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All Journal Rekayasa Mesin Musamus Journal of Electro & Mechanical Engineering Jurnal Gema Ngabdi Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi G-Tech : Jurnal Teknologi Terapan Jurnal ELIPS (Ekonomi, Lingkungan, Infrastruktur, Pengembangan Wilayah, dan Sosial Budaya)
Johni J Numberi
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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 Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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ANALISIS REKLAMASI VENUE DAYUNG DI TELUK YOUTEFA KOTA JAYAPURA Fred Andris Waroy; Johni J Numberi; Janviter Manalu
Jurnal ELIPS (Ekonomi, Lingkungan, Infrastruktur, Pengembangan Wilayah, dan Sosial Budaya) Vol 4, No 3 (2021): Oktober 2021
Publisher : Magister Perencanaan Wilayah dan Kota Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jurnalelips.v4i3.1970

Abstract

The coastal area is one of the potential resources. The coastal area has the meaning of a transitional area between land and sea. According to Law No. 27 of 2007 Article 34 concerning the management of coastal areas and small islands, reclamation of coastal areas and small islands is carried out in order to increase the benefits and / or added value of coastal areas and small islands in terms of technical, environmental and socio-economic aspects. a research method consists of procedures and techniques that need to be carried out in a study. In connection with the coastal reclamation carried out in Youtefa Bay, Jayapura City, which is in the context of completing the 2021 PON in Papua Province. Jayapura City is the capital city of Papua Province which will be used as one of the places for the implementation of PON 2021 in Papua Province, so that several sports suggestions have been built in the city of Jayapura, one of which is the Rowing Venue facility built in Youtefa Bay, Jayapura City, this arena sports branch This research was conducted in Youtefa Bay (Holtekamp), administratively in the area of Jayapura City, Entrop Village, South Jayapura District. This infrastructure development is considered very important for the community because it can indirectly increase the living capital of those who live around the area. There needs to be extensive reforestation of mangrove forests that have been logged.
PENGARUH MODERNISASI PERTANIAN TERHADAP KEHIDUPAN SOSIAL EKONOMI MASYARAKAT DI KAMPUNG YANAMEK DISTRIK ABENAHO KABUPATEN YALIMO Johni Siep; Johni Jonatan Numberi; Arung Lamba
Jurnal ELIPS (Ekonomi, Lingkungan, Infrastruktur, Pengembangan Wilayah, dan Sosial Budaya) Vol 5, No 2 (2022): Juni 2022
Publisher : Magister Perencanaan Wilayah dan Kota Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jurnalelips.v5i2.2400

Abstract

Agriculture is part of the culture that was first developed by humans as a response to the challenges of survival which gradually became difficult due to the depletion of food sources in the wild due to the rate of human growth. In addition, agriculture as a system in human life aims to produce vegetable and animal materials including aquatic biota (water) by using natural and water resources effectively and efficiently in order to achieve the welfare of human life and the preservation of the carrying capacity of the environment. The results showed that the use of agricultural land from the aspect of meeting basic needs in the form of housing, clothing and food can be said to be high after the utilization of agricultural land. This can be seen from the number of people who have permanent housing in the sense that there has been rehabilitation of the floors and walls of the house. What used to be an earthen floor and clapboard walls, now has a cement or tile floor and the walls are made of walls or ceramics. Indeed, there are still respondents who do not have housing because housing has been provided by the relevant agency specifically for civil servants or teachers who are placed in schools that already have housing. Likewise, the fulfillment of clothing and food needs can be said to be very fulfilled
Kajian Efisiensi Pengering Gabah Dengan Energi Surya Johni Jonatan Numberi
G-Tech: Jurnal Teknologi Terapan Vol 6 No 2 (2022): G-Tech, Vol. 6 No. 2 Oktober 2022
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v6i2.2604

