Journal articles: 'Impulse turbine'

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Astro, Richardo Barry, Hamsa Doa, and Hendro Hendro. "FISIKA KONTEKSTUAL PEMBANGKIT LISTRIK TENAGA MIKROHIDRO." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 6, no. 1 (May 10, 2020): 142. http://dx.doi.org/10.31764/orbita.v6i1.1858.

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ABSTRAKPenelitian ini bertujuan untuk mengetahui prinsip dasar dan sistem kerja pembangkit listrik tenaga mikrohidro (PLTMH) dari sudut pandang fisika sebagai upaya penyediaan dan pengembangan sumber belajar kontekstual. Penelitian ini dilaksanakan menggunakan metode studi literatur, observasi, dan wawancara. Hasilnya ditemukan bahwa PLTMH memiliki tiga komponen utama yakni air sebagai sumber energi, turbin, dan generator. Skema konversi energi pada PLTMH yang menggunakan head adalah sebagai berikut: 1) energi potensial air dari reservoir diubah menjadi energi kinetik pada pipa pesat, 2) energi kinetik air diubah menjadi energi mekanik oleh turbin air, 3) energi mekanik diubah menjadi energi listrik oleh generator. Turbin air berdasarkan prinsip kerja dibagi atas turbin impuls dan turbin reaksi. Turbin impuls memanfaatkan perubahan momentum air sebelum dan setelah menabrak sudu turbin, sedangkan turbin reaksi memanfaatkan perbedaan tekanan pada permukaan sudu. Generator bekerja berdasarkan prinsip induksi elektromagnetik. Ketika rotor generator yang terkopel pada turbin berputar, kumparan konduktor akan memotong garis medan magnet sehingga timbul tegangan induksi. Kata kunci: pembangkit listrik tenaga mikrohidro; konversi energi; turbin, generator. ABSTRACTThe research aims to determine the fundamental principles and working systems of Microhydro power plants from a physical standpoint as an effort to provide and develop contextual learning resources. This study was conducted using literature, observation and interview methods. The results found that PLTMH had three main components i.e. water as energy source, turbine, and generator. The energy conversion scheme on PLTMH that uses the head is as follows: 1) The potential energy of water from the reservoir is converted into kinetic energy on the rapid pipeline, 2) water kinetic energy converted into mechanical energy by water turbine, 3) changed mechanical energy into electrical energy by generators. The water turbine based on the working principle is divided into impulse turbines and reaction turbines. The impulse turbine utilizes a change in water momentum before and after crashing the turbine's sudu, while the reaction turbine utilizes pressure differences on the surface of the Sudu. The generators work based on electromagnetic induction principles. When the rotor generator is attached to the turbine spinning, the conductor coil will cut off the magnetic field line so that the induction voltage arises. Keywords: microhydro power plant; energy conversion; turbine; generator.

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Takao, Manabu, and Toshiaki Setoguchi. "Air Turbines for Wave Energy Conversion." International Journal of Rotating Machinery 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/717398.

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This paper describes the present status of the art on air turbines, which could be used for wave energy conversion. The air turbines included in the paper are as follows: Wells type turbines, impulse turbines, radial turbines, cross-flow turbine, and Savonius turbine. The overall performances of the turbines under irregular wave conditions, which typically occur in the sea, have been compared by numerical simulation and sea trial. As a result, under irregular wave conditions it is found that the running and starting characteristics of the impulse type turbines could be superior to those of the Wells turbine. Moreover, as the current challenge on turbine technology, the authors explain a twin-impulse turbine topology for wave energy conversion.

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Das, Tapas Kumar, Paresh Halder, and Abdus Samad. "Optimal design of air turbines for oscillating water column wave energy systems: A review." International Journal of Ocean and Climate Systems 8, no. 1 (February 1, 2017): 37–49. http://dx.doi.org/10.1177/1759313117693639.

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Oscillating water column wave energy harvesting system uses pneumatic power to run a turbine and generate power. Both reaction (mainly Wells turbine) and impulse type turbines are tested in oscillating water column system and the performances are investigated. Reaction turbines are easy to install, and the operating range is narrow and possesses higher peak efficiency. On the contrary, impulse turbines have the wider operating range and lower peak efficiency. Some of the key parameters for Wells turbine are solidity, tip clearance, and the hub-to-tip ratio. Significant performance improvement is possible by redesigning the turbines using optimization techniques. Till date, surrogate modeling and an automated optimization library OPAL are commonly used in optimization of oscillating water column air turbines. In this article, various types of oscillating water column turbines are reviewed, and optimization techniques applied to such turbines are discussed. The Wells turbine with guide vane has the maximum efficiency, whereas the axial-impulse turbine with pitch-controlled guide vane has the widest operating range. Turbines with optimized geometry have better overall performance than other turbines.

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Winarto, Eko Wismo, Sugiyanto Sugiyanto, Soeadgihardo Siswantoro, and Isworo Djati. "Turbin Hibrid Bi-Directional Sebagai Pemanen Energi pada Thermoacoustic Engine." Jurnal Rekayasa Mesin 12, no. 1 (May 31, 2021): 19. http://dx.doi.org/10.21776/ub.jrm.2021.012.01.3.

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Bi-directional turbines that are commonly applied to convert wave energy into motion energy are the types of Impulse turbines and Wells turbines. Both types of turbines each have advantages and disadvantages. In this research, hybrid turbine type is designed and made to bridge the weaknesses in impulse turbine and turbine wells. Hybrid turbines are made by placing impulse turbines on the outside while turbine wells placed on the inside. In this research, the variation of hybrid bi-directional turbine design aims to find out the most optimal design of this turbine type. Six variations were carried out including a hub to tip ratio of 0.5 with 4 and 5 Wells blades, a hub to tip ratio of 0.6 with 4 and 5 Wells blades, and a hub to tip ratio of 0.7 with 4 and 5 Wells blades. From the test results on thermoacoustic engine media, based on the hub to tip ratio, the most optimal hub to tip ratio is in the order of 0.7 then 0.6, and 0.5. Whereas based on the number of Wells blade, obtained the number of Wells blade 5 is more optimal than the number of Wells blade 4.

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Gordon, J. L. "Hydraulic turbine efficiency." Canadian Journal of Civil Engineering 28, no. 2 (April 1, 2001): 238–53. http://dx.doi.org/10.1139/l00-102.

