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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jurnal Sains dan Teknologi Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education JRTI (Jurnal Riset Tindakan Indonesia) Journal of Educational and Learning Studies
Arwizet Arwizet, Arwizet
Departemen Teknik Mesin Universitas Negeri Padang
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Analysis of Electrical Energy Consumption and Savings Potential at PT. Sawitech Manufacturing Workshop Through Energy Audit Method Erik Ardinata; Dori Yuvenda; Arwizet K; 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/tj50w131

Abstract

This study aims to analyze the electrical energy consumption profile at PT. Sawitech manufacturing workshop and office areas, identify equipment contributing most to total energy use, and calculate savings potential through energy audit method. The research used descriptive quantitative approach by directly measuring electrical load, observing equipment operation hours, and applying load factor values. Total annual energy consumption based on manual calculation was 68,745.63 kWh/year, while RETScreen Expert simulation yielded 71,673 kWh/year (4.08% difference). Energy Consumption Intensity (ECI) based on total area of 2,272 m2 was 30.25 kWh/m2/year, classified as Very Efficient according to SNI 6196:2011 and ESDM Ministerial Regulation No. 13/2012. The highest energy consumers were welding transformer (22,680 kWh/year), compressor (17,280 kWh/year), and large blower (1,999.2 kWh/year). Energy savings recommendations include replacing conventional welding transformer with inverter based unit, substituting large blowers with more efficient axial fans, upgrading lighting to LED, and replacing conventional AC with inverter AC. Implementation of these recommendations can reduce energy consumption by 8,518.6 kWh/year (11.8%) and save costs of Rp 9,013,754/year. Carbon emissions before savings measures amounted to 59.81 ton CO 2/year, decreasing to 52.40 ton CO 2/year after implementation, a reduction of 7.41 ton CO 2/year (12.39%). Payback period of total investment (Rp 105,130,400) is approximately 6.9 years
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.
Evaluating fuel-injection motorcycle service training effectiveness using the CIPPO model Aulia Rahman; Arwizet Karudin; Hasan Maksum; Eko Indrawan; Fadhillah Riski Aisyah Nasution
Journal of Educational and Learning Studies Vol 9, No 1 (2026): Journal of Educational and Learning Studies
Publisher : Global Econedu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32698/03332

Abstract

Objective: This study evaluated the Fuel-Injection Motorcycle Service Training Program at UPTD BLK Pasaman Barat using the CIPPO model. Methods: A qualitative evaluation design was employed through observations, semi-structured interviews, and document analysis involving program managers, instructors, participants, and industry stakeholders. Data were analyzed through reduction, display, and conclusion verification. Results: The program was relevant to community needs and supported by a competency-based curriculum and qualified instructors, although training facilities remained limited. All 16 participants (100%) completed the training, 11 (68.75%) obtained BNSP competency certification, and 6 graduates (37.5%) entered employment or entrepreneurship. Conclusion: The program was generally effective, but improvements are required in training facilities, certification access, industry partnerships, and graduate employment support
Studi Numerik Perpindahan Panas pada Tipe Shell and Tube Menggunakan CFD ANSYS di Unit PM II Indarung VI PT. Semen Padang Khairi Habib; Arwizet K; Remon Lapisa; Andre Kurniawan
Jurnal Sains Dan Teknologi | E-ISSN : 3063-9980 Vol. 3 No. 1 (2026): Juli - September
Publisher : GLOBAL SCIENTS PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze temperature distribution, the effect of oil inlet temperature variation on heat transfer effectiveness, and the performance agreement of a shell-and-tube   in the Roller Lubrication Raw Mill system of Unit PM II Indarung VI, PT Semen Padang. A quantitative approach was employed using numerical Computational Fluid Dynamics (CFD) simulation in ANSYS Fluent. The oil inlet temperature was varied at 50°C, 70°C, and 90°C, while the water inlet temperature and other operating parameters were kept constant. The simulated oil outlet temperatures were 46.74°C, 63.80°C, and 72.10°C, respectively. The   effectiveness values were 14.82%, 14.76%, and 28.87%. Validation against actual operating data resulted in relative errors of 0.24% for oil outlet temperature and 3.55% for water outlet temperature. These results indicate that the CFD model represents the operating condition of the   well. Increasing oil inlet temperature affects heat transfer rate and   effectiveness, with the highest effectiveness obtained at an oil inlet temperature of 90°C, reaching 28.87%.
Co-Authors - Primawati -, Nasrullah - A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdillah Irfan Abdul Aziz Abdul Habib Arrasyidi Desky Ade Habibbullah Adel Lia Mardiana Adriansyah Adriansyah Afdal Faisal Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Ahmad Arif Ahmad Rifai Sihombing Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Aqilvin Berliansyah Arafat, Andri Arafat, Andril Arief Juneirul Pratama Ariyanto, Dedi armizal yanriko Aryasandy, Nensy Asep Bunyamin Aulia Rahman Azel Rozandi Azmil Azman Bayu Rianto Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Carlen Muhammad Hendra Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Doni Saputra Dori Yuvenda Efendi, Defindo Eko Indrawan Elfizon Endri Rizki Anugrah Erdi, Putri Nurhalimah Erik Ardinata Erizon, Nelvi Erlanda, Rendi Esa Hafizul A Fachrur Rozi Fachry Novrianda Fadhillah Riski Aisyah Nasution Fahrendra, Aqsal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Felia Maresta Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Fretina Sari Giatman Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Haris Haris Hasan Maksum Hasanuddin WS Helga Yermadona Hendra Hendra Idra Putra Ika Parma Dewi Ikhsan Dani Nugraha Ikhsan, Ghufra Irfan Amir Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jimmi Zamora Jonni Mardizal Junil Adri Kandena Putra, Tegar Khairi Habib Khairuni Delfi Anisa Kresna Adi Prasetya Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Martias Martias Mega Risna Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Bayu Septian Muhammad Ihsan Muhammad Iqbal Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Naufal Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nogi Handepi Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Peng, Lim Hooi Primawati Primawati, Primawati Purnama, Andreadi Purwanto, Wawan Purwantono Purwantono Purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putra, Romi Putri Nurhalimah Erdi Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rano Hanif Rebi Okzama Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Reynaldy Pasaribu Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Agustian Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Robby, Muhammad Robert, Julio Ruzita Sumiati Ryan Ananda Simon Said Fuad Amry Salamuddin Ahmad Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Siswahyudianto Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Sukardi, Sukardi Supardi Supardi Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Veri Budiawan Arham Vicky Prasetyo Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zulvani Adha