scholarly journals Perancangan Pembangkit Listrik Pikohydro Dengan Tipe Turbin Screw

2021 ◽  
Vol 14 (2) ◽  
pp. 99-105
Author(s):  
Ma'mun Abdul Karim ◽  
Jojo Sumarjo ◽  
Najmudin Fauji
Keyword(s):  
Output Power ◽  
Turbine Blades ◽  
Electrical Energy ◽  
Small Scale ◽  
Irrigation Flow ◽  
Water Turbine ◽  
Local Residents ◽  
Turbine Shaft ◽  
Type Water ◽  
Head Height

The screw type water turbine is one type of water turbine that has the potential to generate electricity on a small scale that is environmentally friendly, where this screw type water turbine is very suitable for rivers and irrigation flows in the territory of Indonesia because the use or operation of this turbine only requires low turbine head, looking at the potential for irrigation river water flow with a discharge range of 0.01-0.1 m3/s located in the lowlands in a Karawang district, it is possible to install or apply this screw type water turbine. In this study aims to be able to utilize the source of irrigation flow so that it can be converted into a source of electrical energy that can be utilized by local residents and for lighting on roads that are still poorly lit. In the process of designing a screw type water turbine, mechanical calculations are carried out to determine thedimensions of the turbine blades, turbine shaft, transmission systems such as pulleys and belts, as well as the power that can be generated by the turbine, with a relative head between 0.5 meters, 0.75 meters, and 0.9 meters and determine the correct components. The results of this calculation are obtained in the form of output power from each different head height for head 0.5, the power obtained is 220.89795 watts, for the 0.75 m head, the power is 394.29519 watts, and for the height 0.9, the output power is 356.13926 watts, the results of the design will then be made and will be realized.

scholarly journals Turbin Screw Untuk Pembangkit Listrik Skala Mikrohidro Ramah Lingkungan

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
Encu Saefudin ◽  
Tarsisius Kristyadi ◽  
Muhammad Rifki ◽  
Syaiful Arifin
Keyword(s):  
Power Plants ◽  
Performance Test ◽  
Turbine Blades ◽  
Small Scale ◽  
Power Turbine ◽  
Water Turbine ◽  
Low Head ◽  
Technical Specifications ◽  
Turbine Shaft ◽  
Design Power

ABSTRACTType screw water turbine is a type of water turbine which has the potential for small scale power plants, where water turbine screw type is suitable for rivers in parts of Indonesia because the operation of the turbine require only a low head turbine. With the potential of irrigation water streams at the rate of 0.3302 m3/s in Banjaran village allows the installation of the turbines type screw. In the process of designing a water turbine type screw to be optimized turbine screw to determine the value of the ratio d/D, and then calculating mechanically to determine the dimensions of the turbine blades, the turbine shaft, the transmission system (gears, pulleys and belt) as well as the power that can be produced by the turbines, by using a head of 1.05 meters. The results of this research are the technical specifications of the turbine screw with the design power of 2678.35 Watt. Performance test of the turbine was carried out in Nagrak village of Ciherang irrigation canals on Cangkuang Banjaran sub district. With variable discharge, measuring the speed of rotation of the shaft generator, the voltage and current that is produced as well as the efficiency of the turbine. From the results of testing gained 17.82 % efficiency, power turbine 531.84 Watts at discharge 0,277 m3/s.Keywords: Turbine, Head, Microhydro, OptimazedABSTRAKTurbin air tipe ulir adalah salah satu tipe turbin air yang berpotensi untuk pembangkit listrik skala kecil yang ramah lingkungan, dimana turbin air tipe ulir sangat cocok untuk sungai-sungai di wilayah Indonesia karena pengoperasian turbin ini hanya memerlukan head turbin yang rendah. Melihat potensi air aliran sungai irigasi dengan debit 0,3302 m3/s yang berada di Desa Banjaran memungkinkan pemasangan turbin tipe ulir. Pada proses perancangan turbin air tipe ulir dilakukan optimasi turbin screw dengan menentukan nilai perbandingan d/D, lalu melakukan perhitungan mekanikal untuk menentukan dimensi dari sudu turbin, poros turbin, sistem transmisi (roda gigi, puli dan belt) juga daya yang mampu dihasilkan turbin, dengan head 1,05 meter. Hasil dari penelitian ini berupa spesifikasi teknis turbin ulir dengan daya hasil rancangan sebesar 2678,35 Watt dan gambar 2 dimensi serta 3 dimensi turbin ulir hasil rancangan. Hasil perancangan kemudian direalisasikan. Untuk mengetahui kinerja turbin dilakukan pengujian yang dilaksanakan di saluran Irigasi Ciherang Desa Nagrak Kecamatan Cangkuang Banjaran. Dengan variabel ukur yaitu debit, kecepatan putaran poros generator, voltase dan arus yang dihasilkan serta efisiensi turbin. Dari hasil pengujian didapat efisiensi 17.82 %, Daya turbin 531.84 Watt pada debit 0,277 m3/s.Kata kunci: Turbin, Head, Mikrohidro, Optimasi

