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Tugur Redationo , Nereus
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Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALYSIS OF PELTON WATER TURBINE DESIGN RESULTS THROUGH VALVE VARIATIONS AND COMPARISON OF NUMBER OF BLADES Andi Priyanto, Oktavianus; Tugur Redationo , Nereus; Crisanto Putra Mbulu, Bernardus
Mechanical, Energy and Material (METAL) Vol. 2 No. 2 (2024): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i2.101

Abstract

The Pelton turbine is an extension of the impulse turbine, the Pelton turbine operated with high pressure and changes in momentum received by the blades very large. In this research, the researcher wanted to analyze the effect of the number of blades against the momentum force that produces the turbine shaft rotation and generate electrical energy. The research used a mini Pelton type of water turbine, using blades with the number of blades 6, 12, and 18 blades. By using the valve opening ranging from 60o-720o, using an initial load of 150gr, arm length 15cm, then look for the unit conversion of discharge pressure (Pd), turbine head (HT), capacity water (Q), Water Horse Power (WHP), Brake Hourse Power (BHP), and efficiency turbine. The number of blades that are more effective for use in mini-type water turbines Pelton valve opening variations are 18 blades, because of the efficiency and force values greater momentum so that the rotation of the turbine shaft produces a blade 18 with the results of the calculation of the 18 blades obtained a manometer of 215.74 N/m2 turbine head 21.99 m, highest water capacity 0.012 m3/s, highest WHP 26,404 Watts, BHP the highest is 19,765 Watts, and the highest turbine efficiency is 75%.
COMPARISON OF TEMPERATURE VARIATIONS (60˚C, 80˚C, and 100˚C) ON MESH 30 AND 250 DRYING OF COFFEE WOOD CHARCOAL BRIQUETTE ON CALORIAL VALUE AND HARDNESS Sakerengan , Jamiko; Tugur Redationo , Nereus; Crisanto Putra Mbulu , Bernardus
Mechanical, Energy and Material (METAL) Vol. 3 No. 1 (2025): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v3i1.126

Abstract

The selection of coffee wood in this study is based on the fact that coffee wood is waste and has not been utilized optimally and the availability of coffee wood is large and easy to obtain in the East Java region. Coffee wood is a type of wood that is not in demand by many people because this wood is relatively small and not straight. To reduce waste, researchers made briquettes made from coffee wood using mesh 30 and 250 with variations in drying temperatures (60 °C, 80 ° C and 100 ° C). After that was carried out Calorimeter Bomb Testing, and hardness. The highest calorific value resulting from temperature variations of 60°C, 80°C, and 100°C mesh 30 and 250 drying coffee wood briquettes is mesh 30 temperature 100°C of 6972.23 cal/g, and mesh 250 temperature 100°C of 6763.19 cal/g. The effect of the ratio of temperature variations (60°C, 80°C and 100°C) mesh 30 and 250 Drying coffee wood briquettes is: Grain and adhesive size. The smaller the grain size on the briquettes, namely mesh 250, it produces a high hardness value of 60 °C of 26.6 HA, a temperature of 80 °C of 27.7 HA, and a temperature of 100 ° C of 27.4 HA, the larger the grain size in the briquette, namely mesh 30, the low hardness value of 60 ° C of 25.6 HA, temperature of 80 ° C of 26.4 HA, and a temperature of 100°C of 26.2 HA. The effect of the adhesive is that when drying the oven for 3 hours with temperature variations (60 ° C, 80 ° C and 100 ° C) makes the adhesive react so that the adhesive evaporates and coagulates which causes the hardness value to rise and fall.
Co-Authors Andi Priyanto, Oktavianus Crisanto Putra Mbulu , Bernardus Crisanto Putra Mbulu, Bernardus Sakerengan , Jamiko