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All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Didaktik : Jurnal Ilmiah PGSD STKIP Subang Teknomekanik Jurnal Vokasi Mekanika Journal of Engineering Researcher and Lecturer Journal of Innovative and Creativity
Andre Kurniawan
Universitas Negeri Padang
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Transportation Other

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Analysis of Energy Supply Substitution from a Diesel Power Plant System to a Solar Power Plant System Based on Capacity Design for the Office Load of PT XYZ in Karimun Regency, Indonesia Muhammad Iqbal; Andre Kurniawan; Arwizet K; Yolli Fernanda
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 3 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cz0ekp13

Abstract

The dependence of the office load at PT XYZ on Diesel Power Plants (DPPs) in a mini-grid electricity system creates the need for an alternative energy supply that is more efficient, reliable, and compatible with local solar potential. The present study aims to design and analyze the performance of a battery-based off-grid Solar Photovoltaic Power Plant (SPP) to independently supply office electricity demand by considering the load profile, photovoltaic module configuration, controller/MPPT converter, battery capacity, module orientation, and system losses. The method consists of daily load profile analysis, the use of Meteonorm meteorological data for the Sungailimau site, fixed module orientation with a tilt angle of 5° and an azimuth of 0°, and stand-alone system simulation using PVsyst V8.1.2. The proposed system consists of 200 Longi Solar modules rated at 560 Wp, with a total installed capacity of 112 kWp, The solar power system is designed in a modular configuration consisting of 4 PV blocks. Each block consists of 5 strings connected in parallel, with each string comprising 10 PV modules connected in series. The total system configuration consists of 20 strings., an MPPT converter-based controller, and a BYD Box Premium HVM 22.1 lithium-ion LFP battery storage system with 368,6 kWh of stored energy. The simulation results show 105.989 kWh/year of useful solar energy, 151.191 kWh/year of available solar energy, 49.213 kWh/year of unused energy, a performance ratio of 56,64%, a solar fraction of approximately 92,33%, and 1.856 kWh/year missing energy. 
Actual Performance Analysis of a Rankine Back Pressure System on a 1600 kW Turbine-Generator Unit at PT Kencana Sawit Indonesia Using Python Programming Muhammad Bayu Septian; Arwizet K; Yolli Fernanda; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 3 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/x2phe139

Abstract

The Palm oil mills require steam systems that can supply electricity and process heat at the same time. This study analyzes the actual performance of a Rankine back pressure system on a 1600 kW turbine-generator unit at PT Kencana Sawit Indonesia using Python programming. The study used field documentation, equipment nameplate data, turbine-generator logsheet data, and an assumed steam flow scenario of 21.0-26.0 ton/h because the boiler steam flow indicator was reported to show an over-range condition. The analysis was carried out by converting actual operating data into thermodynamic performance parameters, including generator load, steam rate, turbine efficiency estimation, power-only efficiency, and energy utilization tendency. The results show that the unit operated under partial load with an average generator output of 715.19 kW or about 44.70% of the 1600 kW nominal capacity. The average steam rate increased from 32.99 kg/kWh at 21.0 ton/h to 40.85 kg/kWh at 26.0 ton/h. The estimated turbine efficiency decreased from 43.45% to 35.10% as the assumed steam flow increased. The power-only efficiency remained low because the exhaust steam was not discharged as waste heat, but was used as process steam in the back pressure system. Python-based processing provides a transparent and repeatable approach for evaluating field logsheet data.
Analysis of Building Electrical Energy Consumption and Energy Saving Potential Using e-Quest Simulation with the Energy Efficiency Measures Method Rano Hanif; Arwizet K; Yolli Fernanda; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 3 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pk0n4n16

