An Analysis on Performance of Pico-hydro with Archimedes Screw Model Viewed from Turbine Shaft Angle

Eswanto, E.; Hasan, Hanapi; Razlan, Z. M.

doi:10.5829/ije.2023.36.01a.02

Cited by 3 publications

(5 citation statements)

References 28 publications

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“…Dalam rangka meningkatkan efisiensi turbin hidrokinetik pada kondisi yaw, perlu dilakukan evaluasi yang mendalam terhadap selubung diffuser yang digunakan pada turbin hidrokinetik. Evaluasi tersebut harus memperhatikan faktor-faktor seperti kecepatan aliran air, ukuran turbin, dan sudut yaw yang dihadapi oleh turbin hidrokinetik [12,15]. Dengan demikian, penggunaan selubung pada turbin hidrokinetik diharapkan dapat meningkatkan efisiensi dan kinerja turbin hidrokinetik pada kondisi operasi yang berbeda.…”

Section: Pendahuluanunclassified

“…Nilai koefisien korelasi berkisar dari -1 hingga 1. Nilai -1 menunjukkan korelasi negatif yang kuat antara kedua variabel, nilai 0 menunjukkan tidak ada korelasi, dan nilai 1 menunjukkan korelasi positif yang kuat [15]. Dimana TSR (Tip Speed Ratio) adalah rasio antara kecepatan ujung baling-baling (tip speed) dan kecepatan aliran fluida yang menggerakkannya, R adalah jari-jari dari baling-baling, ω adalah kecepatan sudut dari baling-baling dalam rad/s, dan V adalah kecepatan fluida yang mengalir melalui baling-baling.…”

Section: Metode Penelitianunclassified

“…Korelasi Pearson adalah metode statistik yang digunakan untuk mengukur sejauh mana hubungan linier antara dua variabel. korelasi Pearson membantu memahami perubahan dalam satu variabel, seperti berbanding lurus atau berbanding terbalik dengan perubahan dalam variabel lainnya, serta sejauh mana kekuatan hubungan tersebut [15]. Dengan memahami hubungan antara variabel-variabel yang mempengaruhi kinerja turbin hidrokinetik,maka dapat dilakukan identifikasi faktor-faktor yang paling berpengaruh dalam mencapai efisiensi optimal.…”

Section: B Analisis Dataunclassified

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Analisis Kinerja Turbin Hidrokinetik Dengan Selubung Diffuser Pada Kondisi Yaw Misalignment Berdasarkan Variasi Kecepatan Aliran Air

2023

RMME

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Yaw Misalignment condition has detrimental effects on the performance and efficiency of hydrokinetic turbines. This phenomenon occurs when the direction of water flow hitting the turbine blades is not aligned with the turbine's movement direction. In this research, an analysis is conducted on the performance of a hydrokinetic turbine equipped with a diffuser shroud under Yaw Misalignment conditions, considering variations in water flow velocity. The dataset used in this study consists of water flow velocity data, yaw angles, tip speed ratio (TSR), and power coefficient (Cp) of a 19.8 cm diameter horizontal-axis hydrokinetic turbine operating under Yaw Misalignment conditions. Experiments were conducted at three water flow velocity levels: 0.7 m/s, 0.9 m/s, and 1.1 m/s. Additionally, yaw angle variations were applied ranging from 0° to 25° at 5° intervals. Data analysis involved the application of Pearson correlation analysis and descriptive statistical analysis to identify the maximum Cp values. The analysis results indicate that the highest maximum Cp value is 0.711, with a tip speed ratio (TSR) of 4.33, achieved at a yaw angle of 0° and a water flow velocity of 0.9 m/s. This indicates that under these conditions, the turbine reaches its peak performance in converting water flow energy into mechanical power.

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Section: Pendahuluanunclassified

Section: Metode Penelitianunclassified

Section: B Analisis Dataunclassified

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Analisis Kinerja Turbin Hidrokinetik Dengan Selubung Diffuser Pada Kondisi Yaw Misalignment Berdasarkan Variasi Kecepatan Aliran Air

2023

RMME

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“…The steel trough type screw turbine is a type of turbine that has an open blade or blade, so that the water flowing into the turbine blade is only as wide as the bucket [14][15][16]. Whereas in the other part, the closed compact installation type screw turbine is a type of turbine that has all installations tightly closed [17][18][19]. In this type of turbine it is possible to ensure that the water flowing to the turbine blades meets the part covering the turbine installation [20].…”

Section: Introductionmentioning

confidence: 99%

Determining the Right Nozzle Diameter Size and Their Effect on the Performance of Picohydro Technology