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A set of empirical equations has been developed which defines the peak efficiency and shape of the efficiency curve for hydraulic turbines as a function of the commissioning date for the unit, rated head, rated flow, runner speed, and runner throat or impulse turbine jet diameter. The equations are based on an analysis of peak efficiency data from 56 Francis, 33 axial-flow, and eight impulse runners dating from 1908 to the present, with runner diameters ranging from just under 0.6 m to almost 9.5 m. The metric specific speeds (nq) ranged from 5.3 to 294. The root mean square error of the calculated peak efficiency for Francis and axial-flow runners was found to be 0.65%. The shape of the efficiency curves was derived from eight Francis, five Kaplan, three propeller, and four impulse turbines. Charts showing the relationship between calculated and actual efficiency curves for these 20 runners are provided. A good match between calculated and measured or guaranteed efficiency was obtained. The equations were also used to determine the relative increase in peak efficiency for new reaction runners installed in existing casings at 22 powerplants, with a root mean square accuracy of 1.0%. The equations can be used to (i) develop efficiency curves for new and old runners; (ii) compare the energy output of alternative types of turbines, where this choice is available; and (iii) calculate the approximate incremental energy benefit from installing a new runner in an existing reaction turbine casing, or onto the shaft of an impulse unit.Key words: hydraulic turbines, turbine renovation, turbine efficiency.

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Gupta, Vishal, Ruchi Khare, and Vishnu Prasad. "Performance Evaluation of Pelton Turbine: A Review." Hydro Nepal: Journal of Water, Energy and Environment 13 (March 13, 2014): 28–35. http://dx.doi.org/10.3126/hn.v13i0.10042.

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Earlier only experimental techniques were used to predict the performance of turbines. With advanced numerical techniques and increase in processing power of computers, Computational Fluid Dynamics (CFD) has emerged as an effective tool for the performance prediction of Pelton hydraulic turbine involving multi-fluid flow. Extensive work has been done for design optimization of reaction turbines using CFD. Now it is being extended for impulse turbines. The flow in reaction turbines involves only water as working medium, but in case of impulse turbines, water and air are working medium. The water jet issued from nozzle is surrounded by air and pressure around the jet and turbine is atmospheric. The performance of Pelton turbine depends upon the shape, size and quality of jet as well as shape of the buckets. In the present paper, the literature review on applications of CFD for performance prediction, design optimization of Pelton turbine have been discussed.DOI: http://dx.doi.org/10.3126/hn.v13i0.10042HYDRO NEPAL Journal of Water, Energy and EnvironmentIssue No. 13, July 2013Page: 28-35Uploaded date: 3/13/2014

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Valladares, Aitor Vega, Manuel Garcia Díaz, Bruno Pereiras, and José Gonzalez Pérez. "Influence of the blade leaning angle on the performance of a radial impulse turbine for OWC converters." Journal of Physics: Conference Series 2217, no. 1 (April 1, 2022): 012072. http://dx.doi.org/10.1088/1742-6596/2217/1/012072.

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Abstract Oscillating Water Column systems (OWC) have been in the spotlight in the last 20 years since these devices are considered one of the most promising devices among wave energy technology. These systems produce electricity by means a generator driven by a turbine, which takes advantage of the bidirectional flow created by the OWC itself. Among these turbines suitable for bidirectional flows, it is possible to find radial impulse turbines, which are the focus of this work. Traditionally, the radial impulse turbines have shown lower efficiencies than their competitors. However, the radial turbines present interesting mechanical features and, recently, some research show that the difference has been reduced. Following this thread, this work deals with another modification in the radial impulse turbine looking for a further improvement. By using a validated CFD model, it has been analysed the influence of the lean angle of the blade. Until now, all the turbines present in the literature are leaned zero degrees, leading to a strong interaction between the guide vanes and the blades. This work shows results of the same turbine, equipped with blades leaning from -5deg to 25deg, in order to determine the influence such a modification on the maximum total-to-static efficiency. Results have revealed a slight improvement in the maximum efficiency for positive leaning angles, whereas negative angles drive the turbine to worse performance.

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Khurana, Sourabh, Dr Varun, and Anoop Kumar. "Experimental Investigation of Erosion and Performance of Turgo Impulse Turbine." Hydro Nepal: Journal of Water, Energy and Environment 12 (October 29, 2013): 76–79. http://dx.doi.org/10.3126/hn.v12i0.9038.

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he present study has been carried out to investigate the effect of silt size, concentration, jet velocity, nozzle angle and operating hour on the erosive wear as well as on the performance of the Turgo impulse turbine in actual flow conditions. Samples of silt were collected from the Beas River (India) near the Pandoh dam. It has been found experimentally that silt parameters, nozzle angle and operating hour of the Turgo turbine increases the erosive wear rate in the turbine components causing efficiency loss in the Turgo impulse turbine and final breakdown of hydro turbines. Hydro Nepal; Journal of Water, Energy and Environment Vol. 12, 2013, January Page:76-79DOI: http://dx.doi.org/10.3126/hn.v12i0.9038 Uploaded Date : 10/29/2013

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Ogawa, T., M. Takao, M. M. A. Alam, S. Okuhara, and Y. Kinoue. "A study of counter-rotating impulse turbine for wave energy conversion-effect of middle vane thickness on the performance-." Journal of Physics: Conference Series 2217, no. 1 (April 1, 2022): 012073. http://dx.doi.org/10.1088/1742-6596/2217/1/012073.

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Abstract In an oscillating water column (OWC) based wave energy device, a water column that oscillates due to the sea wave motion generates a bi-directional airflow in an air chamber, and finally, the bi-directional airflow driven air turbine converts the pneumatic energy into mechanical energy. The counter-rotating impulse turbine for bi-directional airflow has been proposed by M. E. McCormick of the United States Naval Academy in 1978. In a previous study, the authors investigated the effect of the turbine geometry on the performance of a counter-rotating impulse turbine for bi-directional airflow, and it was clarified that the efficiency of the turbine is higher than an impulse turbine with a single rotor for bi-directional airflow in a range of high flow coefficient. Moreover, this impulse turbine has a disadvantage that the efficiency in a range of low flow coefficient is remarkably low due to the deterioration of the flow between the two rotors. In this study, in order to make the counter-rotating impulse turbine practically compatible, the thickness of the middle vanes installed between the two rotors was changed, and the effect of the thickness on the turbine performance was investigated by the computational fluid dynamics (CFD) analysis. As a result, it was found that the efficiency of the counter-rotating impulse turbine with middle vanes increases as the thickness of the middle vanes decreased.

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Saad, Mina, Manuel García-Diaz, and Bruno Pereiras. "Analysis of an optimized radial impulse turbine for an OWC wave energy converter." Journal of Physics: Conference Series 2217, no. 1 (April 1, 2022): 012075. http://dx.doi.org/10.1088/1742-6596/2217/1/012075.

