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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Mechatronics, Electrical Power, and Vehicular Technology Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Ilmiah Flash Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Community Development Journal: Jurnal Pengabdian Masyarakat Prosiding Seminar Nasional Pengabdian Kepada Masyarakat
Marthen Liga
Uviversitas Cendrawasih
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Other

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OPTIMISASI KAPASITAS KOMPONEN PEMBANGKIT LISTRIK HYBRID PV/WG MENGGUNAKAN ALGORITMA GENETIKA Julius A. Tanesab; Marthen Liga
Seminar Nasional Aplikasi Teknologi Informasi (SNATI) 2010
Publisher : Jurusan Teknik Informatika, Fakultas Teknologi Industri, Universitas Islam Indonesia

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Abstract

Penelitian ini bertujuan untuk menentukan kapasitas komponen pembangkit listrik hybrid PV/WG yang optimalsesuai dengan kondisi atmosfer dan kebutuhan beban listrik menggunakan algoritma genetika. Pada simulasi inidihasilkan jumlah komponen pembangkit listrik yang optimal dengan biaya sistem yang minimum tanpa terjadipelepasan beban (no rejection load) selama masa operasi 25 tahun. Tahap awal penelitian adalah mengetahuispesifikasi teknis, capital cost dan maintenance cost setiap komponen pembangkit listrik system hybrid PV/WG.Tahap kedua adalah memilih kombinasi komponen yang mampu memenuhi kebutuhan daya beban dengan dataintensitas cahaya matahari, kecepatan angin dan suhu selama satu tahun. Tahap ketiga adalah prosesoptimisasi hasil kombinasi yang lolos pada tahap kedua menggunakan algoritma genetika dan memilihkombinasi dengan biaya yang terendah. Hasil simulasi menunjukan bahwa algoritma genetika dapatdiaplikasikan untuk mengoptimisasi kapasitas komponen pembangkit listrik hybrid PV/WG dengan waktukomputasi sekitar 2 menit menggunakan bahasa pemrograman Delphi 7. Selain itu sistem pembangkit listrikhybrid PV/WG memiliki biaya yang lebih rendah dibandingkan dengan stand-alone PV ataupun WG.Kata Kunci : Algoritma genetika, hybrid PV/WG, intensitas cahaya matahari, suhu, kecepatan angin
KETERSEDIAAN WASTAFEL PORTABLE DI UNIVERSITAS CENDERAWASIH SELAMA PANDEMI COVID-19 Johni Jonatan Numberi Numberi; Bernathius Julison; Apolo Safanpo; Marthen liga; Patrick Fandy; David Mangallo; Eka Irianto Bifnitme; Theresia Wuri; Helen Wayangkau; Annisa Novita Sari
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol 2 (2021): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

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Abstract

Abstract In order to implementing the 5 health protocols (washing hands, wearing masks, keeping distance, staying away from crowds and reducing mobility) during the current COVID-19 pandemic, the Chancellor of Cenderawasih University issued a circular stating that hand washing equipment on campus must be available as soon as possible and in sufficient quantity. Responding to the circular, the Faculty of Engineering, University of Cenderawasih formed a team to produce 7 units of Portable Wash Basin. The seven units are placed in the office of the Chancellor of Cenderawasih University and the Dean of Engineering Faculty. When producing Portable Wash Basin, the team involved several students. Student involvement is deemed necessary, so that students can produce their own Portable Wash Basin. The ability to produce these Portable Wash Basin is expected to be a driving force for students to become entrepreneurs. Abstrak Dalam rangka melaksanakan protokol kesehatan 5M (mencuci tangan, memakai masker, menjaga jarak, menjauhi kerumunan dan mengurangi mobilitas) pada masa pandemi COVID-19 sekarang ini, Rektor UniversitasCenderawasih menerbitkan surat edaran yang menyatakan bahwa alat pencuci tangan di lingkungan kantor universitas harus tersedia dalam jumlah yang cukup. Menanggapi surat edaran tersebut, maka Fakultas Teknik Universitas Cenderawasih membentuk suatu tim untuk memproduksi 7 unit alat cuci tangan Wastafel Portable. Ketujuh unit tersebut diletakkan di sekitar lingkungan kantor Rektorat Universitas Cenderawasih dan Dekanat Fakultas Teknik. Pada saat memproduksi alat cuci tangan tersebut, tim melibatkan beberapa mahasiswa. Keterlibatan mahasiswa dipandang perlu, agar selanjutnya mahasiswa yang bersangkutan dapat memproduksi sendiri Wastafel Portable tersebut. Kemampuan untuk memproduksi alat tersebut diharapkan dapat menjadidorongan agar mahasiswa mau berwirausaha.
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.
Kajian Potensi Angin Laut Sebagai Sumber Energi Terbarukan Pembangkit Listrik Pulau Kecil di Pesisir Utara Provinsi Papua Johni Jonatan Numberi; Samuel P. Siregar; Tiper K. M. Uniplaita; Rombe Allo; Anastasya S. Werdhani; Joni Joni; Pither Palamba; Marthen Liga; Theresia W. Oktaviani; Matius R. Manalu
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 2 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i2.4920