Improvement of Torque Performance of a Vertical Axis Type Marine Turbine for a Water Current Generation System

2010 ◽  
Author(s):  
Tomoki Ikoma ◽  
Shintaro Fujio ◽  
Koichi Masuda ◽  
Chang-Kyu Rheem ◽  
Hisaaki Maeda
Keyword(s):  
Turbine Blades ◽  
Angle Of Attack ◽  
Cross Flow ◽  
Vertical Axis ◽  
Hydrodynamic Forces ◽  
Water Current ◽  
Current Channel ◽  
Marine Current ◽  
Water Turbine ◽  
Type Water

This paper describes the possibility of an improvement of torque performance and hydrodynamic forces on a vertical axis type water turbine, used for marine current generating system. The water turbine analyzed here is based on a Darrieus turbine with vertical blades. We considered possibilities of controlling the angle of attack of blades in order to improve the starting performance and to reduce energy loss during the rotation of the turbine. We used blade-element/ momentum theory in order to investigate the variations appearing in torque performance when the angle of attack were controlled. We also proved the validity of our predictions of hydrodynamic forces on the blade and the turbine, made through CFD calculation, by comparing them with the results of corresponding model tests in a current channel. In the corresponding model test we investigated not only the hydrodynamic forces on the turbine with three fixed blades, but also the inline force and the cross-flow force on the rotating turbine with three blades. Regarding the cyclic pitching of turbine blades, results suggest that significant increase in average turbine torque is possible.

scholarly journals The PICOHIDRO POWER ELECTRIC PLANT DESIGN IS EQUIPPED BY ELECTRONIC CONTROL SYSTEM (ECU)

2021 ◽  
Vol 2 (Oktober) ◽  
pp. 77-85
Author(s):  
Budi Prasetyo ◽  
Dedy Pradigdo ◽  
Indra Diantoro
Keyword(s):  
Control System ◽  
Alternative Energy ◽  
Electrical Energy ◽  
Water Source ◽  
Francis Turbine ◽  
Source Control ◽  
Plant Design ◽  
Daily Lives ◽  
Water Turbine ◽  
Type Water

Abstrak: There are many streams of water or rivers around us which are felt to be underutilized effectively. Therefore, it is necessary to develop Pico hydro technology as an alternative to power generation. Pico hydro usually produces low wattage so that it is not optimal for people to use in their daily lives. Therefore, the design of a power plant is designed that is equipped with an ECU control system as a water source control system that can produce greater electrical energy. The research method used is a pure experimental method to find out the results obtained are 300 watts by calculating the pressure sent to the ECU system. Technically, Pico hydro has several components in it, such as waterwheel water as a turbine, steering blade and generator. Pico hydro can be used as an alternative energy that utilizes the flow of water which can be used as an energy source. The Pico hydro generator used in this study is the Brantas River in Pendem Village, Karangploso District, Batu Malang City. With adequate water flow, using a Francis type water turbine, and using a 200Watt generator and controlled by the ECU system. From the test results obtained potential energy of 5880 (Nm), compressive energy of 2.107 (N/m2) pipe flow velocity (v) 7.668 (m/s) energy contained in water 45.67 (watts) Francis turbine efficiency 31.97% generator efficiency is 28.77% and the maximum power produced by a 200 watt generator is 29Volt

scholarly journals Experimental investigation of Archimedes Screw Hydro Turbine rotation with and without deflector

2021 ◽  
Vol 926 (1) ◽  
pp. 012013
Author(s):  
Y Setiawan ◽  
E S Wijianti ◽  
B S Wibowo ◽  
S Saparin ◽  
P Prayitnoadi
Keyword(s):  
Electrical Energy ◽  
Small Scale ◽  
Outer Diameter ◽  
Hydro Turbine ◽  
Turbine Performance ◽  
Screw Length ◽  
Water Turbine ◽  
Low Head ◽  
Pitch Distance ◽  
Hydro Turbines