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Abstract OWC concept is one of the most spread technologies among wave energy converters due to several reasons. However, this technology has always deal with the problem of the inherent bidirectional flow. Many solutions have been adopted such as a flow rectification system combined with a unidirectional turbine, several types of bidirectional turbines such as Wells turbine or impulse turbine. In this work, it is shown the performance of an optimized geometry for a radial impulse turbine, which improvement is based on the re-designing of the blades and settling angles of the vanes. A CFD model, validated against results from the bibliography, has been used to simulate both a new and a previous geometry taken as reference. The results of both turbines have been analysed in terms of the loss coefficients for each element in order to analyse the advantages of the new geometry. It has been found that the new geometry exceeds the efficiency of the previous geometry by 5%, being this gain based on the fact that sacrificing the rotor’s efficiency could lead to a great improvement in the performance of the guide vanes, reducing their loss and, in turn, lifting the turbine’s efficiency despite reducing the rotor’s one.

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Goman, Oleg, Andrii Dreus, Anton Rozhkevych, and Krystyna Heti. "Aerodynamic improvement of Darrieus wind turbine." IOP Conference Series: Earth and Environmental Science 897, no. 1 (November 1, 2021): 012001. http://dx.doi.org/10.1088/1755-1315/897/1/012001.

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Abstract Until recently, vertical-axis wind turbines are less extensively developed in wind energetics. At the same time, there are a number of advantages in turbines of such type like their independence from the change of wind direction, lower levels of aerodynamic and infrasound noises, higher structural reliability (compared to horizontal engines), etc. With these advantages, vertical-axis wind turbines demonstrate promising capacities. Inter alia, the productiveness of such turbines can be refined through the aerodynamic improvement of the structure and comprehensive optimization of the rotor geometry. The main purpose of the presented paper is to aerodynamically improve vertical wind turbine in order to increase the efficiency of wind energy conversion into electricity. Within the framework of the classical theory of impulses, this article presents a study of the effect of variation in Reynolds number on the general energy characteristics of a vertical-axis wind turbine with two blades. The integral approach makes it possible to use a single-disk impulse model to determine the main specific indicators of the system. The power factor was calculated based on the obtained value of the shaft torque factor, which in turn was determined by numerically integrating the total torque generated by the wind turbine. To calculate the test problem, we used the classic NACA airfoils: 0012, 0015, 0018 and 0021. The proposed calculation algorithm makes it possible not to indicate the Reynolds number and corresponding aerodynamic coefficients at the beginning of the calculation, but to recalculate it depending on the relative speed, position of the airfoil and the linear speed of the airfoil around the circumference. Proposed modern design techniques can be helpful for optimization of vertical wind turbines.

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Setoguchi, T., M. Takao, and K. Kaneko. "A Comparison of Performances of Turbines for Wave Power Conversion." International Journal of Rotating Machinery 6, no. 2 (2000): 129–34. http://dx.doi.org/10.1155/s1023621x00000129.

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A number of self-rectifying air turbines for wave power conversion have been proposed so far. This paper shows the comparison of the performances of all these turbines proposed for use in the near future. As a result, the impulse turbine with self-pitch-controlled guide vanes is found to have the best performance.

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Rantererung, Corvis L., Titus Tandiseno, and Mika Mallisa. "Development of Four Nossel Cross Flow Turbine." Journal of Physics: Conference Series 2394, no. 1 (December 1, 2022): 012029. http://dx.doi.org/10.1088/1742-6596/2394/1/012029.

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Abstract ross flow turbines are widely used as turbines for driving micro-scale hydropower plants in rural areas, but their efficiency is still low because cross flow turbines only use one nozzle. The utilization of the potential energy of water is not optimal yet to be converted into pressure and kinetic energy of water in the nozzles with high water velocity hitting the turbine blades. The problem of cross flow turbines with one nozzle has an uneven flow of water to the turbine blades, and it is not effective in converting potential energy into power in the turbine. The purpose of this research is to develop a four-nozzle Cross Flow turbine and test its performance. The method used is to conduct experimental testing in a laboratory that tests the performance of a cross flow turbine using four nozzles. A cross flow turbine with four nozzles has better performance than a cross flow turbine using only one nozzle. The results obtained that the cross flow turbine with four nozzles where the water jets out of the nozzle is more evenly distributed and the flow of water enters the turbine blade runner, resulting in a good impulse reaction in the blades. The conclusion is that the performance of the four nozzle cross flow turbine is able to produce higher turbine rotation, power and efficiency.

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MORI, Kentaro, Takahiro SAITO, Shouichiro IIO, and Daisuke Tsunashima. "Development of a Submerged Impulse Turbine." Proceedings of Conference of Hokuriku-Shinetsu Branch 2021.58 (2021): F035. http://dx.doi.org/10.1299/jsmehs.2021.58.f035.

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Muhamad Rizky Septianto, Massus Subekti, and Daryanto. "RANCANG BANGUN TURBIN UAP PADA MAKET PEMBANGKIT LISTRIK TENAGA UAP." Journal of Electrical Vocational Education and Technology 2, no. 2 (March 29, 2020): 37–40. http://dx.doi.org/10.21009/jevet.0022.08.