Abstract

Papua province has nine small islands that are inhabited, but there is no access to electricity on these islands. The solution is the use of sea wind as a source of energy for a small power plant. This study aims to determine the potential of sea wind as an alternative source of electrical energy on the north coast of Papua Province. Data Measurement is carried out using an HP-866B anomometer on a hill near the coast to maximize the sea wind. There are two methods used in this research: the minimum-maximum value to determine the wind speed range and linear regression to determine the distribution pattern of the wind. The range of the sea wind is 0.2–6.18 m/s. If the minimum speed is limited to 1.6 m/s, then the range of kinetic energy is 5.59–322.22 Joules/s, mechanical power is 5.59–322.22 Watts, and actual power is 0.57–33.13 Watts. Meanwhile, the pattern shows that the sea wind from the north coast of Papua Province blows with two trends: constant and increasing, specifically in the afternoon and evening. Based on that, the development of a wind power plant on the north coast of Papua Province can be carried out using a multi-turbine system to increase the actual power that can be obtained.
Desain Turbin Pelton Kapasitas 26 kW pada Pembangkit Listrik Tenaga Mikrohidro (Studi Kasus: Kampung Nehibe) Evenly Evenly; Pither Palamba; Marthen Liga; Johni Jonatan Numberi; Endang Hartiningsih; Thobby Wakarmamu; Tiper K. M. Uniplaita
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 2 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i2.5126

Abstract

The need for electrical energy in Nehibe village is currently increasing along with the increase in population and new households. The demand for electricity in this village reaches 18 kW, with an average power per household of 450 VA. The problem is that Hachakwa Nehibe Micro Hydro Power Plant (PLTMH), which is very close to the village, has a capacity of only 10 kW. Based on that problem, this study aims to design a peltor turbine with two nozzles for the new 26 kW PLTMH. This power plant uses the water from the Tena Mroway and Yora Mroway rivers, which are located 2 km from the end of the village, as a new source of energy. This design of the turbine is based on the mathematical equations, measurement data of the head, and the flow of the rivers. This research shows that the Pelton turbine with two nozzles (nj), 0.032 meters of jet diameter (Dj), 0.330 meters of runner diameter (Dr), 0.096 meters of bucket diameter, and 21 buckets can produce 26 kW of power with 60 ltr/sec of river flow and 77 meters of head height. This specialization can be used to develop the new PLTMH in Nahibe Village.
OPTIMALISASI KEAMANAN DATA DENGAN PROTOKOL SSL DI LINGKUNGAN CLOUD COMPUTING Liga, Marthen; khaliq, idham
Jurnal Ilmiah Flash Vol 10 No 1 (2024)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/flash.v10i1.1278

