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Analisis Pemodelan Sistem Hibrid Proton Conducting Solid Oxide Fuel Cell (pSOFC) â€“ Turbin Gas Mikro Pada Matlab-Simulink Pranoto, Bayu; Tseng, Chung-Jen; Wardana, ING
Rekayasa Mesin Vol 7, No 1 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

This study simulated Proton Conducting Solid Oxide Fuel Cell (pSOFC) â€“ Micro Gas Turbine (MGT) hybrid system on three different configuration. The first configuration use bypass hot gas from combustor going to fuel heater without Â pass the turbine first. The second configuration use bypass hot gas out of turbine going to fuel heater. The third configuration is combined bypass out of combustor and also bypass out of turbine. The performance of these system are analyzed by using variation of operating pressure, fuel utilization (Uf), steam to carbon ratio (S/C), and bypass valve. Moreover, the impact of different bypass position were also evaluated. The result shows that the efficiency of using a double bypass hot gas flow after combustor and turbine is about 67%. This configuration became the best one among of another two configuration which proposed in this research. Â The utilization of heat by using a double bypass hot flow gas after turbine and combustor has proven more effective to increase the system efficiency. Means that it can reduce the heat losses of the system.

PENGARUH MODEL SUDU OVERLAP DAN HELIX PADA PROSES INISIASI PUTARAN TURBIN SAVONIUS Witono, Kris; Nasir, Moh.; Faizal, Elka; Wicaksono, Hangga; Pranoto, Bayu
Otopro Vol 15, No 1 (2019)
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n1.p27-31

This research proposes a new model of overlap and helix blade shape. The overlap shape of the blades gives room to the air flow shortly after pounding the blades. Air flow direction is strived to be able to push the next blade so that the process of the turbine blade rotation becomes more effective. While the helix model is expected to produce a more efficient turbine rotation due to its multilevel shape. The wind speeds tested were 2 m / s, 4 m / s, and 6 m / s. Turbine speed rotation data retrieval is carried out at each additional time. The overlap blade has a greater angular velocity value of 9.4 rad / s at 2 m / s wind speed, 21.9 rad / s at 4 m / s wind speed, and 29.8 rad / s at 6 m / s wind speed.Turbines with multilevel helix blades have a higher level of stability compared to overlap blades. This is because there are two levels of turbine blades which have an angle difference of 600 which can receive more stable wind collisions. However, due to the smaller cross-sectional area of the helix blade turbine (ie 50% of the overlap blade) the effective impact area on the blade is also getting smaller. So that the energy that can be converted is also relatively smaller than the overlapping blade.

Pengaruh Model Sudu Overlap dan Helix pada Proses Inisiasi Putaran Turbin Savonius Witono, Kris; Nasir, Moh.; Faizal, Elka; Wicaksono, Hangga; Pranoto, Bayu
Otopro Vol 15, No 1 (2019)
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v15n1.p27-31

This research proposes a new model of overlap and helix blade shape. The overlap shape of the blades gives room to the air flow shortly after pounding the blades. Air flow direction is strived to be able to push the next blade so that the process of the turbine blade rotation becomes more effective. While the helix model is expected to produce a more efficient turbine rotation due to its multilevel shape. The wind speeds tested were 2 m / s, 4 m / s, and 6 m / s. Turbine speed rotation data retrieval is carried out at each additional time. The overlap blade has a greater angular velocity value of 9.4 rad / s at 2 m / s wind speed, 21.9 rad / s at 4 m / s wind speed, and 29.8 rad / s at 6 m / s wind speed.Turbines with multilevel helix blades have a higher level of stability compared to overlap blades. This is because there are two levels of turbine blades which have an angle difference of 600 which can receive more stable wind collisions. However, due to the smaller cross-sectional area of the helix blade turbine (ie 50% of the overlap blade) the effective impact area on the blade is also getting smaller. So that the energy that can be converted is also relatively smaller than the overlapping blade.

Reverse Engineering Design Of Ceiling Lamp Changer To Increase Product Value By Using Dfma Methode Pranoto, Bayu; Weddakarti, Eva; Perkasa, Rilis Eka; Ekasari, Silvia Rahmi; Supriyanto , Nicky Suwandhy Widhi
Jurnal Syntax Transformation Vol 6 No 6 (2025): Jurnal Syntax Transformation
Publisher : CV. Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jst.v6i6.1083