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The purpose of this study was to produce a prototype steam turbine at maket power plant steam generator torque that can play. The research method used in this research is descriptive analysis by type of engineering. Steam turbine is a Primemover that converts potential energy into mechanical energy in the form of rotation of the turbine shaft. Steam turbine constructed dimensions turbine type used single stage impulse turbine, turbine disc diameter of 33mm, the amount of movement of the blade 30 pieces, the distance between the blade 14,6mm, radious 2,63mm blade, the type of nozzle used convergent, area 3,2cm2 neck cross-section, the cross sectional area of 3,2cm2 side exit. Mockups of the steam turbine can generate 1490 rpm for turbine with a steam generator at a pressure of 4 kg/cm2 using a water volume of 19 liters. Maximum pressure that can be accepted by the steam turbine is 8 kg/cm2 with 11.000rpm, produced according to the process of heating boiler which is the maximum vapor pressure of 8kg/cm2 at a temperature of 1700C. and and be able to turn a generator with a torque of 4.6 Nm with a pressure of 8 kg/cm2 The conclusion of this study is the turbine can be built through the calculations have been carried out and taking into account the performance of the boiler and steam generator.Turbin built to produce 1336.6 rpm to spin the turbine without the steam generator at a pressure of 2 kg / cm2. Steam turbines are built to produce 1408 rpm, and generates a voltage 140.8 volts, and be able to play generatoe torque of 0.6 Nm for turbine with the steam generator at a pressure of 4 kg / cm2. Maximum pressure received by the steam turbine is 8 kg / cm2 at 10 453 rpm for the turbine without a generator, and a voltage of 271.8 volts produces, as well as being able to roll generatoe torque of 0.9 Nm for turbine with a generator on the vapor pressure of the incoming sebesae 8 kg / cm2. Abstrak Tujuan dari penelitian ini adalah untuk menghasilkan prototipe turbin uap yang mampu memutar torsi generator. Metode penelitian yang dipakai dalam penelitian ini adalah analisis deskriptif dengan jenis rekayasa teknik. Turbin uap (steam turbine) adalah penggerak mula yang merubah energi potensial menjadi energi mekanis dalam bentuk putaran poros turbin. Turbin uap yang dibangun memiliki dimensi jenis turbin yang digunakan turbin impuls single stage, cakram turbin berdiameter 33 mm, jumlah sudu gerak 30 buah, jarak bagi antar sudu 14,6mm, jari–jari sudu 2,63mm, jenis nosel yang digunakan konvergen, luas penampang leher 3,2cm2, luas penampang sisi keluar 3,2cm2. Maket turbin uap tersebut dapat menghasilkan 1490 rpm untuk putaran turbin dengan generator pada tekanan uap 4 kg/cm2 menggunakan volume air 19 liter. Tekanan maksimal yang mampun diterima oleh turbin uap ini adalah 8 kg/cm2 dengan 11.000rpm, sesuai yang dihasilkan pada proses memanasan boiler yaitu tekanan uap maksimalnya adalah 8kg/cm2 pada suhu 170oC. serta mampu memutar generator dengan torsi 4,6 N dengan tekanan 8 kg/cm2. Kesimpulan dalam penelitian ini adalah turbin dapat dibangun melalui perhitungan yang telah dilakukan dan dengan mempertimbangkan unjuk kerja antara boiler dan generator.Turbin uap yang dibangun dapat menghasilkan 1336,6 rpm untuk putaran turbin tanpa generator pada tekanan uap 2 kg/cm2. Turbin uap yang dibangun dapat menghasilkan 1408 rpm, dan menghasilkan tegangan 140,8 volt, serta mampu memutar torsi generatoe sebesar 0,6 Nm untuk putaran turbin dengan generator pada tekanan uap 4 kg/cm2. Tekanan maksimal yang diterima oleh turbin uap ini adalah 8 kg/cm2 dengan 10.453 rpm untuk putaran turbin tanpa generator, dan menghasilkan tegangan 271,8 volt, serta mampu memutar torsi generatoe sebesar 0,9 Nm untuk putaran turbin dengan generator pada tekanan uap yang masuk sebesae 8 kg/cm2.

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Thakker, Ajit, and Mohammed Elhemry. "3-D CFD analysis on effect of hub-to-tip ratio on performance of impulse turbine for wave energy conversion." Thermal Science 11, no. 4 (2007): 157–70. http://dx.doi.org/10.2298/tsci0704157t.

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This paper deals with the computational fluid dynamics analysis on effect of hub-to-tip ratio on performance of 0.6 m impulse turbine for wave energy conversion. Experiments have been conducted on the 0.6 m impulse turbine with 0.6 hub-to-tip ratio to validate the present computational fluid dynamics method and to analyze the aerodynamics in rotor and guide vanes, which demonstrates the necessity to improve the blade and guide vanes shape. Computational fluid dynamics analysis has been made on impulse turbine with different hub-to-tip ratio for various flow coefficients. The present computational fluid dynamics model can predict the experimental values with reasonable degree of accuracy. It also showed that the downstream guide vanes make considerable total pressure drop thus reducing the performance of the turbine. The computational fluid dynamics results showed that at the designed flow coefficient of 1.0 the turbine with 0.5 hub-to-tip ratio has better performance compared to 0.55 and 0.6 hub-to-tip ratio turbine.

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Пассар, А. В., Д. В. Тимошенко, and А. Н. Бердник. "Research of the radial-axial turbine of the marine diesel engine impulse turbocharging system." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII), no. 2(52) (June 5, 2021): 74–79. http://dx.doi.org/10.37220/mit.2021.52.2.010.

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В статье представлены результаты исследований радиально-осевой турбины, работающей в составе импульсной системы наддува среднеоборотного судового дизеля. Исследования носили теоретический и экспериментальный характер и базировались на предлагаемом методе проектирования и расчета, который комбинируя на определенных этапах модели расчета радиально-осевой турбины, а также замкнутую модель рабочего процесса комбинированного двигателя, позволяет решать задачи проектирования проточных частей турбины для работы в нестационарном потоке импульсной системы наддува. Целью исследований является отработка основных положений предлагаемого метода проектирования радиально-осевой турбины, работающей в составе импульсной системы наддува комбинированного двигателя, на примере поиска оптимальных параметров радиально-осевой турбины турбокомпрессора среднеоборотного судового дизеля размерности 18/22. В работе получена модернизированная геометрия проточной части турбины. Представлены результаты экспериментальных и расчетных исследований характеристик модернизированной и штатной турбин, подтверждающие повышение эффективности модернизированной турбины во всем диапазоне ее характеристики. Представлены результаты испытаний судового дизеля 6ЧН 18/22 с модернизированной и штатной турбинами по нагрузочной характеристике, показывающие положительное влияние измененной геометрии турбины на эффективные показатели дизеля и подтверждающие возможность использования предлагаемого метода проектирования радиально-осевой турбины системы наддува комбинированного двигателя. The article presents the results of research on a radial-axial turbine operating as part of a pulsed boost system for a medium-speed marine diesel engine. The research was theoretical and experimental in nature and was based on the proposed design and calculation method, which combines at certain stages of the radial-axial turbine calculation model, as well as a closed model of the combined engine workflow, allows you to solve the problems of designing the flow parts of the turbine for operation in a non-stationary flow of a pulse boost system. The aim of the research is to develop basic provisions of the proposed design method of the radial-axial turbine, which is part of pulse systems boost engine combined, for example, finding the optimal parameters of the radial-axial turbine of the turbocharger, the medium-speed marine diesel dimensions 18/22. The upgraded geometry of the flow part of the turbine is obtained. The results of experimental and computational studies of the characteristics of upgraded and standard turbines are presented, confirming the increase in the efficiency of the upgraded turbine over the entire range of its characteristics. The results of tests of the 6ChN 18/22 marine diesel engine with upgraded and standard turbines on load characteristics are presented, showing the positive effect of the changed turbine geometry on the effective performance of the diesel engine and confirming the possibility of using the proposed method of designing a radial-axial turbine of the combined engine supercharging system.

