Performance of Undershot Water Wheel with Bowl-shaped Blades Model

Sule, Luther; Mochtar, Andi Amijoyo; Sutresman, Onny Suryono

doi:10.14716/ijtech.v11i2.2465

Cited by 15 publications

(3 citation statements)

References 10 publications

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“…Even though the development and application of this technology have taken decades, determining the appropriate number of blades is still based on assumptions (Jamlay et al, 2016;. Similar research that has been carried out, namely the performance of the undershot waterwheel with bowlshaped blades shows that the bowl-shaped blade waterwheel is suitable as an alternative to small-scale power plants (Permanasari et al, 2019;Quaranta & Revelli, 2018;Sule et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The performances of undershot waterwheel with butterfly-shaped blades and the radius of grasshopper's elbow: The utilization efforts for river electrical energy potential

et al. 2022

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Based on the amount of discharge or current, the river flows in Central Kalimantan have the potential to produce electrical energy. The purposes of this study were to design an undershot type of floating waterwheel and to test the effective bending angle at the radius of the grasshopper elbow in producing the most optimum power. This research uses experimental methods. The tools used are: mobile phone, multimeter, the gate of light, timer counter, flow rate, and the dimensions of the waterwheel diameter is 6 meters. Grasshopper angles vary from 0°, 30°, 45°, 60o, and 90° with a submerged blade depth of 0.24 m. The results showed that the undershot waterwheel with a flexible pinwheel (like a grasshopper's elbow) produced a faster and more effective rotation than a wheel with a fixed pinwheel and blades. Because the waterwheel has a flexible pinwheel and the butterfly blades experience little resistance when moving in water, the wheel generates more electrical energy than a wheel with fixed pinwheels and blades.At the angle of bending of the radius of the grasshopper blade 30º with the butterfly blade, it produces more optimal electrical energy than angles 0°, 45°, 60o, and 90°. Suggestions for further research are to test the waterwheel in weak and medium current rivers

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Section: Introductionmentioning

confidence: 99%

The performances of undershot waterwheel with butterfly-shaped blades and the radius of grasshopper's elbow: The utilization efforts for river electrical energy potential

et al. 2022

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“…Hydropower is a promising and environmentally friendly renewable energy source, offering a sustainable alternative to traditional fossil fuel and nuclear power plants [1][2][3]. One innovative method of converting water into energy is hydrokinetic energy technologies, most notably the installation of hydrokinetic turbines [4,5].…”

Section: Introductionmentioning

confidence: 99%

Enhancing savonius rotor model with additional grooves on hydrokinetic turbine performance

Sampelawang,

Salam,

Sule

et al. 2024

EEJET

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Hydrokinetic turbines use different rotors for technological and economic reasons. Even though it performs poorly, vertical-axis hydrokinetic turbines use the Savonius rotor. The object of research is a Savonius rotor model with additional grooves. The study addresses the need to improve the efficiency and overall performance of Savonius rotor models in hydrokinetic turbines, which are widely used for harnessing energy from flowing water currents. The problem involves understanding how different groove configurations affect the aerodynamic behavior and energy extraction efficiency of the Savonius rotor in hydrokinetic turbine applications. The test results revealed that incorporating grooves led to notable improvements in efficiency (ɳ) and coefficient of drag (CD). Grooved blades exhibited a maximum efficiency of 30.97 % and a maximum drag coefficient of 2.71. Notably, blades with a groove width of 12.5 mm emerged as the optimal model, demonstrating an efficiency peak of 35.66 % and a drag coefficient 3.08. This indicates a substantial increase in efficiency by 4.69 % and a corresponding rise in the drag coefficient by 0.37 for grooved blades. The grooves on grooved blades increase friction, improving performance. Grooved rotor blades improve turbine performance significantly. Savonius rotor models in hydrokinetic turbines extract more energy by optimizing groove width and arrangement to maximize drag coefficient and efficiency. This research affects hydrokinetic turbine design and optimization for renewable energy generation. Engineers and designers can improve the performance and efficiency of the Savonius rotor model in hydrokinetic turbine applications by applying this study’s findings

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“…The world's demand for renewable energy is increasing every year [1]. It cannot be avoided that earth will run out of natural resources.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Aqueous Carboxymethyl Cellulose/Uncaria Gambir Extract as Novel Anti-Corrosion Water-Based Lubricant

Rahmadiawan¹,

Fuadi²,

Kurniawan³

et al. 2022

Tribol. Ind.

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In this work, a novel anti-corrosion water-based lubricant is prepared. Carboxymethyl cellulose and Uncaria Gambir Extract, all in powder form, were dispersed in water. Corrosion, stability, and tribology test with pin-on-disk reciprocating tribometer were studied. The newly obtained lubricants were designated as Uncaria Gambir (UG), i. e. UG0 (0% volume Uncaria Gambir extract in Carboxymethyl cellulose, UG1 (1% volume Uncaria Gambir extract in Carboxymethyl cellulose, and UG2 (2% volume Uncaria Gambir extract in Carboxymethyl cellulose). The addition of Uncaria Gambir Extract into Carboxymethyl cellulose solution delivered good stability, low corrosion rate, and stable friction coefficient. UG1 has the best stability (no sedimentation), corrosion, and tribological performance. After a one-hour friction test, UG2showed the best performance in terms of CoF, indicated by a 7.6% CoF reduction, compared to UG0. This finding indicates the potential of Uncaria Gambir Extract as an additive for an anticorrosive water-based lubricant for machining application.

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Performance of Undershot Water Wheel with Bowl-shaped Blades Model

Cited by 15 publications

References 10 publications

The performances of undershot waterwheel with butterfly-shaped blades and the radius of grasshopper's elbow: The utilization efforts for river electrical energy potential

The performances of undershot waterwheel with butterfly-shaped blades and the radius of grasshopper's elbow: The utilization efforts for river electrical energy potential

Enhancing savonius rotor model with additional grooves on hydrokinetic turbine performance

Tribological Properties of Aqueous Carboxymethyl Cellulose/Uncaria Gambir Extract as Novel Anti-Corrosion Water-Based Lubricant

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