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Ranteallo, Obet
Universitas Cenderawasih
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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PERFORMANCE ANALYSIS OF THE ELECTRIC TROLLEY OF OXYGEN CYLINDERS BASED ON THE ROAD SLOPE Costantinus Oei; Maran Gultom; Obet Takke Ranteallo; Thobby Wakarmamu; Marthen Liga; Endang Hartiningsih; Johni Jonatan Numberi; Akbar Silo
ROTOR Vol 16 No 1 (2023)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v16i1.40522

Abstract

The demand for efficient distribution of oxygen cylinders at Abepura Regional General Hospital (RSUD Abepura) has been steadily increasing due to the growing needs of staff members and patients who expect high-quality service within the hospital premises. In response to this demand, this study aims to propose a transportation system that is not only automated but also time-saving, with the ultimate goal of enhancing medical services in a more efficient, eco-friendly, and safe manner. One of the main challenges faced in the distribution process is the hilly terrain surrounding RSUD Abepura. The presence of these hills makes it difficult to manually distribute the heavy 72 kg gas cylinders, which is the current method employed at the hospital. To overcome this challenge, this research suggests implementing an innovative solution—an electric trolley—that can effectively facilitate the distribution and flow of oxygen cylinders at RSUD Abepura. The findings of this study conclusively demonstrate that the electric trolley is not only a suitable but also a convenient solution for the operators and medical staff involved in the distribution process. By utilizing the electric trolley, they can distribute oxygen cylinders without facing any hindrances posed by the uphill roads, ultimately resulting in significantly improved time efficiency and service effectiveness at RSUD Abepura.
Arang Tulang Kerbau Sumber Karbon Pack Carburizing untuk Meningkatkan Kekerasan Bola Baja Bantalan Roda Sepeda Obet Ranteallo; Yafet Bontong; Frans Robert Bethony; Dultudes Mangopo
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (886.456 KB) | DOI: 10.36418/syntax-literate.v7i3.6424

Abstract

Pack carburizing atau media padat bertujuan untuk meningkatkan nilai karbon baja terutama pada baja karbon rendah sehingga dengan bertambahnya nilai karbon pada baja maka meningkat pula nilai kekerasanya. Penelitian ini menggunakan bola baja (agel sepeda) sebagai objek perlakuan pack carburizing dan Arang Tulang Kerbau (ATK) sebagai sumber karbon dan Barium karbonat (BaCO3) sebagai katalis. Metode, komposisi rasio 60% ATK: 40% BaCO3, 70% ATK: 30% BaCO3, 80% ATK: 20% BaCO3, temperatur pemanasan 8500C dan 9500C, waktu tahan 2 jam dan pendinginan cepat dengan air biasa. Hasilnya, Nilai kekerasan bola baja yang paling baik pada temperatur pemanasan 8500 C berada pada komposisi rasio pack carburizing 80% ATK: 20% BaCO3 sebesar 212,77 HB, sedangkan pada temperatur pemanasan 9500 C juga komposisi rasio pack carburizing 80% ATK: 20% BaCO3 sebesar 219,84 HB.
ANALISA PENGARUH DERAJAT KEMIRINGAN TERHADAP KINERJA ELECTRIC TROLLEY TABUNG GAS OKSIGEN DI RSUD ABEPURA Costantinus Oei; Maran Gultom; Obet Takke Ranteallo
JURNAL SIMETRIK Vol. 13 No. 1 (2023)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v13i1.1639

Abstract

The demand for quick and easy distribution of oxygen cylinders at Abepura Regional General Hospital (RSUD Abepura) is increasing. Every operator, nurse, and patient desires quality in the hospital service process. This research explains how to build an automated and time-saving transportation system for oxygen cylinders to facilitate medical services efficiently, environmentally friendly, and safely. This is crucial due to the road conditions at RSUD Abepura, which have particular inclinations that hinder the distribution of 72 kg gas cylinders. The gas cylinder trolleys at RSUD Abepura are still manual. Therefore, this research offers an innovative solution, an electric trolley, as one of the methods to facilitate the distribution and traffic flow of oxygen cylinders at RSUD Abepura. The research results show that the electric trolley provides a suitable and convenient solution for operators and medical personnel in distributing oxygen cylinders without being hindered by the incline of the hospital road, thereby improving time efficiency and service effectiveness at RSUD Abepura.
PEMBUATAN MCK UMUM DI OBJEK WISATA KALI BIRU KAMPUNG BERAB DISTRIK NIMBOKRANG KABUPATEN JAYAPURA Obet Ranteallo; Joni Joni; Pither Palamba; Samuel P. Siregar
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 4 (2023): Volume 4 Nomor 4 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i4.18737

