Article Per Year (5 Year)
p-Index From 2020 - 2025
3.453
P-Index
This Author published in this journals
All Journal Mechatronics, Electrical Power, and Vehicular Technology Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN Musamus Journal of Electro & Mechanical Engineering Jurnal Gema Ngabdi SULUH: Jurnal Abdimas Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi G-Tech : Jurnal Teknologi Terapan Jurnal ELIPS (Ekonomi, Lingkungan, Infrastruktur, Pengembangan Wilayah, dan Sosial Budaya) Prosiding Seminar Nasional Pengabdian Kepada Masyarakat
Johni J Numberi
Magister Perencanaan Wilayah Dan Kota Universitas Cerderawasih
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 Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
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.
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.
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/

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.
Co-Authors Agnes Supraptiwi Rahayu Agustinus Agustinus Giai AKBAR SILO Akhmad Kadir Aleda Mawena Allo Sarira Pongsapan Allo, Obed Rante Amos Numberi Anastasya S. Werdhani Anne Sihombing Annisa Novita Sari Arifia Ekayuliana Arung Lamba Bahtiar Bahtiar Banda, Dionisius Desriadi Bernathius Julison Costantinus Oei David Mangallo Dewi Nurhidayah Edwin Ginting Ekayuliana, Arifia Elieser Numberi Endang Hartiningsih Endang Hartiningsih Enos Karapa Enos Karapa Evenly Evenly Evi Sinaga Fitrine Christiane Abidjulu Fred Andris Waroy Griapon, Nourish Griapon, Nourish C. Griapon, Nourish Christin Hartiningsi, Endang Haurissa, Calvion Jean Haurissa, Jusuf Hebert Innah Herbert Innah Johni Siep Joni Karapa, Enos Lazarus B. Ramandey, Lazarus B. Lefaan, Yosef Lekito, Hanro Manalu, Janviter Maran Gultom Marthen Liga Matius R. Manalu Mickael Ruben Kaiway Miftah Fariz Prima Putra Monika Gultom Oktaviani, Theresia W. Oscar Oswald O. Wambrauw Palamba, Phiter Patrick Fandy Pither Palamba Pither Palamba Prihananto Setiadji Prihananto Setiadji Purwoko, Agus Rante, Harmonis Ranteallo, Obet Remuz MB Kmurawak Rodhi Rusdianto Hidayat Rombe Allo Royend F. Samosir Rumar, Kristofel Safanpo, Apolo Samuel Parlindungan Siregar Samuel Piter Irab Selyus Rantepulung Setiadji, Prihananto Siregar, Januar Parlaungan Stephanus de Fretes Suparno Sutoro . Tery Wanena Theresia W. Oktaviani Theresia Wuri Thobby Wakarmamu Thomas Pagasis Tiper K. M. Uniplaita Tosuli, Yohanis Tangke Trajanus Laurens Jembise Uniplaita, Tiper Uniplaita, Tiper Korneles Muwarberto Untung Muhdiarto Wambrauw, Oscar O. Wanane, Wilfriedf Wanane, Yohanis Wanane, Yohanis Yulius Wayangkau, Helen Giandita Werdani, Anastasia Sri Werdhani, Anastasia Sri Wigati Yektiningtyas Yane Ansanai Yane Oktovina Ansanay Yos Wandik Yosef Lefaan