Abstract The Archimedes screw water turbine (AST) is a device that works mechanically to produce electrical energy with an energy source that comes from the flow of water. Archimedes screw hydro turbines operate at low head and flow rates and can generate electricity at micro levels. This type of turbine is very suitable for use in small waters such as irrigation and rivers. The research was conducted by building a prototype of a small-scale Archimedes screw hydro turbine with and without deflector. The purpose of this research is to compare the rotation produced by the two turbines and whether the installation of a deflector can improve turbine performance. The turbine is constructed with a screw length of 1 m, outer diameter is 30 cm, the number of blades 15, and each has a pitch distance is 13 cm. Turbine angle variations are 30°, 35°, and 40°. The results showed that the best rotor rotation was produced by the screw without deflector at an angle of 30°. This shows that the addition of a deflector reduces the resulting screw rotation.

scholarly journals Study on an Undershot Cross-Flow Water Turbine with Straight Blades

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yasuyuki Nishi ◽  
Terumi Inagaki ◽  
Yanrong Li ◽  
Kentaro Hatano
Keyword(s):  
Flow Field ◽  
Output Power ◽  
Cross Flow ◽  
Open Channels ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Turbine Efficiency ◽  
Water Turbine ◽  
Low Head ◽  
Hydroelectric Power Generation

Small-scale hydroelectric power generation has recently attracted considerable attention. The authors previously proposed an undershot cross-flow water turbine with a very low head suitable for application to open channels. The water turbine was of a cross-flow type and could be used in open channels with the undershot method, remarkably simplifying its design by eliminating guide vanes and the casing. The water turbine was fitted with curved blades (such as the runners of a typical cross-flow water turbine) installed in tube channels. However, there was ambiguity as to how the blades’ shape influenced the turbine’s performance and flow field. To resolve this issue, the present study applies straight blades to an undershot cross-flow water turbine and examines the performance and flow field via experiments and numerical analyses. Results reveal that the output power and the turbine efficiency of the Straight Blades runner were greater than those of the Curved Blades runner regardless of the rotational speed. Compared with the Curved Blades runner, the output power and the turbine efficiency of the Straight Blades runner were improved by about 31.7% and about 67.1%, respectively.

scholarly journals Simulation of Glass Fiber Reinforced Polypropylene Nanocomposites for Small Wind Turbine Blades

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 622
Author(s):  
Yasser Elhenawy ◽  
Yasser Fouad ◽  
Haykel Marouani ◽  
Mohamed Bassyouni
Keyword(s):  
Wind Turbine ◽  
Glass Fiber ◽  
Turbine Blades ◽  
Small Scale ◽  
Fiber Reinforced ◽  
Wind Turbine Blades ◽  
Element Analysis ◽  
Glass Fiber Reinforced ◽  
Horizontal Axis Wind Turbines ◽  
Multi Walled Carbon Nanotubes

This study aims to evaluate the effect of functionalized multi-walled carbon nanotubes (MWCNTs) on the performance of glass fiber (GF)-reinforced polypropylene (PP) for wind turbine blades. Support for theoretical blade movement of horizontal axis wind turbines (HAWTs), simulation, and analysis were performed with the Ansys computer package to gain insight into the durability of polypropylene-chopped E-glass for application in turbine blades under aerodynamic, gravitational, and centrifugal loads. Typically, polymer nanocomposites are used for small-scale wind turbine systems, such as for residential applications. Mechanical and physical properties of material composites including tensile and melt flow indices were determined. Surface morphology of polypropylene-chopped E-glass fiber and functionalized MWCNTs nanocomposites showed good distribution of dispersed phase. The effect of fiber loading on the mechanical properties of the PP nanocomposites was investigated in order to obtain the optimum composite composition and processing conditions for manufacturing wind turbine blades. The results show that adding MWCNTs to glass fiber-reinforced PP composites has a substantial influence on deflection reduction and adding them to chopped-polypropylene E-glass has a significant effect on reducing the bias estimated by finite element analysis.