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Villanueva, Mark D., and Jonathan C. Maglasang. "Computational and Experimental Study of a Gas/Steam Turbine ― Derivative Axial Flow Impulse-Type Hydraulic Turbine." International Journal of Materials, Mechanics and Manufacturing 3, no. 2 (2015): 86–91. http://dx.doi.org/10.7763/ijmmm.2015.v3.172.

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Yu, Wen Bo, Xiao Lin Luo, Bing Chen, and Wen Xiang Wang. "Research of Mountain Area Wind Farm Grounding Scheme." Applied Mechanics and Materials 584-586 (July 2014): 2695–99. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.2695.

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Wind power has become one of the most potential and vital green energy sources. Location of the wind farm has a better wind resource，and it is also relatively open. Lightning accident in the wind farm happened occasionally, in order to avoid the situation, which impulse current damages the wind turbine, in the accident, lightning protection grounding system of wind turbine is essential .In this paper, according to the experience of Dongshan wind farm project , the method of how to design the wind turbines and booster station grounding grid as required, the calculation of ground resistance and specific measures to reduce grounding resistance of wind turbine grounding device are discussed.

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Ciappi, Lorenzo, Lapo Cheli, Irene Simonetti, Alessandro Bianchini, Giampaolo Manfrida, and Lorenzo Cappietti. "Wave-to-Wire Model of an Oscillating-Water-Column Wave Energy Converter and Its Application to Mediterranean Energy Hot-Spots." Energies 13, no. 21 (October 26, 2020): 5582. http://dx.doi.org/10.3390/en13215582.

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Oscillating water column (OWC) systems are among the most credited solutions for an effective conversion of the notable energy potential conveyed by sea waves. Despite a renewed interest, however, they are often still at a demonstration phase and additional research is required to reach industrial maturity. Within this framework, this study provides a wave-to-wire model for OWC systems based on an impulse air turbine. The model performs a comprehensive simulation of the system to estimate the attendant electric energy production for a specific sea state, based on analytical models of the primary (fixed chamber) and secondary (air turbine) converters coupled with the tertiary converter (electric generator). A rigid piston model is proposed to solve the hydrodynamics, thermodynamics, and hydrodynamics of the chamber, in a coupled fashion with the impulse turbine aerodynamics. This is solved with a novel method by considering the cascades as sets of blades, each one consisting of a finite number of airfoils stacked in the radial direction. The model was applied for two Mediterranean sites located in Tuscany and Sardinia (Italy), which were selected to define the optimal geometry of the turbine for a specified chamber. For each system, the developed analytical wave-to-wire model was applied to calculate the performance parameters and the annual energy production in environmental conditions typical of the Mediterranean Sea. The selected impulse turbines are able to convert 13.69 and 39.36 MWh/year, with an efficiency of 4.95% and 4.76%, respectively, thus proving the interesting prospects of the technology.

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Thakker, A., T. S. Dhanasekaran, M. Takao, and T. Setoguchi. "Effects of Compressibility on the Performance of a Wave-Energy Conversion Device with an Impulse Turbine Using a Numerical Simulation Technique." International Journal of Rotating Machinery 9, no. 6 (2003): 443–50. http://dx.doi.org/10.1155/s1023621x03000435.

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This article presents work carried out to predict the behavior of a 0.6 m impulse turbine with fixed guide vanes as compared with that of a 0.6 hub-to-tip ratio turbine under real sea conditions. In order to predict the true performance of the actual oscillating water column (OWC), the numerical technique was fine-tuned by incorporating the compressibility effect. Water surface elevation versus time history was used as the input data for this purpose. The effect of compressibility inside the air chamber and the turbine's performance under unsteady and irregular flow conditions were analyzed numerically. Considering the quasi-steady assumptions, the unidirectional steady-flow experimental data was used to simulate the turbines characteristics under irregular unsteady flow conditions. The results showed that the performance of this type of turbine is quite stable and that the efficiency of the air chamber and the mean conversion efficiency are reduced by around 8% and 5%, respectively, as a result of the compressibility inside the air chamber. The mean efficiencies of the OWC device and the impulse turbine were predicted for 1 month, based on the Irish wave climate, and it was found that the total time period of wave data used is one of the important factors in the simulation technique.

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Thakker, A., J. Jarvis, and A. Sahed. "Quasi-Steady Analytical Model Benchmark of an Impulse Turbine for Wave Energy Extraction." International Journal of Rotating Machinery 2008 (2008): 1–12. http://dx.doi.org/10.1155/2008/536079.

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This work presents a mean line analysis for the prediction of the performance and aerodynamic loss of axial flow impulse turbine wave energy extraction, which can be easily incorporated into the turbine design program. The model is based on the momentum principle and the well-known Euler turbine equation. Predictions of torque, pressure drop, and turbine efficiency showed favorable agreement with experimental results. The variation of the flow incidence and exit angles with the flow coefficient has been reported for the first time in the field of wave energy extraction. Furthermore, an optimum range of upstream guide vanes setting up angle was determined, which optimized the impulse turbine performance prediction under movable guide vanes working condition.

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SAITO, Takahiro, Kentaro MORI, Shouichiro IIO, and Daisuke TSUNASHIMA. "Development of a Submerged Impulse Hydro Turbine." Proceedings of Conference of Hokuriku-Shinetsu Branch 2021.58 (2021): F036. http://dx.doi.org/10.1299/jsmehs.2021.58.f036.

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AZEGAMI, Takuto, Shouichiro IIO, and Yoshiaki HANEDA. "Feasibility Study of a Submerged Impulse Turbine." Proceedings of Mechanical Engineering Congress, Japan 2016 (2016): J0520505. http://dx.doi.org/10.1299/jsmemecj.2016.j0520505.

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Hernández, E. "Design and construction of an impulse turbine." Journal of Physics: Conference Series 466 (November 7, 2013): 012036. http://dx.doi.org/10.1088/1742-6596/466/1/012036.

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Pereiras, Bruno, Francisco Castro, Abdelatif el Marjani, and Miguel A. Rodríguez. "An improved radial impulse turbine for OWC." Renewable Energy 36, no. 5 (May 2011): 1477–84. http://dx.doi.org/10.1016/j.renene.2010.10.013.

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USAMI, Saki, Hiroki KOYAMA, Takuto AZEGAMI, Yoshiaki HANEDA, and Shouichiro IIO. "Power Loss on a Submerged Impulse Turbine." Proceedings of Conference of Hokuriku-Shinetsu Branch 2017.54 (2017): C024. http://dx.doi.org/10.1299/jsmehs.2017.54.c024.

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Azegami, Takuto, Yusuke Katayama, Yoshiaki Haneda, and Shouichiro Iio. "Performance of a submerged impulse hydro turbine." IOP Conference Series: Earth and Environmental Science 240 (March 27, 2019): 042014. http://dx.doi.org/10.1088/1755-1315/240/4/042014.

