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Iwan Kurniawan
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Riau, Indonesia
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis Energi Gas Engine Siklus Miller Dengan Bahan Bakar Biogas Berbahan Baku POME Atikah Purwantari; Romy Romy; Iwan Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The Biogas Power Plant comes with a form of alternative energy handling efforts originating from POME Because of the engine is continuously operated without stopping, it requires maintenance so that the engine's performance is maintained properly. The decrease in engine performance produces wasted energy so that engine efficiency is not optimal. In addition, the maintenance process takes a long time until the engine can be operatedagain. This is a problem because the maintenance process is carried out on all cylinder engines. The purpose of this study is to calculate and analyze the energy on the left and right exhaust on the gas engine Guascor SFGM 560 Miller Cycle. From the analysis, the biggest energy efficiency is in the left cylinder in the first period which was59.82% at 15.00 PM. and as a comparison in second period the highest efficiency is at 12.00 that was equal to 66.45%.Keywords: miller cycle, biogas, gas engine, energy, effisiensi energy
Kaji Eksperimental Variasi Jarak Turbin Angin Venturi Dengan Turbin Angin Propeler Terhadap Performa Hybrid Wind Turbine Eldhy Susetio; Iwan Kurniawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The hybrid wind turbine in this study is a horizontal axis wind turbine, whichcombining of two different wind turbines.A turbine propeller shaft is 2 m in diameter with blade profiles of S833 and ball wind energy (venturi turbine) of 0.5 meters by the number blade of 5 pieces. Venturi turbine is placed in front of the propeller turbine. This study varying the distance between the rear hub of Venturi turbine by propeller turbine hub is 5 cm, 10 cm and 15 cm. Testing begins with collecting data on the turbine propeller, then performed the retrieval of data from the merger of Venturi turbine with turbine propeller hub by varying the distance between the two turbines. This study suggests that the addition of Venturi wind turbine in front of the propeller wind turbine produces round and a higher power than the wind turbine propellers without Venturi wind turbine in front of it. The addition of the power generated in the generator's turbine hybrid that a distance of 5 cm power generators will increase the amount of 12.7%, while at a distance of 10 cm power generator increases the amount of 28.5%, and the last on the addition of 15 cm distance power generators increased 34.3% magnitude. Keywords: Hybrid wind turbine, Venturi turbine, turbine propeller
The Pressure Drop for Laminar Flow in 3D Straight and Elbow Pipes Using Computational Fluid Dynamics Iwan Kurniawan
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.16

Abstract

Designing piping systems for laminar flow requires an understanding of pressure drop. Pressure drop can offer insights for selecting pipe materials, designing an efficient piping system, and choosing the appropriate elbows and fittings. Utilizing numerical simulations, the pressure drop in straight pipes, 45o bends, 90o bends, and 180o bends is examined. Velocity profiles for straight pipes and bends are compared, revealing the increase in pressure drop caused by the bend in comparison to the straight pipe. The numerical simulation results indicate that the bend results in an increased pressure drop in the pipe's flow.
Mesin Pencetak Pakan Ikan Alternatif Bagi Masyarakat Desa Buluhcina, Kecamatan Siak Hulu, Kabupaten Kampar Badri, Muftil; Aziz, Azridjal; Dalil, Mohammad; Kurniawan, Iwan; Abdurrahaman, Ridwan; Kusuma, Andi Arief
Rekayasa Material, Manufaktur dan Energi Vol 6, No 2: September 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i2.14895

Abstract

Buluhcina is one of the villages in Siak Hulu, Kampar District, Riau Province. The natural wealth potential in Buluhcina includes: (1) several villagers develop cage fish cultivation; (2) the river along the village as a natural potential has lots of fish needed by the community; and (3) lakes and swamps that have the potential to be developed for new jobs. From the community service activities in Buluhcina, it was concluded that: (1) this fish feed molding machine is capable of producing fish feed, the feeds is produced from the machine must be dried by conventional drying (the heat from the sun). (2) Running test for the production of fish feeds that have been made are used as samples of fish feed developed in Buluhcina. Operational training activities for produce the alternative fish feed have been successfully carried out in Buluhcina.
Production of bio-coal based on empty fruit bunches by torrefaction method with fixed bed and tubular continuous reactors Martin, Awaludin; Ginting, Yogie Rinaldy; Kurniawan, Iwan; Agusta, Dhiky Rahman; Khotimah, Nur
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.006