Abstract

MCK singkatan dari Mandi, Cuci, Kakus yang merujuk pada sarana fasilitas umum yang digunakan bersama. MCK dimanfaatkan oleh beberapa keluarga di lokasi pemukiman cukup padat dan tingkat kemampuan terbilang ekonomi rendah untuk keperluan mandi, mencuci, dan buang air. Sebagai kegiatan yang menjadi kebutuhan manusia setiap harinya, MCK menjadi sarana yang sering dikunjungi. Untuk itu MCK umum harus memenuhi syarat utama yaitu tersedianya air bersih. Tujuan dari pengabdian ini adalah dapat membangun MCK umum pada objek wisata Kali Biru Kampung Berab Distik Nimbokrang Kabupaten Jayapura untuk memenuhi fasilitas kebutuhan utama pengunjung sebagai keperluan mandi, mencuci, dan buang air. Metode pengabdian yang dilakukan yaitu: membangun MCK umum langsung ditempat obyek wisata Kali Biru di Kampung Berab Distrik Nimbokrang Kabupaten Jayapura. Hasilnya, satu unit MCK umum telah selesai di bangun di objek wisata Kampung Berab Distrik Nimbokrang Kabupaten Jayapura Provinsi Papua.
Analysis of Natural Convection Heat Transfer in Barapen Cooking in Papua Numberi, Johni Jonathan; Palamba, Pither; Giai, Agustinus; Rumar, Kristofel; Joni; Ansanay, Yane; Ranteallo, Obet T.; Siregar, Samuel P.; Kaiwai, Ruben M.; Rantepulung, Selyus; Werdani, Anastasia Sri; Griapon, Nourish; Wanane, Yohanis; Manalu, Janviter; Safanpo, Apolo; Karapa, Enos; Hartiningsih, Endang; Liga, Marthen; Wambrauw, Oscar O.; Silo, Akbar
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6562

Abstract

Barapen, a cooking tradition in various indigenous Papuan communities. To date, various social science studies have been conducted to examine social values, business economics, and political economy. While research in the aspects of applied science has yet to be conducted to study the phenomenon of heat transfer by natural convection from hot stones to food in cooking packs, this research was conducted. The purpose of this research is to study the phenomenon of heat transfer by natural convection from hot stones to food in cooking packs. In this study, a square-shaped artificial pool (260 cm x 210 cm x 50 cm) with white batah stone walls was used to cook food in a barapen. On the four walls, a type K thermocouple is inserted to measure the temperature at 3 layers, which will be the object of research. The ingredients are vegetables, sweet potatoes, and chicken meat that has been cut and stoned. As a discussion, the temperature gradient between layers occurs due to the difference in the amount of volumetric heat against time in each layer. The difference in the amount of heat in each layer is due to the difference in the density of the hot vapor trapped in each layer. Thus, it can be said that the cooking of food in Barapen occurs due to natural heat convection.
Analisis Pengaruh Arus Listrik dan Elektroda Terhadap Kekuatan dan Kekerasan pada Proses Pengelasan SMAW Baja Karbon Rendah Enos Tambing; Thomas Pagasis; Obet Takke Ranteallo; David Mangallo; Samuel Parlidungan Siregar; Agustinus Agustinus
G-Tech: Jurnal Teknologi Terapan Vol 8 No 2 (2024): G-Tech, Vol. 8 No. 2 April 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i2.4070