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Tang, Lingdi, Shouqi Yuan, Yue Tang, and Zhijun Gao. "Performance Characteristics in Runner of an Impulse Water Turbine with Splitter Blade." Processes 9, no. 2 (February 5, 2021): 303. http://dx.doi.org/10.3390/pr9020303.

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The impulse water turbine is a promising energy conversion device that can be used as mechanical power or a micro hydro generator, and its application can effectively ease the current energy crisis. This paper aims to clarify the mechanism of liquid acting on runner blades, the hydraulic performance, and energy conversion characteristics in the runner domain of an impulse water turbine with a splitter blade by using experimental tests and numerical simulations. The runner was divided into seven areas along the flow direction, and the power variation in the runner domain was analyzed to reflect its energy conversion characteristics. The obtained results indicate that the critical area of the runner for doing the work is in the front half of the blades, while the rear area of the blades does relatively little work and even consumes the mechanical energy of the runner to produce negative work. The high energy area is concentrated in the flow passage facing the nozzle. The energy is gradually evenly distributed from the runner inlet to the runner outlet, and the negative energy caused by flow separation with high probability is gradually reduced. The clarification of the energy conversion performance is of great significance to improve the design of impulse water turbines.

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Luo, Yongyao, Alexandre Presas, and Zhengwei Wang. "Numerical Analysis of the Influence of Design Parameters on the Efficiency of an OWC Axial Impulse Turbine for Wave Energy Conversion." Energies 12, no. 5 (March 12, 2019): 939. http://dx.doi.org/10.3390/en12050939.

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Oscillating water column (OWC) axial impulse turbines permit the conversion of wave energy into electrical power. Unlike other hydropower units with a mature and well established technology, such turbines have been recently developed, there are still few prototypes operating and therefore there is a large space for optimizing its design. Many recent studies focus on the improvement of the efficiency and transient characteristics by means of experimentation and also simulation techniques. In the present paper we use a 3D numerical simulation model (computational fluid dynamics model with ANSYS-Fluent 18) to analyze the influence of different geometrical parameters on the efficiency of the turbine, which have been less discussed yet. A reference configuration case has been used to validate our simulation model by comparing it with previous experimental results. Then, parametric variations in the guide vane number and type, gaps between the rotating and stationary part and hub to tip ratio have been introduced in the model to discuss the influence of these effects. It is found that some of these parameters have an important influence on the efficiency of the turbine and therefore, the results presented in this paper can help to optimize future designs of OWC impulse turbines.

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Suwartama Wijaya, I. Made, I. Wayan Arta Wijaya, and I. Gusti Ngurah Janardana. "PENGARUH VARIASI TEKANAN AIR TERHADAP PUTARAN TURBIN DAN DAYA OUTPUT YANG DIHASILKAN PROTOTYPE PLTMH MENGGUNAKAN TURBIN TURGO." Jurnal SPEKTRUM 9, no. 2 (June 30, 2022): 173. http://dx.doi.org/10.24843/spektrum.2022.v09.i02.p20.

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Turgo turbine|is}one^type^of|impulse^turbine{that{is often used!in MHP (Microhydro Power Plant) which has a high head due to the sharp curvature of the blade. The case in turgo turbines is that{the|head!is?still)incorrect, because:this^type^of{turbine{uses*a!high(head-to<rotate^the^turbine runner. Based on what was{described, it!is^necessary!to”make|a prototype of PLTMH>using turgo turbines, in|”order{to(be)able:to”carry|out air pressure effect tests to obtain maximum output and efficiency in PLTMH using turgo turbines. The quantitative experimental method is carried out by calculating the primary data obtained. Prototype?testing|in]this{research used^various air!pressures, including 5 psi, 9 psi, 13 psi, 17 psi, 21 psi, and 25 psi. Based on the results of the study, increasing the*value*of^air^pressure given will cause MHP performance to continue to)increase.|The[maximum output!obtained!is?when^the!water^pressure^is the greatest which is 25 psi which|produces:a|turbine rotation of 838 rpm|before being|coupled with a DC generator and 672.6 rpm after being coupled with a generator, the rotation of the generator is 938.4 rpm, generator. voltage is 8.55 volts, and generator current is 1.044 Ampere, Generator Power 8.93 Watt, Torque 0.127 Nm with turbine efficiency 1.08%.

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Joshi, Shubhash, and Ajay Kumar Jha. "Computational and Experimental Study of the Effect of Solidity and Aspect Ratio of a Helical Turbine for Energy Generation in a Model Gravitational Water Vortex Power Plant." Journal of Advanced College of Engineering and Management 6 (July 10, 2021): 213–19. http://dx.doi.org/10.3126/jacem.v6i0.38360.

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Gravitational Water Vortex power plant is a relatively new plant used to generate hydropower from low head rivers and canals. There has been an increase in research in the field of runner design and canal design for GWVPPs throughout the world. As no definite equations are formulated in case of runners used in a GWVPP, they are currently produced by hit and trial method. This research focuses on studying about the use of a pure reaction turbine, Gorlov turbine, to generate power from a GWVPP. ANSYS Fluent was used to perform computational study while the experimental study was done using helical turbine blades fabricated using a 3-D printer. The energy generated is very low compared to the impulse turbines. Both the computational and experimental study shows that when increasing the aspect ratio of the turbine but keeping the solidity same, the efficiency is increased significantly. However, the studies also show that on increasing the solidity, the efficiency seems to decrease. All the turbines used submerged to 3 different depts and all the results show that increasing the submergence increased the efficiency.

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Zhang, L., GZ Tang, ZB Liao, and HC Shang. "Development and experimental research on circumferential impulse microturbine power generation system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 2 (April 4, 2013): 378–87. http://dx.doi.org/10.1177/0954406213484874.

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Circumferential impulse microturbine is a key component of the micro-electro-mechanical system and provides power to the latter. An innovative concept of microturbine power generation system was presented, and prototype improved circumferential impulse microturbine power generation systems were developed, and their output performances were tested. It is validated that the system can operate at a high speed in a dynamic equilibrium state using rolling bearings, and it is found that the output power and rotational speed of a six-blade turbine hollow-cup coil structure is higher than the output power and rotational speed of a six-blade turbine iron-core coil structure. The maximum output power of the eight-blade turbine hollow-cup coil power generation system is 1.1 W, and the maximum turbine rotational speed is 55,000 r/min. The maximum output power of the eight-blade turbine hollow-cup coil system increases up to 25% when compared to the six-blade turbine hollow-cup coil system and increases up to 83% when compared to the six-blade turbine iron-core coil system.

