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All Journal Jurnal Rekayasa Mesin Jurnal Surya Teknika
Oktavitasari, Dini
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Studi Eksperimen Pengaruh Jumlah Sudu Terhadap Kinerja Wind Turbine Crossflow Fahrudin, Fahrudin; Wahyuni, Fitri; Oktavitasari, Dini
Jurnal Rekayasa Mesin Vol 16, No 2 (2021): Volume 16, Nomor 2, Agustus 2021
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v16i2.2555

Abstract

Wind is an alternative energy that is environmentally friendly and sustainable. Therefore, we need a type of wind turbine that can receive wind from all directions. The crossflow type vertical axis wind turbine has a high torque coefficient at a low tip speed ratio. The purpose of this study was to determine the effect of the number of blades on the performance of the vertical axis crossflow wind turbine. The experimental test was carried out by varying the number of blades. The configuration is analyzed using the experimental wind tunnel test scheme which has been modified in the section test section. The results showed that the number of blades 16 has a power coefficient ( ) = 0.23 tip speed ratio (TSR) = 0.42 at a wind speed of 4 m / s.
Kajian Hubungan Debit Aliran, Head Loss dan Efisiensi dalam Menentukan Kinerja Pompa Sentrifugal Indriyani , Indriyani; Oktavitasari, Dini; Meidasari, Memey
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11535

Abstract

This research analyzes the relationship between flow velocity, head loss, and pump performance in a piping system. The performance parameters evaluated include total head, hydraulic power, and system efficiency. The research using descriptive quantitative approach through the analysis of measurement data and graphical visualization of several parameters. The results showed that head loss increases as the water flow velocity increases. A significant increase in discharge causes greater energy losses within the pipeline, which leads to a decrease in pump efficiency. Based on the evaluation results, pump 4 showed the best performance, the highest efficiency at 65.51%. Meanwhile, pump 2 showed the lowest efficiency at 34.40%. The findings indicate that there is a trade-off between increasing head loss and pump efficiency, whereas higher head loss results in lower pump efficiency. Therefore, determining the optimal operating point is essential to achieve an efficient system.
Co-Authors Fahrudin Fahrudin Fitri Wahyuni Indriyani , Indriyani Meidasari, Memey