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 INVESTIGATION PERFORMANCE OF PICO HYDRO WATER PIPE TURBINE

2021 ◽  
Vol 2 (3) ◽  
pp. 051-058
Author(s):  
Marwani Marwani ◽  
Muhammad Zahri Kadir ◽  
Ronny Egetha Putra
Keyword(s):  
Electrical Energy ◽  
Maximum Efficiency ◽  
Water Pipe ◽  
Small Power ◽  
Flow Discharge ◽  
Hydro Turbine ◽  
Turbine Performance ◽  
Water Turbines ◽  
Hydro Turbines ◽  
The Ideal

The flow of water in the pipeline for household needs is a source of energy that can generate electrical energy through Pico hydro turbines or small-power water turbines. The experiment has been conducted on a 10 Watt Pico hydro turbine mounted on a water pipe against changes in water flow discharge. The turbine performance analysis is conducted experimentally (actual) and theoretically (ideal). The analysis results showed the greater the discharge flow, the greater the power generated by the turbine. In tests with a maximum discharge of 8.9 l/min, the actual power of 1.121 Watts, the torque of 0.005 Nm with a rotation speed of 2146.8 rpm and efficiency of 12.59%; while the ideal power is based on Euler turbine equation of 4.2 Watts and torque of 0.016 Nm. So, the maximum turbine power that can be generated is only 26.67% ideal. Efficiency turbine decreases with increased discharge; in this test, the maximum efficiency was 24.89% at 5.8 L/min flow discharge.

scholarly journals Analysing Hydraulic Efficiency of Water Vortex Pico-Hydro Turbine using Numerical Method

2020 ◽  
Vol 77 (2) ◽  
pp. 91-101
Author(s):  
Ridho Irwansyah ◽  
Warjito ◽  
Budiarso ◽  
Christopher Clement Rusli ◽  
Sanjaya BS Nasution
Keyword(s):  
Internal Flow ◽  
Computational Method ◽  
Hydraulic Efficiency ◽  
Optimum Location ◽  
Optimum Ratio ◽  
Hydro Turbine ◽  
Turbine Efficiency ◽  
Turbine Performance ◽  
Low Head ◽  
Hydro Turbines

To overcome the lack of rural electricity in Indonesia vortex pico-hydro turbines are used as an option solution. This is due to the ability of the vortex turbine to work in low head conditions effectively. This study is conducted with comparison of curved and straight blade to obtain a more optimum turbine performance. Two methods are carried out in this study, analytical and computational method. Analytical methods are used to determine blade geometry and its performance while computational methods are used to analyse internal flow of turbine. As a result, the study concludes that hydraulic efficiency of vortex turbine in this study doesn’t affect much between straight and curved blades. The hydraulic efficiency for those blades is around 0.63. In addition, the study continued by analysing the optimum location of the blade in the basin. The results of the study show that the optimum ratio of depth and diameter of the blade is 0.33 with turbine efficiency is 0.84. Thus, the location of the blades is more important than the type of blades.

scholarly journals RANCANG BANGUN PROTOTYPE HYDRO TURBINE JENIS CROSS-FLOW UNTUK PERKOTAAN

POROS ◽  
2021 ◽  
Vol 17 (1) ◽  
pp. 43
Author(s):  
Andrianus Andrianus ◽  
Steven Darmawan ◽  
Abrar Riza
Keyword(s):  
Urban Areas ◽  
Fossil Fuel ◽  
Electric Energy ◽  
Cross Flow ◽  
Small Scale ◽  
Outer Diameter ◽  
Hydro Turbine ◽  
Good Shape ◽  
Water Turbine ◽  
The Right

The problem of fossil fuel crisis, both petroleum and coal, and the phenomenon of climatechange due to global warming, trigger the use of renewable energy that can overcome these problems.Cross-flow water turbine is one of the machine that can be used to produce small scale electric energy insmall scope. This turbine can be used in urban areas to assist industrial activities and their usefulness indaily life. The use of the right materials and strong construction can produce a good shape so that thiswater turbine is not only make efficient energy but also efficient and ergonomic in its use. This study isconducted theoretically to a cross-flow turbine which assumed to operate at 10m water height with 1.4L/s, outer diameter 150mm and 75mm thickness. The turbine consist of 15 blades with angle of attack ofthe blades is 30o. The results show that the turbine generate 119 Watt

Effect of Inlet Nozzle Shape on Performance of Darrieus-Type Hydro-Turbine Operated in Small Open Water Channel

2015 ◽  
Author(s):  
Kazuhiko Nakashima ◽  
Ryosuke Moriyama ◽  
Daisuke Matsusita ◽  
Satoshi Watanabe ◽  
Shin-ichi Tsuda ◽  
...  
Keyword(s):  
Open Channel ◽  
Constant Width ◽  
Water Channel ◽  
Open Water ◽  
Hydro Turbine ◽  
Turbine Performance ◽  
Straight Line ◽  
Low Head ◽  
Nozzle Shape ◽  
Converging Angle

A Darrieus-type hydro-turbine has been developed for the utilization of extra low head hydraulic energy. In the case of a ducted Darrieus-type hydro-turbine which consists of an intake, a runner, a casing and a draft tube, it has been found that the Darrieus runner with the narrow intake can generate larger torque without deterioration of efficiency than that with the parallel intake with the constant width. In this paper, the effect of the shape of the inlet nozzle on the performance of the Darrieus-type hydro-turbine operated in open channel flow is investigated both experimentally and numerically. Tested nozzles are two types of two-dimensional symmetric inlet nozzle, Half Diameter curved nozzle (HD nozzle) and Straight Line nozzle (SL nozzle). As a result, the Darrieus hydroturbine with SL nozzle generates larger power and yields higher efficiency than that with HD nozzle. In addition, the effects of nozzle converging angle and outlet width of SL nozzle on the turbine performance are investigated. As a result, it is found that the Darrieus hydroturbine with SL nozzle having large converging angle generates larger power with higher efficiency than that with the nozzle having small converging angle. And then, it is found that the generated power increases when SL nozzle with large outlet width is installed.

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

scholarly journals Studi Awal Pemanfaatan Turbin Screw pada Aliran Sungai Kecil di Kota Jambi

2020 ◽  
Vol 2 (2) ◽  
pp. 29
Author(s):  
Fadli Eka Yandra ◽  
S Umar Djufri
Keyword(s):  
Water Pressure ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Small Water ◽  
Turbine Performance ◽  
Low Head ◽  
Pitch Ratio ◽  
Water Turbines ◽  
The City

The use of archimedes screw has shifted its use from pumps to a source of hydropower at low heads as water turbines. Archimedes srew turbine performance is influenced by several parameters including turbine submersion level, turbine tilt angle, pitch ratio, and number of blades. The contour of the lowland Jambi city that is passed by the Batanghari watershed makes the drainage potential can be utilized to become a small-scale hydroelectric power plant using screw turbines, because the contour of Jambi City is low, resulting in small water pressure although the discharge is sometimes large due to the overflow of the Batanghari river, then the choice of turbine with a low head is the solution, in this study, a study was made to calculate the potential drainage flow in the city of Jambi, whether it can be used or not.

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.

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