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Tang, Lingdi, Shouqi Yuan, and Yue Tang. "Performance Improvement of a Micro Impulse Water Turbine Based on Orthogonal Array." Mathematical Problems in Engineering 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/5867101.

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The study on structural design and efficiency improvement of the micro impulse water turbine with the super-low specific speed has rarely been reported in literature. In this paper, a micro impulse water turbine was optimized on the base of the orthogonal array of L18(37) with six factors. The range analysis and variance analysis were conducted to present the significance ranking of factors and the optimal combinations of factors, aiming to improve the water turbine efficiency taken as the experimental indicator in the orthogonal experiment. And then the optimal parameter combination for the water turbine was calculated by orthogonal experiment. Moreover, the internal flow field and hydraulic performance were simulated numerically to investigate the principle of performance improvement by comparing the optimized water turbine with the original. Also, the numerical method was verified by experimental result from performance tests of the original water turbine. As a result, the runner torque of the optimized water turbine was 13% higher than that of the original and the water turbine efficiency was improved by 5.8 percentage points at the rated operating condition.

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Shin, Hyungki, Jongjae Cho, Junhyun Cho, Ho-Sang Ra, Bongsoo Choi, Chul Woo Roh, Beomjoon Lee, et al. "Axial Impulse Turbine Design for Supercritical CO₂ Cycle." Transactions of the Korean Society of Mechanical Engineers - B 42, no. 5 (May 31, 2018): 379–85. http://dx.doi.org/10.3795/ksme-b.2018.42.5.379.

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YAMADA, Kohei, Shinya OKUHARA, Manabu TAKAO, M. M. Ashraful ALAM, and Toshiaki SETOGUCHI. "A Twin Impulse Turbine for Wave Energy Conversion." Proceedings of the Fluids engineering conference 2016 (2016): 0608. http://dx.doi.org/10.1299/jsmefed.2016.0608.

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SATO, Issei, Noriyuki FUKAYA, and Shinya HASEGAWA. "E133 Characteristic of Output Power for Impulse Turbine." Proceedings of the National Symposium on Power and Energy Systems 2015.20 (2015): 135–36. http://dx.doi.org/10.1299/jsmepes.2015.20.135.

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KOYAMA, Hiroki, Takuto AZEGAMI, Saki USAMI, and Shouichiro IIO. "Development of an Impulse Turbine for Small Hydropower." Proceedings of Conference of Kyushu Branch 2017.70 (2017): 406. http://dx.doi.org/10.1299/jsmekyushu.2017.70.406.

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Badhurshah, Rameez, and Abdus Samad. "Multi-objective optimization of a bidirectional impulse turbine." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 229, no. 6 (June 3, 2015): 584–96. http://dx.doi.org/10.1177/0957650915589271.

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SHINKAI, Nobuhide, and Yuki UEDA. "Oscillation characteristic of thermoacoustic engine with impulse turbine." Proceedings of the Symposium on Stirlling Cycle 2018.21 (2018): C04. http://dx.doi.org/10.1299/jsmessc.2018.21.c04.

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Mian, Md Suruz, Fumiya Takemura, Kazuto Kuzuu, and Shinya Hasegawa. "Acoustic connection between thermoacoustic engine and impulse turbine." Journal of Applied Physics 128, no. 21 (December 7, 2020): 214901. http://dx.doi.org/10.1063/5.0017955.

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42

Kinoue, Y., N. Shiomi, M. Sakaguchi, H. Maeda, M. M. A. Alam, S. Okuhara, and M. Takao. "A pump system with wave powered impulse turbine." IOP Conference Series: Earth and Environmental Science 240 (March 27, 2019): 052009. http://dx.doi.org/10.1088/1755-1315/240/5/052009.

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43

Santoso, Habibi. "Optimalisasi untuk Menghasilkan Efisiensi Ideal Turbin Uap Pembangkit Listrik TenagaBiomassa Kapasitas 20 MW." STRING (Satuan Tulisan Riset dan Inovasi Teknologi) 3, no. 2 (December 6, 2018): 181. http://dx.doi.org/10.30998/string.v3i2.3044.

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The energy crisis is one of the problems facing by Indonesia. One solution to overcome this problem is turning waste into electricity, leading to a solution to the long-standing waste problems in many areas in Indonesia. This research is part of the initial design of PLTU with Biomassa (Waste) energy sources. This research covers the initial design of the rankine cycle that includes determining the type of turbine to be used, whether the reaction turbine or impulse turbine and the number of turbine shaft and determining a simple, regenerative cycle or another modified cycle. The step taken is comparing thermodinamically the advantages and disadvantages of the simple rankine cycle with the regenerative cycle. The parameters used as the standard of comparison are thermal efficiency, net work and work ratio. From the calculation results, it is determined to use a steam turbine with the type of one-shaft impulse turbine using a regenerative cycle with 3 feedwater heaters because it can increase efficiency up to 50% when compared to a simple regenerative cycle with efficiency of 37%.

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Murtalim, Amir, Sukarman, Karyadi, Agus Supriyanto, Khoirudun, Muhamad Abdika Mafruh, Fachrizal Ahmad Setiawan, and Amar. "OPTIMASI JUMLAH, POSISI, DAN DIAMETER NOZEL TURBIN PELTON MELALUI ANALISIS QFD DAN UJI EKSPERIMENTAL." BUANA ILMU 6, no. 1 (November 17, 2021): 216–30. http://dx.doi.org/10.36805/bi.v6i1.1998.