Abstract

Studi ini bertujuan untuk menentukan efisiensi pengeringan gabah dengan menggunakan cerobong dan kipas angin untuk menarik udara dari kolektor ke dalam ruang pengering. Penelitian ini dilakukan di Laboratorium Energi Terbarukan, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Cenderawasih, Jayapura. Sebuah alat pengering dibuat dengan menggunakan pelat seng berketebalan 0,2 mm sebagai kolektor, dan udara panas serta energi surya digunakan sebagai media pengeringan. Alat ini diharapkan dapat mengeringkan gabah secara cepat dengan tingkat pengeringan dan kadar air yang merata. Terdapat tiga variasi ketebalan gabah, yaitu 7 cm, 5 cm, dan 3 cm, dengan berat masing-masing 7 kg, 4,5 kg, dan 2,5 kg. Data yang terkumpul kemudian dianalisis untuk menentukan efisiensi pengering. Hasil penelitian menunjukkan bahwa waktu yang dibutuhkan untuk mengurangi kadar air gabah hasil panen dari 24,6% menjadi 13,5%-13,8% (kandungan air giling) adalah antara 4 jam hingga 6,5 jam dengan efisiensi antara 12,07% hingga 22,16% untuk alat yang menggunakan cerobong, dan antara 3,5 jam hingga 6 jam dengan efisiensi antara 11,18% hingga 21,49% untuk alat yang menggunakan kipas.
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.
Potensi Pemanfaatan Sumber Energi Alternatif Gas Metana untuk Pembangkit Listrik 3 MW Menggunakan Pemodelan Landgem (Studi Kasus: TPA Koya Koso Kota Jayapura) Royend F. Samosir; Johni Jonatan Numberi; Enos Karapa; Herbert Innah; Yane Ansanay; Prihananto Setiadji; 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.v5i2.5158

Abstract

The volume of waste will continue to increase with increasing time, population, and economic growth in a city, district, or province. The city of Jayapura, as the center of the economy of the land of Papua, is the same way. The Koya Koso TPA management system for Jayapura City is currently landfill control, where the waste that has been collected at the TPA is stockpiled using layers of soil so that the piles are increasing in number day by day and causing problems including air pollution by methane gas, CO2, and other gases and limited land, thereby reducing the age of TPA Koya Koso Jayapura City. This study aims to determine the potential content of methane gas by modeling it using Landgem software and the potential capacity of electrical energy that can be generated. The results showed that the potential content of methane gas generated from Landgem modeling is 13,134,026 m3/year, or 8,762 tons/year, resulting in a potential capacity of electrical energy of 2,797.22 kW, or 2.8 MW.
Mental Toughness Atlet Remaja: Sebuah Penguatan Dukungan Implementasi Kebijakan dalam Olahraga Prestasi Miftah Fariz Prima Putra; Untung Muhdiarto; Evi Sinaga; Sutoro Sutoro; Oscar Oswald O. Wambrauw; Fitrine Christiane Abidjulu; Samuel Piter Irab; Trajanus Laurens Jembise; Tery Wanena; Yos Wandik; Agnes Supraptiwi Rahayu; Monika Gultom; Wigati Yektiningtyas; Jhoni Jonatan Numberi; Remuz Maurens Bertho Kmurawak; Aleda Mawena; Akhmad Kadir; Rodhi Rusdianto Hidayat; Dewi Nurhidayah
Jurnal Gema Ngabdi Vol. 5 No. 3 (2023): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v5i3.369

Abstract

In competitive sports, various factors influence the outcome of the game. It is believed that the mental toughness dimension is an aspect that contributes greatly to sports achievement in practice. However, unfortunately the condition of mental aspects of teenage athletes in Papua is limited explored. Therefore, the purpose of this community service was to provide assistance for the local government of Papua Province, especially the Sports and Youth Division, in providing information on the mental toughness conditions of adolescent athletes at PPLP/D Papua. The activity was carried out in three stages, namely preparation, implementation, and reporting. The results of the service found that the confidence dimension appeared to be greater than the other dimensions, while the commitment dimension was the dimension with the lowest value.  For other dimensions such as positive cognition, constancy, and control were relatively in the middle. In general, the pattern of mental toughness of Papuan youth athletes appears disproportionate. Thus, mental coaching or training should provide to improve the mental quality of athletes
Unjuk Kerja Sistem Smart Grid Pada Plts Off-Grid 18 KWP di Kampung Abar, Sentani Stephanus de Fretes; Hebert Innah; Prihananto Setiadji; Johni Jonatan Numberi; Enos Karapa; Yane Ansanai
Musamus Journal of Electro & Mechanical Engineering Vol 5 No 02 (2023): Musamus Journal of Elektro & Mechanical Engineering
Publisher : Musamus University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mjeme.v5i02.5638

