL SIMETRIK Vol 9, No 2 (2019)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.16 KB) | DOI: 10.31959/js.v9i2.411

Abstract

Angin adalah energy yang mudah ditemukan dalam keseharian dan juga merupakan energi yang tidak akan pernah habis. Pemanfaatan energy angin menjadi energy yang tepat guna salah satunya adalah dengan menggunakan turbin angin sebagai media untuk menghasilkan energy  Listrik. Dalam penelitian ini  type kincir yang digunakan adalah Type vertical Savinious Tujuan penelitian ini untuk mengetahui besarnya energi listrik yang dihasilkan oleh seperangkat pembangkit listrik tenaga angin dengan kincir tipe Vertikal Savoniuos. Dalam penelitian ini metode yang digunakan adalah metode eksperimen.  Hasil penelitian menunjukkan kincir angin mampu menggerakan motor listrik sehingga dengan gerakan putaran ini dapat mengkonversi energy mekanik menjadi energy Listrik. Untuk itu dalam perancangan ini dikembangkan prototype dengan melakukan perancangan kincir angin savonious untuk membangkitkan tenaga listrik menggunakan generator DC yang menghasilkan energi listrik dengan memanfaatkan kecepatan angin yang relatif rendah.Perancangan ini menghasilkan  listrik dengan menggunakan kincir angin savonious 3 sirip. Dan hasil pengujian pada kecepatan 2.6 m/s di ambil rata-rata menghsilkan tegangan listrik sebesar 0,3004 V dengan arus sebesar 0,0198 mA dan daya sebesar 0,089 Watt, untuk kecepatan 3.3 m/s diambil rata-rata  menghasilkan tegangan listrik sebesar 0,370 V dan 0,024  mA dengan daya 0,137 Watt , dan pada kecepatan  3.7 m/s diperoleh rata-rata tegangan sebesar 0,421 V dan 0,022 mA dengan daya sebesar 0,140 Watt.
Studi Eksperimental Pengaruh Jumlah Katup Buang Terhadap Kinerja Pompa Hidram Djaman; Berthy Pelasula; Victor D Waas; Ari Permana L
Journal Mechanical Engineering Vol. 4 No. 1 (2026): APRIL
Publisher : Department of Mechanical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v4i1.4030

Abstract

A hydraulic ram pump is a water pumping device that utilizes the potential energy of flowing water through the water hammer phenomenon without requiring external energy sources such as electricity or fuel. This technology has considerable potential as a sustainable and cost-effective solution for water supply in rural and remote areas with limited access to electrical power. The performance of a hydraulic ram pump is influenced by several design and operating parameters, one of which is the configuration of the waste valve. However, studies investigating the effect of the number of waste valves on hydraulic ram pump performance remain limited. Therefore, this study aimed to investigate the effect of varying the number of waste valves on the water discharge and efficiency of a hydraulic ram pump. An experimental method was employed using three waste valve configurations, namely one, two, and three waste valves. The observed parameters included waste valve discharge, delivery discharge, total inlet discharge, and pump efficiency, which was calculated using the D'Aubuisson efficiency method. The results indicated that increasing the number of waste valves enhanced the hydraulic ram pump discharge. The average waste valve discharge increased from 17.75 L/s to 29.43 L/s and 46.27 L/s, while the average delivery discharge increased from 1.05 L/s to 2.10 L/s and 3.10 L/s. Similarly, the total inlet discharge increased from 18.80 L/s to 31.53 L/s and 49.37 L/s. The calculated efficiencies were 69.81% for the single waste valve configuration, 83.26% for the two-waste-valve configuration, and 78.49% for the three-waste-valve configuration. The decrease in efficiency observed with three waste valves indicates that increasing the number of waste valves does not necessarily improve pump performance due to higher energy losses during the water hammer generation process. Therefore, under the experimental conditions of this study, the two-waste-valve configuration provided the optimum performance by achieving the highest efficiency while maintaining a relatively high delivery discharge. Keywords: hydraulic ram pump, waste valve, number of waste valves, water discharge, D'Aubuisson efficiency, water hammer.
Co-Authors Ari Permana L Berthy Pelasula Muhammad Hasan Basri Victor D Waas