Abstract

Pengelasan SMAW, merupakan metode umum dalam pengelasan busur listrik, menjadi fokus penelitian menggunakan pelat baja karbon rendah dengan variasi diameter elektroda. Tujuan utamanya adalah mengevaluasi kekuatan hasil pengelasan serta kekerasan permukaan zona spesimen. Dengan menggunakan pendekatan eksperimental, pelat baja karbon rendah dipotong berbentuk alur V, dan disambung menggunakan las listrik SMAW. Data yang dikumpulkan melibatkan uji Tarik dan pengujian kekerasan di tiga zona pengelasan. Hasil menunjukkan bahwa panas yang dihasilkan arus listrik berdampak signifikan pada perubahan kekuatan dan kekerasannya. Kekuatan tarik tertinggi tercapai pada pengelasan dengan arus 120 A, dan nilai kekerasan bervariasi di masing-masing zona. Pada base metal (BM), tingkat kekerasan tertinggi pada pengelasan dengan arus 80 A dan elektroda berdiameter 2,6 mm. Sebaliknya, zona HAZ menunjukkan tingkat kekerasan maksimal spesimen dengan arus 120 A dan elektroda berdiameter 3,2 mm. Daerah weld metal (WM) mencapai tingkat kekerasan tertinggi spesimen dengan arus listrik 120 A dan elektroda berdiameter 3,2 mm.
Pemakaian Sistem Venturi Scrubber– EGR (Exhaust Gas Recirculation) Terhadap Performa Mesin Diesel Satu Silinder Samuel Parlindungan Siregar; Joni Joni; Obet Takke Ranteallo
G-Tech: Jurnal Teknologi Terapan Vol 8 No 2 (2024): G-Tech, Vol. 8 No. 2 April 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i2.4123

Abstract

Reusing exhaust gas based on potential energy that has not been completely burned can absorb heat in the combustion chamber thereby increasing the performance of diesel engines. The aim of this research is to determine the effect of using an EGR venturi scrubber on the performance of a single cylinder diesel engine. This research was carried out on a single cylinder diesel motorbike with a capacity of 200cc. Testing was carried out using an EGR venturi scrubber with valve variations of 10%, 20% and 30% compared to standard (0% EGR). Test data was obtained through VDAS technology software by loading the water entering the dynamometer at the test installation. The research results showed that testing using the EGR venturi scrubber on diesel motorbikes had an influence on engine performance. The best performance was obtained by using a venturi scrubber with a valve opening of 30%, where at a maximum rotation of 3000 rpm the torque was 6.57 Nm, the effective power was 2110 Watts, the average effective pressure was 4.72 bar, the specific fuel consumption was 0 .0549 kg/kWh, and a thermal efficiency of 58.42%.
PELATIHAN MANUFACTURING TOOLS ORNAMEN TERALIS BAGI KARYAWAN BENGKEL LAS GESEK MENYALA DI DISTRIK HERAM KOTA JAYAPURA Ranteallo, Obet; Joni, Joni; Palamba, Pither; P. Siregar, Samuel
Jurnal Abdimas Bina Bangsa Vol. 6 No. 1 (2025): Jurnal Abdimas Bina Bangsa
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jabb.v6i1.1657

Abstract

The welding workshop industry is one of the sectors that continues to grow along with the increasing demand for security and aesthetics in buildings, both residential and commercial. Window grilles and fences are two main components that not only function as protection but also as decorative elements that can add aesthetic value to a building. Therefore, it is important for welding workshop employees to have adequate skills and knowledge in making window and fence trellis ornaments. The purpose of this service is: Improving the technical skills of friction welding workshop employees in making window and fence trellises with various ornamental designs; including 90 degree angle metal welding guides, star-shaped tools, and zig-sag. The service methods used: Theory and Introduction, namely an introduction to the importance of ornaments in window and fence trellises, the history and evolution of design, and the basic theory of making ornaments; Field Practice, namely employees will be directly involved in the process of making the ornaments. This stage includes cutting, welding, and forming materials according to the desired design; Design Development, namely participants/employees are taught drawing techniques and designing ornamental designs using simple drawings; Final Project, namely each participant/employee will create a final project in the form of a window or fence trellis with an ornamental design that has been taught during the training. As a result, the service team has provided skills to the employees of the friction welding workshop in making window and fence trellis ornament tools, including 90 degree angle metal welding guides, star-shaped tools, and zig-zags
Simulation Modeling of 140 MW CCGT Quality Indicators Based on DIN-VDI 4661 Standard Using Ebsilon® Professional Software Kaiway, Mickael Ruben; Giai, Agustinus; Griapon, Nourish Christin; Tosuli, Yohanis Tangke; Ranteallo, Obet Takke; Siregar, Samuel Parlindungan; Wanane, Yohanis Yulius; Pongsapan, Allo Sarira; Werdhani, Anastasia Sri; Palamba, Pither; Numberi, Johni Jonatan
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6614