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Penduduk Indonesia belum sepenuhnya mendapat layanan penerangan listrik, terutama yang berada di daerah terpencil dan berada di lereng-lereng bukit, sementara di lokasi tersebut terdapat potensi energi yang cukup untuk mengerakkan turbin air sebagai penggerak generator listrik. Turbin pelton adalah salah satu jenis turbin impuls yang performancenya dipengaruhi oleh debit air, nosel, dan jumlah sudu, atas dasar tersebut penulis menyajikan artikel yang menerapkan metode quality function deployment (QFD) dan pengujian eksperimental terhadap prototipe turbin pelton di laboratorium Universitas Buana Perjuangan Karawang. Langkah-langkah dalam penelitian ini meliputi studi literatur dan lapangan, perancangan, pembuatan alat uji, pengujian, analisis data, dan kesimpulan. Variasi pengujian berdasarkan pada diameter, posisi dan jumlah nosel terhadap sudu turbin yang berjumlah 12 buah dan berdiameter150 mm, sedangkan untuk pembangkit listriknya menggunakan generator mini berdaya 350 watt. Hasil pengujian yang diperoleh adalah daya input (Pin) terbesar dengan nilai 73,6 watt terdapat pada dn 9 mm dengan posisi nozel atas dan bawah dan jumlah nozel 2 buah. Daya turbin (Pt) ) terbesar dengan nilai 70,1 watt terdapat pada dn= 6 mm, posisi nosel di atas dan jumlah nozel 1 buah, efisiensi turbin (ηt) terbesar dengan nilai 95,4 % terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas, daya generator (Pgen) terbesar 11,7 watt terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas, effisiensi generator (ηgen) terbesar dengan nilai 17,9 % terjadi pada dn = 9 mm dengan jumlah nosel 1 buah dengan posisi nosel di atas dan efisiensi sistem terbesar (ηsis) 17,1% terjadi pada dn = 9 mm dengan jumlah nosel 1 buah d posisi nosel di atas. Kata kunci: Turbin pelton, quality function deployment (QFD), pengujian eksperimental The Indonesian population has not fully received electric lighting services, especially in remote areas and on hillsides, while there is sufficient energy potential to drive water turbines to drive electricity generators. Pelton turbine is one type of impulse turbine whose performance is influenced by water discharge, nozzle, and some blades, on this basis the author presents an article that applies the QFD method and experimental testing of the Pelton turbine prototype in thelaboratory of Buana Perjuangan University, Karawang. The steps in this research include literature and field studies, design, manufacture of test equipment, testing, data analysis, and conclusions. The variation of the test is based on the diameter, position, and some nozzles for the turbine blades, which are 12 pieces and 150 mm in diameter, while for the power plant it uses a 350-watt mini generator. The test results obtained are the largest input power (Pin) with a value of 73.6 watt is found at dn 9 mm with the position of the top and bottom nozzles and the number of nozzles is 2 pieces. The largest turbine power (Pt) with a value of 70.1 watts is found at dn = 6 mm, the position of the nozzle is above and the number of nozzles is 1, the largest turbine efficiency (ηt) with a value of 95.4% occurs at dn = 9 mm with a total 1 nozzle with the nozzle position is above, the largest generator power (Pgen ) of 11.7 watt occurred at dn = 9 mm with some 1 nozzle with the nozzle position is above, the largest generator efficiency (ηgen ) with a value of 17.9% occurred in dn = 9 mm with the number of nozzles 1 piece with the nozzle position on the top and the largest system efficiency (ηsis) 17.1% % occurred at dn = 9 mm with the number of nozzles 1 piece with the nozzle position on the top. Keyword: Pelton turbine, quality function deployment (QFD) experimental testing

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Sangode, Sanket. "Design and Analysis of Steam Turbine Rotor Blade." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (August 31, 2021): 2511–18. http://dx.doi.org/10.22214/ijraset.2021.37806.

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Abstract: A steam turbine is a tool that extracts thermal electricity from pressurized steam and makes use of it to do mechanical work on a rotating output shaft. The steam turbine offers the better thermodynamic performance with the aid of the usage of a couple of levels inside the growth of steam. The levels are characterized by using the manner of strength extraction from them is considered as impulse or reaction mills. On this work the parameters of steam turbine blade various and evaluation is carried out for electricity, existence and warmth switch fees. The varied parameters are the ratio of x-axis distance of blade profile with the aid of chord length and ratio of maximum peak of blade profile in y-path to the chord period. The three-D modeling is executed by way of using Catia software program. The Ansys software is used for static, thermal analysis, subsequently concluded the best design and material (haste alloy, chrome steel, inconel 600) for steam turbine blade, after steam turbine blade imported the stl record 1:2 ratio in to 3-d printing we carried out fast prototyping technique. Keywords: Steam Turbine, Thermal Energy, Impulse Turbine, Reaction Turbine, Static Analysis, Thermal Analysis

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TIAN, Chaoyang, Xianglin KONG, Xihua WANG, Jun LI, and Xuan Zhai. "ICOPE-15-C053 New Technologies Approach to Design Impulse High Pressure Turbine Stages." Proceedings of the International Conference on Power Engineering (ICOPE) 2015.12 (2015): _ICOPE—15——_ICOPE—15—. http://dx.doi.org/10.1299/jsmeicope.2015.12._icope-15-_141.

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Kananda, Kiki, Dean Corio, and Efa Maydhona S. "TURBINES DESIGN FOR HIDROPOWER IN WAY LAAI AND WAY LAMI PESISIR BARAT DISTRICT LAMPUNG PROVINCE." Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) 7, no. 1 (March 16, 2020): 7–11. http://dx.doi.org/10.33019/ecotipe.v7i1.1388.

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Hydropower is considered to be one of important renewable energy sources. Renewable energy is the second-largest contributor to global electricity production after fossil fuel. Hydropower generation presents several advantages over most other sources of electrical power. It includes a high level of reliability, proven technology, high efficiency (about 90%), very low operating and maintenance costs, flexibility and large storage capacity. Based on the types of installation, hydropower can be categorized as; impoundment, diversion, and pump storage, and based on the turbine types can it be classified as reaction and impulse systems. Previous research gives the results of the initial survey, concluding that there are two rivers that have the potential to become a micro or mini-hydro generator. Way Laai and Way Lami. So, we need to know what is turbines type to suit both of river Way Laai and Way Lami. We used the same method with other research that used TURBNPRO software for helping in the design of Turbines. The simulation result gives one alternative to the right turbine design for Way Laai is the orientation vertical of 6 jet Pelton with a peak efficiency of 89.9%. The right alternative turbine design for Way Lami is the vertical orientation Axial turbine/ propeller design with a peak efficiency of 93.3%.

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KANETSUKI, Kotaro, Teppei WATANABE, Manabu TAKAO, Sinya OKUHARA, M. M. Ashraful ALAM, and Yoichi KINOUE. "A Study on Impulse Turbine for Bi-directional Flow." Proceedings of the Fluids engineering conference 2020 (2020): OS09–15. http://dx.doi.org/10.1299/jsmefed.2020.os09-15.

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Singh, Ankit Kumar, Shivam Barman, Santosh Shaw, and Dr P. K. Sinha. "Performance Analysis for an Impulse Turbine – A Case Study." International Journal of Engineering Research and Applications 07, no. 07 (July 2017): 26–30. http://dx.doi.org/10.9790/9622-0707042630.

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Okuhara, Shinya, Manabu Takao, Akiyasu Takami, and Toshiaki Setoguchi. "A Twin Unidirectional Impulse Turbine for Wave Energy Conversion." Open Journal of Fluid Dynamics 02, no. 04 (2012): 343–47. http://dx.doi.org/10.4236/ojfd.2012.24a043.

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Journal articles on the topic 'Impulse turbine'

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