Abstract

Energi fosil masih menjadi sumber energi utama Indonesia. Bahan bakar pemium masih digunakan untuk kendaraan bermotor, solar masih digunakan untuk kendaraan dan industri, batubara masih digunakan sebagai bahan bakar PLTU, dan minyak tanah masih digunakan untuk kebutuhan rumah tangga, namun ketersediaan minyak bumi terus berkurang. Energi Baru dan Energi Terbarukan (EBT) adalah salah satu sumber energi yang dapat dikembangkan untuk memenuhi kebutuhan energi yang ramah lingkungan dan menjamin ketersediaan energi untuk masa mendatang. Dari tabulasi dan analisa data yang didapat pada PLTS off-grid terdapat berbedaan daya yang dihasilkan, grup 1 memiliki nilai rata-rata daya yang dihasilkan 928 watt dengan nilai PF rata-rata 75,76% dan grup 2 memiliki daya rata-rata sebesar sebesar 890 Watt dengan nilai PF rata-rata 68,93%, sehingga penurunan pada grup 2 dapat mempengaruhi nilai performa kinerja dari PLTS.
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.
CHARACTERISTICS OF COMBUSTION AND PHYSICAL PROPERTIES OF COFFEE GROUNDS AND SAGO PULP BRICKS WITH SAGO FLOUR BINDER Haurissa, Calvion Jean; Joni, Joni; Ranteallo, Obet Takke; Numberi, Johni J; Palamba, Phiter; Karapa, Enos; Haurissa, Jusuf
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.2139

Abstract

This study examines the production of briquettes based on agricultural waste from sago pulp and coffee grounds using natural sago flour as a binder, through a laboratory experimental approach. The analysis covers the physical and chemical characteristics, as well as the thermal performance of 3 cm cube-shaped briquettes. The results show that coffee pulp briquettes have the highest heat transfer rate (0.528 Watts) and the highest calorific value (5018 kcal/kg), indicating superior combustion efficiency compared to sago pulp briquettes (0.205 Watts; 4856 kcal/kg) and mixed briquettes (0.347 Watts; 4966 kcal/kg). These differences in characteristics were influenced by the composition of the materials, while the size of the briquettes affected the ignition time. Overall, all types of briquettes showed potential as an environmentally friendly alternative energy source based on local biomass.
Simulation Modeling of 140 MW CCGT Quality Indicators Based on DIN-VDI 4661 Standard Using Ebsilon® Professional Software Mickael Ruben Kaiway; Agustinus Giai; Nourish Christin Griapon; Yohanis Tangke Tosuli; Obet Takke Ranteallo; Samuel Parlindungan Siregar; Yohanis Yulius Wanane; Allo Sarira Pongsapan; Anastasia Sri Werdhani; Pither Palamba; Johni Jonatan Numberi
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.
Co-Authors Abda Abda Agnes Supraptiwi Rahayu Agustinus Giai AKBAR SILO Akhmad Kadir Aleda Mawena Allo Sarira Pongsapan Anastasia Sri Werdhani Arung Lamba Dewi Nurhidayah Endang Hartiningsih Endang Hartiningsih Enos Karapa Enos Karapa Evenly Evenly Evi Sinaga Fitrine Christiane Abidjulu Fred Andris Waroy Griapon, Nourish Haurissa, Calvion Jean Haurissa, Jusuf Hebert Innah Herbert Innah Johni Siep Karapa, Enos Manalu, Janviter Marthen Liga Mickael Ruben Kaiway Miftah Fariz Prima Putra Monika Gultom Nourish Christin Griapon Oscar Oswald O. Wambrauw Palamba, Phiter Pither Palamba Pither Palamba Pither Palamba Prihananto Setiadji Prihananto Setiadji Ranteallo, Obet Remuz MB Kmurawak Rodhi Rusdianto Hidayat Royend F. Samosir Rumar, Kristofel Safanpo, Apolo Samuel Parlindungan Siregar Samuel Piter Irab Selyus Rantepulung Stephanus de Fretes Sutoro . Tery Wanena Thobby Wakarmamu Tiper K. M. Uniplaita Trajanus Laurens Jembise Untung Muhdiarto Wambrauw, Oscar O. Werdani, Anastasia Sri Wigati Yektiningtyas Yane Ansanai Yane Oktovina Ansanay Yohanis Tangke Tosuli Yohanis Wanane Yohanis Yulius Wanane Yos Wandik