The prevalent manual method of replacing ceiling lamps, which often involves climbing on unstable furniture, poses significant safety risks, including potential falls, electrocution, and other severe injuries. This common practice underscores an urgent need for safer and more efficient lamp maintenance solutions in both domestic and commercial settings. This research aims to mitigate these inherent dangers by developing and upgrading conventional ceiling lamp changers into a semi-automatic system. The primary objectives are to enhance the safety, speed, and overall ease of the lamp replacement process, thereby effectively minimizing the risk of user injury. The proposed methodology involves designing a semi-automatic ceiling lamp changer by integrating a control switch mechanism that enables remote rotation of the lamp holder. This innovative approach will facilitate the safe removal and installation of lamps without direct manual contact or the necessity of climbing. Concurrently, comprehensive product cost planning and market-driven pricing strategies will be conducted to ensure the device’s affordability and widespread community acceptance. The successful development of this semi-automatic ceiling lamp changer is anticipated to provide a significantly safer, faster, and more convenient alternative for lamp replacement. This remote-operated design is expected to substantially reduce injury incidents associated with current manual methods. By ensuring affordability and market compatibility, this innovation aims to achieve broad community adoption, ultimately contributing to safer environments for lamp maintenance.

SOLAR PANEL APPLICATION IN KOI SPAWNING PONDS FOR IMPROVED FISH FARMING PRODUCTIVITY IN TULUNGAGUNG Adiwidodo, Satworo; Asrori, Asrori; Witono, Kris; Fakhruddin, Muhammad; Pranoto, Bayu; Yudiyanto, Eko; Sulistyono, Sulistyono
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 8 No. 4 (2024): DESEMBER
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v8i4.2484

The Community Service (CS) program took place in Sumberingin Kidul Village, Ngunut District, Tulungagung Regency, approximately 100 km southwest of Malang City. The target group for this program includes small and medium enterprises (SMEs) engaged in koi fish spawning. Our partners face several challenges, primarily the reliance on aeration pumps powered by the national electricity grid (PLN) to supply oxygen to the ponds. The program aimed to install a 100 Wp solar panel system to generate clean energy for a low-voltage aeration pump, helping to maintain optimal oxygen levels in the pond and supporting healthy fish growth. The program successfully implemented this solar-powered aerator pump system in the pond area, providing an innovative, sustainable solution that empowers the community by integrating science and technology into fisheries. It is hoped that this program will inspire other fish farmers in Tulungagung and surrounding areas to adopt similar sustainable practices.

Uji Tarik Komposit Serat Alam (Batang Pisang) dengan Variasi Resin Polimer dan Fraksi Volume sebagai Material Struktur Cladding Pranoto, Bayu; Firmansyah, Hilmi Iman; Wirawan, Wirawan; Sulistyono, Sulistyono
Metrotech (Journal of Mechanical and Electrical Technology) Vol 5 No 1: Januari 2026
Publisher : Fakultas Sains dan Teknologi, UNIRA Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Limbah pohon pisang yang meliputi batang pohon memiliki potensi pemanfaatan yang beragam, diantaranya dapat digunakan menjadi struktur material pada bahan bangunan salah satu diantaranya adalah cladding. Pada penelitian ini dibuat komposit menggunakan serat alam (batang pisang) menggunakan berbagai jenis resin polimer dan diuji kekuatan tariknya yang nantinya akan dibuat menjadi struktur cladding. Cladding merupakan salah satu teknik dalam konstruksi dengan mengaplikasikan material yang berbeda-beda dengan tujuan membuat suatu lapisan. Sampai saat ini material yang biasa digunakan sebagai cladding adalah kayu, vinyl, batu veneer dan logam. Komposit mulai digunakan sebagai bahan alternatif pengganti struktur cladding dengan memanfaatkan serat alam dalam hal ini adalah batang pohon pisang sebagai bahan alternative pengganti material cladding pada umumnya. Penelitian ini mengevaluasi sifat mekanik komposit serat alam berbahan baku batang pisang dengan matrik resin poliester dan epoxy melalui uji tarik. Komposit dibuat dengan tiga variasi fraksi volume serat yaitu 30%, 50%, dan 70% untuk mengetahui pengaruh kadar serat terhadap kuat tarik komposit. Hasil uji tarik menunjukkan bahwa peningkatan fraksi volume serat berbanding lurus dengan peningkatan tegangan tarik komposit. Pada fraksi volume serat 30%, tegangan tarik maksimum yang diperoleh sebesar 10,3 MPa, sedangkan pada fraksi volume 50% meningkat menjadi 13,9 MPa. Tegangan tarik tertinggi dicapai pada fraksi volume serat 70% dengan nilai sebesar 19,0 MPa.