Eswanto

Hasan²,

Nurdiana³

2023

ARFMTS

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New energy and renewable energy are solutions that can be applied to meet energy needs, especially those that are environmentally friendly. Currently, people, especially those living around energy sources such as rivers and irrigation, can independently create renewable power systems to produce energy. The application of picohydro power generation technology is the best solution in the application of environmentally friendly, independent, and renewable technologies. The purpose of this study was to determine the best performance of the nozzle output diameter of 3", 4", and 5" on picohydro technology using an Archimedes screw turbine. The research method was carried out by means of a prototype experiment using continuously circulated water fluid. The data collection process starts from the water discharge from the flowmeter, the rotation of the turbine blade, the rotation of the transmission, the rotation of the alternator, the pressure in the pressure gauge, and the power generated. The research results obtained information that at the smallest diameter (3") the nozzle pressure to the screw tip is not optimal because the water released by the nozzle only hits part of the screw leaf side, so that the performance is not optimal where the turbine shaft rotation at a maximum discharge of 30 m3/h is obtained at 230 rpm, while if the diameter of the output nozzle is given (5"), a lot of water is sprayed by the nozzle and it fills the screw leaves, which causes water to also overflow onto the screw in front of it, so that the flow does not normally flow from each screw, and it is also possible that the size of the input screw is not proportional to the output screw turbine, where the maximum rotation at a discharge of 30 m3/h is obtained at 247 rpm. For the size (4") it looks higher when viewed from the data obtained, this condition looks ideal in the size ratio between the input and output nozzles so that the resulting flow is also right to drive the turbine screw. The shaft rotation results obtained are 269 rpm for a water discharge of 30 m3/h.

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“…In order to improve the performance of this technology, several investigations have been carried out in the literature. In the work of Yulistiyanto et al [20], Maulana et al [13], Alkistis et al [19], Maulana et al [15], Abdul et al [9], Khan et al [21], Betancour et al [22], Abdillah et al [23], Imawati et al [24], Eswanto et al [25], Erinofiardi et al [26] the authors studied the influence of the geometric and hydraulic parameters of the Archimedes screw, namely the angle of inclination of the shaft, the number of blades, the variations in flow, the slope of the shaft , the direction of the axis of rotation, the speed of rotation, its angle of slope, the diameter ratio between the inner and outer diameters, the length of the axis and the pitch on the power and efficiency of the screw. According to the work of Warjito et al [6], the authors believe that the Archimedes turbine has no fixed design theory.…”

Section: Introductionmentioning

confidence: 99%

Generation of Electricity From a Hydraulic Turbine in the Djonou River (Benin)

ADJASSA,

KOTO N'GOBI,

DONNOU

et al. 2023

J. Nig. Soc. Phys. Sci.

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The shortage of electricity in rural areas despite the hydraulic potential they possess is becoming a challenge for Benin. To date, nearly 140,000 people spread over the 42 lakeside villages of this country live in energy inaccessibility, insecurity and poverty. To overcome this situation, the present study is therefore interested in the production of electrical energy on an experimental basis in low water periods thanks to an Archimedean screw turbine which operates at low flow rates and height of fall on the river. Djonou located in southern Benin a few kilometers from the University of Abomey-Calavi. The geometrical and hydraulic parameters of the screw were therefore determined and the device was modeled using Autocard software. A prototype was then made with local recycled materials and tested on the river. The screw specifications indicate an inside and outside radius of 0.072 m and 0.135 m. The length of the screw was set at 0.46 m for a blade radius estimated at 0.137 m. The number of screw blades is equal to 2 with a flow rate of 0.049 $ m^{3}/s $. The inclination angle of the screw is $25^{\circ}$. The device on the experimental site produces a voltage of 16 V and provides a current of about 0.12 A which can power a 2 W lamp. This performance of the prototype made on a small scale is a reliable indicator of the optimal use of this technology in the national hydraulic network of Benin to supply populations with electrical energy.

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An Analysis on Performance of Pico-hydro with Archimedes Screw Model Viewed from Turbine Shaft Angle

Cited by 3 publications

References 28 publications

Analisis Kinerja Turbin Hidrokinetik Dengan Selubung Diffuser Pada Kondisi Yaw Misalignment Berdasarkan Variasi Kecepatan Aliran Air

Analisis Kinerja Turbin Hidrokinetik Dengan Selubung Diffuser Pada Kondisi Yaw Misalignment Berdasarkan Variasi Kecepatan Aliran Air

Determining the Right Nozzle Diameter Size and Their Effect on the Performance of Picohydro Technology

Generation of Electricity From a Hydraulic Turbine in the Djonou River (Benin)

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