Abstract

Excessive use of fossil energy has negative impacts, which can cause climate change and environmental degradation. Thus, there is a need to find alternative, more sustainable energy sources. Biomass derived from Empty Fruit Bunch (EFB) waste is a newfound renewable energy source. However, its utilization is not optimal due to its low heating value and high chlorine (Cl) and potassium (K) content, which can interfere with combustion. EFB is washed with peat water to reduce potassium and chlorine content, and the torefaction process is used for combustion. This research aims to develop bio-coal production from empty fruit bunches using the torefaction method using fixed beds and continuous tubular reactors. The production process development also aims to obtain a larger production capacity than previous studies. This study uses varying weights of EFB produced into bio-coal, namely 250, 500 and 1000 grams, with a torefaction process temperature of 200°C for 30 minutes. As a result, the peat water flow rate decreased K, Cl and K2O content to the lowest content reduction value, which amounted to 8.31%, 0.42% and 3.96%, respectively. The heating value of bio-coal produced in a fixed bed reactor is 26,166 kJ/kg, while in a continuous tubular reactor, it is 21,720 kJ/kg. Based on these results, the fixed bed reactor shows a higher heating value than the continuous tubular reactor. The heating value obtained from these two types of reactors is comparable to sub-bituminous coal, which is usually used in steam power plants.
Pengaruh Geometri Basin Terhadap Aliran Vortex: Kajian pada Basin Conical, Conical Convex dan Silinder dengan CFD Kurniawan, Iwan; Heri Siswanto; Yohanes, Yohanes; Romy, Romy; Amir Hamzah
JURNAL SURYA TEKNIKA Vol. 11 No. 1 (2024): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v11i1.7187

Abstract

This study aims to evaluate the influence of basin geometry on the formation and characteristics of vortex flow using Computational Fluid Dynamics (CFD). Three types of basin geometries were investigated: cylindrical, conical, and conical convex. CFD simulations were conducted to observe the velocity distribution, and vortex flow patterns generated by each basin. The results indicate that the conical basin produces vortex flows with higher intensity compared to the cylindrical and conical convex basins. The conical basin demonstrated a more focused flow pattern and higher vortex concentration around the central axis, contributing to enhanced vortex formation efficiency. Although the cylindrical and conical convex basins also generated vortex flows, they exhibited a more dispersed velocity distribution and less stable vortices. These findings provide important insights for the design and optimization of vortex turbine systems, particularly in the context of renewable energy applications.
Pendampingan untuk pengembangan Kompor TLUD dalam Pemanfaatan Ampas Sagu sebagai Biopelet dalam Mewujudkan Transisi Energi di Desa Maini Kabupaten Kepualuan Meranti Hafidawati, Hafidawati; Yenie, Elvi; Zahrina, Ida; Setiaries, Vonny; Kurniawan, Iwan; Musfar, Tengku Firly
Unri Conference Series: Community Engagement Vol 6 (2024): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.6.537-542

Abstract

The Assisted Village Service Program was carried out in Maini Darul Aman Village, Tebing Tinggi Barat District, Meranti Islands Regency. This activity aims to assist the community in overcoming the problem of sago pulp waste that has not been optimally utilized. During this time, sago pulp waste is disposed of in a shelter or along the river flow around the sago processing site, which has the potential to pollute the environment. As a solution, this program offers the production of biopellets from sago pulp, which can be used as an alternative to conventional fuels such as firewood and kerosene, and has the potential to become a business opportunity that can improve the family economy. This activity was carried out through several stages, including: socialization to the community about the importance of sago waste management, its impact, and the solutions offered; assistance in processing sago pulp into biomass biopellets; and assistance in using TLUD stoves fueled by sago pulp pellets. The final stage is coaching in marketing management as part of the future development of this program. The Bina Desa program is also integrated with UNRI students' Community Service Program (KKN) activities in 2024, which runs from July to the end of August 2024. Through this program, it is expected that the community can continue to develop the use of biopellets as fuel, both for household needs and industrial scale, such as use in boilers. In addition to protecting the environment, it is hoped that this program can also be a source of income that can improve the welfare of the community.
Experimental Analysis of Conical Basin Models with Vortex Turbines for Small-Scale Renewable Energy Generation Kurniawan, Iwan; Romy, Romy; Hamzah, Amir; Farhan, A
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 1 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i1.530