Lunch Box Innovation Product Design In The Millennial Era Pranoto, Bayu; Firmansyah, Hilmi Iman; Wicaksono, Hangga; Fakhruddin, Muhammad; Perkasa, Rilis Eka
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 2 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i2.52100

Almost all kids still bring a lunch box and a bottle of water in their bag when they go to school. His mother always prepares a lunch box complete with a drinking water bottle, hoping that his son can enjoy his favorite lunch and avoid starvation. Sometimes the mother is distraught when the child has brought the lunch box, but the water bottle is left behind. Then the mother was willing to take her child's water bottle to her school. This is certainly not expected by either the mother or the child. As a form of concern for the author to this problem, the author proposes a lunch box design with a lunch box lid that also functions as a drinking water bottle. The idea of this design proposal is one grab. Both are food & drink in your hand. The goal is how to make kids can grab their food and drink quickly and practice. So, it is proposed to modify the top cover of the standard food pack to become a drink bag. The design process begins with analyzing market needs, making sketches, creating 3D design models using the Autodesk Inventor application, material selection, and product evaluation.

Initial Rotation Characteristic Investigation of a Hybrid Savonius - Darrieus Wind Turbine using 6 DOF Computational Fluid Dynamics Wicaksono, Hangga; Susilo, Sugeng Hadi; Pranoto, Bayu; Fakhruddin, Muhammad
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 1 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i1.47577

The inconsistency of the wind flow considered as one of the factors which tend to decrease the performance of the wind turbine. This paper proposes a further analysis of the initial rotation characteristic of a hybrid Savonius-Darrieus wind turbine. The addition of the Darrieus blade intends to increase the aerodynamic stability of the overlapping Savonius turbine. This study implements 2D Computational Fluid Dynamics (CFD) transient analysis using the six Degrees of Freedom (DOF) methods in 0°, 30°, 60°, and 90° Darrieus blade position along with 2, 4, and 6 m/s wind speed variations. The results of the aerodynamic analysis show that the location of the Darrieus 30° turbine provides the greatest initial repulsion, especially when the turbine rotation is above 90°, the position of the Darrieus blade can provide additional impulse force when the Savonius turbine tends to be passive. This effect occurs more significant at higher wind speeds. Savonius with 3-blade modification has a more stable level of force distribution than the 2-blade modification, although the value is smaller. This shows that the 3-blade Savonius provide a higher stability of angular velocity development.

Pressure Drop and Void Fraction of Two-Phase Flow (Air-Water) in Grooved Vertical Pipes Aji, Supa Kusuma; Suwandhy, Nicky; Gunawan, Chandra; Pranoto, Bayu; Wicaksono, Hangga
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 2 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i2.76968

In an industrial environment, Two-phase flows has many weaknesses, including pressure drop and void fraction. One strategy to reduce losses that arise is to use passive methods. The passive method used is to utilize the shape of the grooves in the channel. In this study, the flow is used to determine its effect on the pressure drop and void fraction that appears in two-phase flow. The experimental method was used for this study. The test pipe is equipped with 16 grooves, while the smooth pipe (without grooves) is used as a comparison. The test pipe is made of acrylic material. The water fluid is circulated using a centrifugal water pump with a superficial speed of 0.33-0.42 m/s. Air fluid is supplied using a compressor with superficial speeds of 0.049, 0.066, and 0.082 m/s. Measurement of pressure drop was carried out using a pressure transmitter with an Arduino data logger. The void fraction is calculated by determining the ratio of the volume fraction of water and air in the test tube. The results of the study revealed that the use of 16 grooves in the pipe can reduce the pressure drop and cavity fraction that appears when compared to smooth pipes.

Design And Control System of Automatic Control System of Coal Flow on Belt Conveyor Installation Pranoto, Bayu; Gunawan, Chandra; Firmansyah, Hilmi Iman; Wicaksono, Hangga; Nugraha, Andhika Angger; Trifiananto, Muhammad
Mekanika: Majalah Ilmiah Mekanika Vol 20, No 2 (2021): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v20i2.51986

In this study, we discuss a case where the installation of a belt conveyor, which was initially only one line, was then made a new branch that supplies coal to other power generating units. Equitable capacity distribution and continuity of coal distribution are the main focus of this study. Therefore, an automatic control system of coal flow divider on belt conveyor installation was designed. The working principle of this coal flow splitting system is to control the movement of the straight blade plow that directs the flow of coal to each unit at a particular time and continuously. Straight blade plows in the form of steel metal plate with a thickness of about 10 mm in which one end is connected to the end of the pneumatic cylinder. The automatic control system of the coal flow divider in belt conveyor installation was designed using CX-Programmer and CX-Designer applications. CX-Programmer serves to create automatic control logic concepts. While the CX-designer functions to create a Human Machine Interface (HMI). The results of this study are in the form of control logic lines that can be applied to Programmable Logic Control (PLC) devices and Human Machine Interface (HMI) equipment.

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