Abstract

Penelitian ini bertujuan untuk mengevaluasi efektivitas protokol Secure Socket Layer (SSL) dalam meningkatkan keamanan data pada cloud computing. Metode yang digunakan meliputi pendekatan dasar dengan analisis laboratorium, di mana data dikumpulkan melalui studi pustaka dan simulasi jaringan. Hasil penelitian menunjukkan bahwa implementasi SSL secara signifikan meningkatkan keamanan data yang ditransmisikan dan disimpan dalam lingkungan cloud computing. Semua paket data yang diuji berhasil terenkripsi dengan konsistensi yang tinggi, menunjukkan keandalan sistem. Penelitian ini juga mengidentifikasi beberapa tantangan dalam implementasi SSL, termasuk kompatibilitas protokol dan kinerja sistem, serta memberikan solusi untuk mengatasi masalah tersebut. Kesimpulan dari penelitian ini menegaskan bahwa SSL adalah komponen krusial dalam desain sistem keamanan data yang efektif. Temuan ini memberikan panduan praktis bagi praktisi IT untuk mengimplementasikan SSL secara optimal dan menginspirasi penelitian lebih lanjut untuk mengeksplorasi kombinasi SSL dengan mekanisme keamanan lainnya. Dengan demikian, adopsi teknologi SSL dapat menciptakan lingkungan cloud yang lebih aman dan andal, melindungi data sensitif dari ancaman siber yang terus berkembang.
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.
Optimization of Savonius Turbine Performance with Variations in Blade and Shaft Spacing on the Coast of Sarmi Regency, Papua Province Numberi, Johni Jonatan; Joni; Allo, Obed Rante; Griapon, Nourish C.; Ansanay, Yane A.; Ramandei, Lazarus; Wanane, Wilfriedf; Allo, Rombe; Manalu, Janviter; Safanpo, Apolo; Hartiningsi, Endang; Liga, Marthen; Karapa, Enos; Lefaan, Yosef; Setiadji, Prihananto; Innah, Herbert
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.v6i2.6587

Abstract

The use of wind energy as one of the producers of electrical energy is done by converting mechanical energy into electrical energy from wind turbines, one of which is the savonius wind turbine. Savonius wind turbines in use are able to work at low wind speeds. This study aims to evaluate the potential of wind energy that can be generated by optimization in savonius wind turbines by measuring the power generated by varying the gap distance between Balde and turbine shafts and analyzing the most optimal power as a source of power generation on the coast of Sarmi Regency, Papua Province. The analysis method in this study is field surveys, wind speed measurements, power optimization, BHP and tool efficiency carried out with variations in the distance between the blade and turbine shaft, namely 5 cm, 10 cm and 15 cm. The results of this study stated that the most optimal and stable results on the power generated by the turbine as well as the BHP value and the best tool efficiency were a distance variation of 15 cm with an average power value produced (P0) of 15.55 Watts, an average BHP value of 0.56 Watts and an average efficiency value of 7.59%.
Application of Solar Cell on Organic Waste Shredding Machine for Compost Fertilizer Production Especially Manure from Pig Farms: A Case Study in Sustainable Energy Development Liga, Marthen; Sampe, Aris; Lefaan, Yosef; Oktaviani, Theresia Wuri; Khaliq, Idham
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 10 No. 4 (2024): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v10i4.30261

Abstract

Organic waste management in Indonesia faces significant challenges due to the high greenhouse gas emissions produced. In 2020, greenhouse gas emissions from waste management in Indonesia especially the waste sector contributes around 3.2% of total global emissions. The use of organic waste shredders is one solution to minimize waste volume; althought still heavily rely on conventional energy, which is not environmentally friendly. This study aims to evaluate the implementation of solar photovoltaic (PV) technology in organic waste shredding machines to enhance energy efficiency and reduce environmental impacts. An experimental approach was used in this research. Data were collected through measurements of energy generated by the solar cells, energy consumed by the machine, and the organic waste shredding output processed into compost fertilizer. The results showed that use of solar cells could generate an average of 5.8 kWh of energy per day, with machine energy efficiency reaching 72%. Compared to conventional energy, the use of solar cells increased the shredder machine's productivity to 25 kg/hour and reduced greenhouse gas emissions by up to 70%. Additionally, machine operating time increased by 20% compared to machines using conventional energy.  This increase is due to the solar cell technology itself. In conclusion, application of solar cell technology in organic waste shredders not only improves operational efficiency but also significantly contributes to carbon emission reduction. The research  contribution is to offer concrete solutions that support the achievement of national and global carbon emission reduction targets, as well as creating a waste management model that can be applied in various regions in Indonesia and the world.
Optimizing bioethanol from sago dregs for Honai burner stoves: A case study in Papua Numberi, Johni Jonatan; Uniplaita, Tiper Korneles Muwarberto; Suwandi, Agri; Siregar, Januar Parlaungan; Ekayuliana, Arifia; Joni, Joni; Palamba, Pither; Liga, Marthen
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 16, No 1 (2025)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/j.mev.2025.1053