Abstract

This study investigates the performance of Gravitational Water Vortex Turbines (GWVT) using different conical basin configurations, focusing on the impact of vane designs on turbine efficiency. Four basin models were tested: model A (no vanes), Model B (180-degree vanes), Model C (90-degree vanes), and Model D (45-degree vanes). The basin was constructed from resin mixed with fiber, with the addition of vanes designed in various configurations to enhance vortex formation and energy extraction. Experimental testing was conducted under varying load conditions, with efficiency determined by the ratio of the potential energy of the water to the mechanical energy generated by the turbine. The results showed a significant improvement in efficiency with the introduction of vanes. Model B, featuring 180-degree vanes, demonstrates the highest efficiency, achieving an increase of up to 17.08% compared to the base model (Model A). Model C, with 90-degree vanes, and Model D, with 45-degree vanes, show efficiency increases of 14.56% and 12.08%, respectively. These results imply that the design and arrangement of vanes are essential in enhancing vortex formation and turbine performance.
Study Experimental Darrieus Type-H Water Turbines Using NACA 2415 Standard Hydrofoil Blade Wijaya, Rudi Kusuma; Kurniawan, Iwan
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 9 No. 2 (2021)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v9i2.29257

Abstract

Telah dilakukan kaji eksperimental turbin air Darrieus tipe-H menggunakan blade hydrofoil standar NACA 2415 untuk mengetahui nilai torsi statik dan dinamik yang dihasilkan turbin air Darrieus tipe-H 3 blade dan 6 blade, pengujian menggunakan water tunnel dimensi 6m x 0.6m x 1m. Variasi tiga blade dan enam blade, dengan diameter turbin 0.44 m x 0.15 m pada turbin luar dan 0.18 x 0.14 m pada turbin bagian dalam, panjang chord 0.10 m dengan variasi sudut serang 0º sampai dengan 360º, variasi kecepatan air pertama 0.3 m/s, variasi kecepatan aliran air kedua 0.65 m/s. Kecepatan air 0.3 m/s enam blade, torsi statik 0.3 Nm, torsi dinamik nya 0.384 Nm, kecepatan air 0,65 m/s torsi dinamik 0.432 Nm dan torsi statik nya 0.384 Nm, pengujian turbin Darrieus tiga blade kecepatan air 0,3 m/s nilai torsi dinamik 0.336 Nm dan dengan kecepatan yang sama torsi statik nya 0.264 Nm. Pada kecepatan air 0.65 m/s nilai torsi dinamik sebesar 0.384 Nm, dan nilai torsi statik 0.336 Nm. Dari data hasil pengukuran tersebut dapat disimpulkan bahwa variasi turbin enam blade memiliki nilai torsi statik dan torsi dinamik yang lebih tinggi dari pada turbin tiga blade, jumlah blade sangat berpengaruh terhadap daya serap energi kinetik air untuk di konversikan menjadi torsi statik maupun torsi dinamik.Kata kunci : Turbin Hydrokinetic, Darrieus, Torsi Statik,Torsi DinamikAn experimental study of the H-type Darrieus water turbine was carried out using a standard NACA 2415 hydrofoil blade to determine the value of static and dynamic torque generated by the 3-blade and 6-blade Darrieus H-type water turbine, testing using a water tunnel dimensions of 6m x 0.6m x 1m. Variation of three blades and six blades, with a turbine diameter of 0.44 mx 0.15 m on the outer turbine and 0.18 x 0.14 m on the inner turbine, chord length 0.10 m with variations in angle of attack 0º to 360º, variation of first water velocity 0.3 m / s second water flow velocity 0.65 m / s. Water velocity 0.3 m / s six blades, static torque 0.3 Nm, dynamic torque 0.384 Nm, water velocity 0.65 m / s dynamic torque 0.432 Nm and static torque 0.384 Nm, Darrieus three blade turbine test water speed 0.3 