Abstract

This study presents a preliminary electrical energy audit of the Health Office Building of West Sumatra Province, aiming to determine the building's Energy Consumption Intensity (ECI), map the distribution of electrical loads, and identify Energy Efficiency Measures (EEM) through e-Quest building energy simulation. A descriptive-quantitative method was applied following the SNI 6196:2011 energy audit procedure and the ECI standard of Ministerial Regulation of Energy and Mineral Resources (ESDM) No. 13 of 2012. Primary data were obtained from direct field measurement of voltage, current, and power factor using a watt meter across 22 rooms on two floors (1,360 m2), supplemented by 12 months of PLN electricity billing data as secondary data. Building simulation was performed in the e-Quest Quick Energy Simulation Tool using Activity Area, Lighting, and Plug Loads parameters derived from the field measurements. The manual calculation yielded a total consumption of 78,337.13 kWh/year, corresponding to an ECI of 57.60 kWh/m2/year, validated against PLN billing data with a deviation of only 5.00%, placing the building in the "Very Efficient" category (threshold < 102 kWh/m2/year). Air-conditioning (AC) dominates consumption at 89.21%, far exceeding other equipment (6.65%) and lighting (4.14%). The e-Quest model produced 88,640 kWh/year, deviating 7.76% from PLN data. Among three EEM scenarios tested, AC-inverter retrofit yielded the largest saving (37.20%), followed by AC set-point adjustment from 22°C to 23°C (5.08%), while LED lighting retrofit produced the smallest saving (1.47%). These findings indicate that energy-conservation priorities should be directed primarily toward the air-conditioning system.
Co-Authors - Primawati Abdillah Irfan Abdul Aziz Akhmad Rais AM Mufarrih Ambiyar, Ambiyar Angga Hermawansyah Apri Wiyono Aprilla Fortuna Arafat, Andril Ardiansyah Syaputra Arwizet Arwizet Arwizet Arwizet, Arwizet Azel Rozandi Bahri Johan Tarigan Bangun Sukma Wijaya Budi Syahri Budi Syahri Bulkia Rahim Daffa Raihan Senthot Dani Harmanto Delima Yanti Sari Denisa Putri Jadenis Devky Meinaldi Fernanda Diki Afrianto Dori Yuvenda Egis Egis Eko Indrawan Erik Ardinata Fadhilah Fadhilah Fajri Ramadhan Farhan Rahmat Putra Fathi Aulia DZ Fauza, Anna Niska Febri Prasetya Felia Maresta Fitrah Qalbina Gusni Sushanti Irzal Irzal Islamimahdi Islamimahdi Jasman Jumrowi Lubis Kresna Adi Prasetya Krismadinata Krismadinata, Krismadinata Lilik Darwito M ZIKRA M. Chalid Kurnia Masnaini Alimin Mirta Widia Mochammad Haikal Moh. Nasir Hariyanto Muhammad Aulia Muhammad Bayu Septian Muhammad Djoni Bustan Muhammad Fadil Al Rahman Muhammad Habib Halmadid Muhammad Ihsan Muhammad Iqbal Muhammad Iqrha Muhammad Raihan Muhammad Ravi Albasyit Muhammad Rizki Anshari Muhammad Yasep Setiawan Mulianti Nanang Qosim Nanang Qosim Nelvi Erizon Nofri Helmi Nur Ichsan Abdillah Nurdin Hendri Ovi Marendah Purwantono Purwantono Putra, Randi Purnama Rachmadi Rachmadi Rano Hanif Refdinal, Refdinal Remon Lapisa Remon Lapisa Riezky Hidayattullah Rio Ramadhan Rizki Agustian Rudy Anarta Ryan Ananda Simon Sein Laer Yi Win Sri Haryati Sri Rizki Putri Primandari Susi Marisa Syahril Syahril Syamsul Bahri Biki Tarig Elshaarani Teuku Kamal Furqan Toto Sugiarto Usin Usin Wanda Afnison Waskito Welli Andriani Willy Hardi Vernando Willy Vernando Yolli Fernanda Yoszi Mingsih Anaperta Yudi Star Novsky Yufrizal Yufrizal Yus Donald Chaniago Zainal Abadi Zakki Fuadi Emzain Zulvani Adha