Abstract

The operational efficiency of mid-capacity (140 MW) Combined Cycle Gas and Steam Power Plants (CCGT) remains underexplored concerning the DIN-VDI 4661 standard, which defines key quality metrics for energy systems. Addressing this gap is crucial for establishing standardized benchmarks to optimize performance and reduce energy losses. Existing studies mainly focus on Combined Cycle Gas Turbine (CCGT) units outside the 100–180 MW range and often do not explicitly follow DIN-VDI 4661, limiting efficiency comparisons and hindering targeted optimizations. This study simulates a 140 MW CCGT using Ebsilon® Professional software, incorporating DIN-VDI 4661 guidelines to assess eight quality indicators, including thermal efficiency, fuel utilization, and power-to-heat ratio. The model integrates gas and steam turbines, heat recovery, and auxiliary components, with input parameters validated against industry data. Energy balance analysis and sensitivity tests identified loss points. Results show a gas turbine thermal efficiency of 31.39%, steam turbine efficiency of 39.59%, and total system efficiency of 48.42%. However, significant energy losses (52% of input energy) were observed, mainly in gas turbines (87,000 kW) and steam turbines (56,000 kW). These findings highlight the need for design optimizations, such as improving heat recovery and turbine efficiency, to meet DIN-VDI 4661 benchmarks.
SOSIALISASI PENGUNAAN PAHAT POTONG INSERT BAGI WORKSHOP USAHA BUBUT DI KOTA JAYAPURA Ranteallo, Obet; Kaiwai, Ruben M.; Patabang, Djuarensi
Jurnal Abdi Insani Vol 12 No 7 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i7.2610

Abstract

The machining industry, particularly lathe workshops, plays a vital role in supporting the manufacturing and machinery repair sectors in Jayapura City. However, many small-scale workshops still rely on conventional cutting tools due to limited knowledge and access to modern tool technologies such as insert cutting tools. Insert tools offer several advantages, including ease of insert replacement, longer tool life, and more precise and efficient cutting results. This community service activity aims to enhance the knowledge and technical skills of lathe workshop operators in Jayapura City through outreach and training on the use of insert cutting tools. Many local workshops still use conventional tools, which have limitations in terms of efficiency and cutting quality. Therefore, this program is designed to introduce modern, economical, and practical insert tooling technology. The method used involves an educational-participatory approach through lectures, demonstrations, hands-on practice, and interactive discussions. The program encourages active participation to ensure that knowledge of insert tool usage can be effectively applied in workshop operations. The results of the program show a significant improvement in participants’ understanding, with an average post-test score increase of 35% compared to the pre-test. Participants also expressed strong interest in adopting insert tools for their production processes. During the hands-on session, they were able to correctly operate and replace the insert tools. The discussions were lively, indicating high enthusiasm for the topics presented. Overall, this activity has had a positive impact on enhancing the technical capacity of small and medium-sized lathe workshops in Jayapura City.
Co-Authors Agustinus Agustinus Agustinus Giai AKBAR SILO Allo Sarira Pongsapan Costantinus Oei Costantinus Oei David Mangallo Endang Hartiningsih Endang Hartiningsih Enos Tambing Frans Robert Bethony Griapon, Nourish Griapon, Nourish Christin Haurissa, Calvion Jean Haurissa, Jusuf Johni J Numberi Joni Joni Karapa, Enos Manalu, Janviter Mangopo, Dultudes Maran Gultom Maran Gultom Marthen Liga Mickael Ruben Kaiway Oktavianus Kati Palamba, Phiter Patabang, Djuarensi Pither Palamba Pither Palamba Rombe Allo Rumar, Kristofel Safanpo, Apolo Samuel Parlindungan Siregar Selyus Rantepulung Siregar, Samuel Thobby Wakarmamu Thomas Pagasis Tosuli, Yohanis Tangke Wambrauw, Oscar O. Wanane, Yohanis Wanane, Yohanis Yulius Werdani, Anastasia Sri Werdhani, Anastasia Sri Yafet Bontong Yakobus Kariongan Yane Oktovina Ansanay