m / s dynamic torque value of 0.336 Nm and with the same speed its static torque is 0.264 Nm. At 0.65 m / s water velocity, the dynamic torque value is 0.384 Nm, and the static torque value is 0.336 Nm. From the measurement data, it can be concluded that the six-blade turbine variation has a higher value of static torque and dynamic torque than the three-blade turbine, the number of blades greatly influences the absorption of water kinetic energy to be converted into static torque and dynamic torque. Keywords: Hydrokinetic Turbine, Darrieus, static torque, dynamic torqueDAFTAR RUJUKANKirke, B.K. (2011). Tests on ducted and bare helical and straight blade Darrieus hydrokinetic turbines, 36, pp.3013-3022Dominy, R., Lunt, P., Bickerdyke A., Dominy, J. (2007). Self-starting capability of a Darrieus turbine. Proc Inst Mech Eng (IMechE) ePart A: J Power Energy ;221: 111-120Decoste, Josh. (2004). Self-Starting Darrieus Wind Turbine. Department of Mechanical Engineering, Dalhousie University.Febrianto, A., & Santoso, A. (2016). “Analisa Perbandingan Torsi Dan rpm Tipe Darrieus Terhadap Efisiensi Turbin”. Fakultas Teknologi Kelautan, Institut Teknologi Sepuluh Nopember (ITS)Febriyanto, N. (2014). “Studi Perbandingan Karakteristik Airfoil NACA 0012 Dengan NACA 2410 Terhadap Koefisien Lift dan Koefisien Drag Pada Berbagai Variasi Sudut Serang Dengan CFD” Fakultas teknik, Universitas Muhammadiyah SurakartaSaputra, G. (2016). Kaji Eksperimental Turbin Angin Darrieus-H Dengan Bilah Tipe NACA 2415. Universitas Riau, JOM Teknik Mesin vol. 3 No. 1.Hafied, B. (2018). Kaji Eksperimental Torsi Statik Dan Torsi Dinamik Hidrokinetik Turbin Savonius Single Stage Type Bach Tiga Sudu. Tugas Akhir Teknik Mesin. Fakultas Teknik Universitas Riau.Hau, E. (2005). Wind Turbines:  Fundamentals, Technologies, Aplication, Economics. Springer.  Berlin.Kaprawi. (2011), Pengaruh Geometri Blade Dari Turbin Air Darrieus Terhadap Kinerjany. Prosiding Seminar Nasional AVoER ke-3 PalembangKhan, M. J., Bhuyan, G., Iqbal M. T., & Quaicoe J.E. (2009). Hydrokinetic Energy Conversion Systems and Assessment of Horizontal and Vertical Axis Turbines for River and Tidal: Applications A Technology Status Review. Applied Energy, 86, 1823-1835.Lain, S., & Osario, C. (2010). Simulation and Evaluation of a Sraight Bladed Darrieus Type Cross Flow Marine Turbine. Journal of Scientific & Research, Vol. 69 p.906-912Marizka, L. D. (2010). Analisis Kinerja Turbin Hydrokinetic Poros Vertical Dengan Modifikasi Rotor Savonius L Untuk Optimasi Kinerja Turbin.  Tugas Akhir Sains Fisika. FMIPA-Universitas Sebelas Maret.Malge, P. (2015).Analysis of Lift and Drag Forces at Different Azimuth Angle of Innovative Vertical Axis Wind Turbine.International Journal of Energy Engineering 4(5-8).Teja, P., D. (2017). Studi Numerik Turbin Angin Darrieus – Savonius Dengan Penambahan Stage Rotor Darrieus. Institut Teknologi Sepuluh Nopember, Surabaya.Zobaa, A. F., & Bansal, R. C. (2011). Handbook of Renewable Energy Technology. USA: World Scientific Publishing Co. Pte. Ltd.
Co-Authors Abdurrahaman, Ridwan Agusta, Dhiky Rahman Amir Hamzah Amir Hamzah Andika Atikah Purwantari Awaludin Martin Azridjal Aziz Dalil, Mohammad Dandi, Erico Dhiki R. A. Dodi Sofyan Arief, Dodi Sofyan Eldhy Susetio Elvi Yenie, Elvi Farhan, A Ginting, Hardianto Ginting, Yogie Rinaldy Hafidawati, Hafidawati Hakim, Hasanul Heri Siswanto Ida Zahrina Johanes Johanes, Johanes Julianto, Arie Khotimah, Nur Kusuma, Andi Arief Muftil Badri Osman, Kahar Romy Romy SATRIYAS ILYAS Setiaries, Vonny Tengku Firly Musfar, Tengku Firly Wijaya, Rudi Kusuma Yohanes Yohanes Yosef John Kenedi Silalahi