Performance study of twisted Darrieus hydrokinetic turbine with novel blade design

2021 ◽  
pp. 1-37
Author(s):  
Mabrouk Mosbahi ◽  
Mouna Derbel ◽  
Mariem Lajnef ◽  
Bouzid Mosbahi ◽  
Zied Driss ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Maximum Power ◽  
Power Coefficient ◽  
Speed Ratio ◽  
Small Scale ◽  
Performance Study ◽  
Hydrokinetic Turbine ◽  
Blade Shape ◽  
Water Turbine ◽  
Water Canals

Abstract Twisted Darrieus water turbine is receiving growing attentiveness for small-scale hydropower generation. Accordingly, the need for raised water energy conversion incentivizes researchers to focalise on the blade shape optimization of twisted Darrieus turbine. In view of this, an experimental analysis has been performed to appraise the efficiency of a spiral Darrieus water rotor in the present work. To better the performance parameters of the studied water rotor with twisted blades, three novel blade shapes, namely U-shaped blade, V-shaped blade and W-shaped blade, have been numerically tested using a computational fluid dynamics three-dimensional numerical model. Maximum power coefficient of Darrieus rotor reaches 0.17 at 0.63 tip-speed ratio using twisted blades. Using V-shaped blades, maximum power coefficient has been risen up to 0.185. The current study could be practically applied to provide more effective employment of twisted Darrieus turbines and to improve the generated power from flowing water such as river streams, tidal currents, or other man made water canals.

Performance and Flow Field of Gravitation Vortex Type Water Turbine using Volute Tank

2021 ◽  
Vol 14 (3) ◽  
pp. 229-246
Author(s):  
Yasuyuki Nishi ◽  
Daichi Sukemori ◽  
Terumi Inagaki
Keyword(s):  
Flow Field ◽  
Water Turbine ◽  
Type Water

scholarly journals Design and Analysis of a Wind Turbine Blade with Dimples to Enhance the Efficiency through CFD with ANSYS R16.0

2018 ◽  
Vol 207 ◽  
pp. 02004
Author(s):  
M. Rajaram Narayanan ◽  
S. Nallusamy ◽  
M. Ragesh Sathiyan
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Turbine Blades ◽  
Electrical Energy ◽  
Optimum Combination ◽  
Surface Topology ◽  
Wind Turbine Blades ◽  
Lift And Drag

In the global scenario, wind turbines and their aerodynamics are always subjected to constant research for increasing their efficiency which converts the abundant wind energy into usable electrical energy. In this research, an attempt is made to increase the efficiency through the changes in surface topology of wind turbines through computational fluid dynamics. Dimples on the other hand are very efficient in reducing air drag as is it evident from the reduction of drag and increase in lift in golf balls. The predominant factors influencing the efficiency of the wind turbines are lift and drag which are to be maximized and minimized respectively. In this research, surface of turbine blades are integrated with dimples of various sizes and arrangements and are analyzed using computational fluid dynamics to obtain an optimum combination. The analysis result shows that there is an increase in power with about 15% increase in efficiency. Hence, integration of dimples on the surface of wind turbine blades has helped in increasing the overall efficiency of the wind turbine.

As-Built Geometry and Surface Finish Effects on Fatigue and Tensile Properties of Laser Fused Titanium 6Al-4V

2017 ◽  
Author(s):  
Onome Scott-Emuakpor ◽  
Tommy George ◽  
Emily Henry ◽  
Casey Holycross ◽  
Jeff Brown
Keyword(s):  
Tensile Properties ◽  
Surface Finish ◽  
Fatigue Behavior ◽  
Turbine Blades ◽  
Material Behavior ◽  
Small Scale ◽  
Internal Cooling ◽  
Roughness Effects ◽  
Form And Function ◽  
And Function

The as-built material behavior of additive manufactured (AM) Titanium (Ti) 6Al-4V is investigated in this study. A solution heat treated, aged, stress relieved, and hot isostatic pressed Laser Powder Bed Fusion (LPBF) AM process was used to manufacture the specimens of interest. The motivation behind this work is based on the ever-growing desire of aerospace system designers to use AM to fabricate components with novel geometries. Specifically, there is keen interest in AM components with complex internal cooling configurations such as turbine blades, nozzle vanes, and heat exchangers that can improve small scale propulsion performance. Though it is feasible to three-dimensionally print parts that meet the Fit portion of a part characteristic description and identification, the Form and Function portions have proven to be more difficult to conquer. This study addresses both the Form and Function characteristics of the LPBF AM process via the investigation of geometry variation and surface roughness effects pertaining to mechanical properties and fatigue behavior of Ti 6Al-4V. Results show that geometry variation may be the cause of increased vibration fatigue life uncertainty. Also, both fatigue and tensile properties show profound discrepancies associated with surface finish. As-built surface finish specimens have lower fatigue and ductility performance, but the results are more consistent than polished data.

Sign in / Sign up

Export Citation Format

Share Document