Abstract

Indonesia harbors considerable prospects for bioethanol fuel generation. Underscoring the imperative for establishing optimal fuel concentrations and appropriate burners to facilitate sustainable energy alternatives; this study endeavored to identify the optimal bioethanol concentration sourced from sago waste for application in Honai burners, evaluating the resultant flame output for domestic energy in Papuan custom houses. This analysis adopted an integration of pre-experimental frameworks along with experimental ones. In the early trial stage, concentrations of bioethanol were thoroughly examined concerning low heat value (LHV), specific gravity, viscosity, gas chromatography, and Fourier transform infrared (FTIR) analysis to identify the best fuel characteristics. Following this, the experimental phase assessed flame characteristics, encompassing temperature, fuel mass flow rate, and emissions from combustion gases within the Honai burner. Pre-experimental findings suggest that an 80 % bioethanol concentration is ideal for the Honai burner, displaying a viscosity of 1.03 cP, a density of 0.82 g·L⁻¹, a gas chromatography content of 61.04 %, an LHV of 16.166 MJ/kg, and a heat release rate of 140 kW·m⁻². The experimental phase indicates that a 14-hole burner oriented at a 45° angle yields optimal performance, achieving stable flame temperatures between 480 °C and 750 °C with a fuel flow rate of 60 mL·min⁻¹. Analysis of combustion gases indicates minimal emissions, with carbon monoxide (CO) registering at 0.01 %, carbon dioxide (CO₂) at 0.2 %, and hydrocarbons (HC) at 27 ppm. In summary, this study offers a feasible approach to addressing energy challenges, meeting demand, enhancing accessibility, ensuring availability, and promoting regional energy autonomy for Papuan households in remote locales through the utilization of bioethanol derived from sago dregs in Honai burner cooking devices.
Co-Authors Agustinus Giai AKBAR SILO Allo Sarira Pongsapan Allo, Obed Rante Anastasya S. Werdhani Annisa Novita Sari Bernathius Julison Costantinus Oei David Mangallo Ekayuliana, Arifia Endang Hartiningsih Endang Hartiningsih Evenly Evenly Griapon, Nourish Griapon, Nourish C. Hartiningsi, Endang Herbert Innah Johni J Numberi Jonatan Numberi, Johni Julius A. Tanesab Karapa, Enos khaliq, idham Lazarus B. Ramandey, Lazarus B. Lefaan, Yosef Manalu, Janviter Mangopo, Dultudes Maran Gultom Matius R. Manalu Mickael Ruben Kaiway Patabang, Djuarensi Patrick Fandy Pither Palamba Pither Palamba Purwoko, Agus Ranteallo, Obet Rombe Allo Rumar, Kristofel Safanpo, Apolo Sampe, Aris Samuel Parlindungan Siregar Selyus Rantepulung Setiadji, Prihananto Siregar, Januar Parlaungan Theresia W. Oktaviani Theresia Wuri Theresia Wuri Oktaviani Thobby Wakarmamu Tiper K. M. Uniplaita Uniplaita, Tiper Korneles Muwarberto Wambrauw, Oscar O. Wanane, Wilfriedf Wanane, Yohanis Wayangkau, Helen Giandita Werdani, Anastasia Sri Yakobus Kariongan Yane Oktovina Ansanay