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All Journal Jurnal Teknosains SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Semnastek International Conference on Coastal and Delta Areas R.E.M (Rekyasa Energi Manufaktur) Jurnal Rekayasa Teknologi Jurnal SOLMA Prosiding Seminar Nasional Teknoka Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL KAJIAN TEKNIK ELEKTRO Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Bantenese Jurnal Pengabdian Masyarakat SULUH: Jurnal Abdimas Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Motor Bakar : Jurnal Teknik Mesin Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Pengabdian Masyarakat Asia Jurnal Mesin Nusantara Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat DEVICE Jurnal Polimesin Metalik: Jurnal Manufaktur, Energi, Material Teknik
Oktarina Heriyani
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Religion Aerospace Engineering Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Pengaruh Variasi Jumlah Bilah Turbin Angin Sumbu Horizontal Dengan Airfoil AG 12 Terhadap Daya Deka Rama Ligustian; Oktarina Heriyani; Dan Mugisidi
METALIK : Jurnal Manufaktur, Energi, Material Teknik Vol. 2 No. 1 (2023): Metalik: Jurnal Manufaktur, Energi, Material Teknik
Publisher : Universitas Muhammadiyah PROF. DR. HAMKA Fakultas Teknik – Program Studi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/metalik.v2i1.12387

Abstract

Wind power plant is a new renewable energy, power plant that utilizes wind turbine rotation to convert wind energy into electrical energy. One of the modifications to the wind turbine that is done is to vary the number of blades. The results of variations in the number of blades are expected to increase the efficiency of wind turbines at certain speeds. In this research, we will vary the number of blades 3, 4 and 5 with an AG 12 airfoil assisted by the Q-Blade application for simulation and find out the results of calculations in graphical form. Variations are made at a minimum wind speed of 2 m/s to a maximum wind speed of 12 m/s. With a planned power coating of 500 watts assuming a turbine rotation of 400 rpm, using a horizontal axis wind turbine (TASH). With a minimum wind speed of 2 m/s, the variations in the number of blades 3, 4 and 5 have not been able to generate power because the turbine rotation factor is too fast at low wind speeds, while at a maximum wind speed of 12 m/s the power generated by the three blade variations 3, 4, and 5 are able to meet the planned power capacity of 500 watts. The highest efficiency is obtained in the variation of blade 4 with 0.453 at wind speed 8 with a power of 300.37 watts, then 0.37 in the variation of 3 blades at a speed of 7 m/s with a power of 164.28 watts, in the variation of blade 5 the highest efficiency is in the figure is 0.29 at a wind speed of 10 m/s with a power of 409.14 watts.
EFFECT OF CYLINDER SURFACE ROUGHNESS TO THE DISTANCE FORMATION OF VORTEX Heriyani, Oktarina; Mugisidi, Dan; Hilmi, Irfan
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 14 No. 2 (2020): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.94-98

Abstract

Reduction of cylinder surface resistance can be accomplished by modifying roughness. The surface roughness structure is one of the important parameters which greatly affects the flow of fluid through the cylinder surface. Fluid flow forms a vortex flow pattern with certain characteristics. Therefore, this study aims to analyze the characteristics and effects of fluid flow through the rough surface of the outer wall of the pipe with visualization using Particle Image Velocity (PIV). This research was conducted experimentally at the Faculty of Engineering, UHAMKA. The pipe surface roughness values varied were 0.648 µm and 1.699 µm. The length of the pipe used is 20 cm with a diameter of 2 inches. Measurements are made from the center of the pipe to a distance of 0.16 m. The results show that the surface roughness of the cylinder pipe affects the fluid flow characteristics where the formation of eddies is caused by the addition of the roughness value. The rougher the pipe surface is, the farther the vortex formation will be. The vortex formation closest to the pipe is a pipe with a roughness value of 0.648 µm at a distance of 0.04 m.
Training on Solar Cell Utilization for Edutourism Enhancement Rifky; Heriyani, Oktarina; Mugisidi, Dan; Ariyansah, Riyan; Fauzi, Herman
Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2025): Jurnal Pengabdian Masyarakat
Publisher : Institut Teknologi dan Bisnis Asia Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32815/jpm.v6i1.1784

Abstract

Purpose: This study article seeks to examine the efficacy of a training program centered on solar cell application to improve edutourism in Pulau Pari. The study seeks to tackle the issue of insufficient knowledge and skills in renewable energy within the local community and emphasize the importance of integrating sustainable practices in the tourism industry. Method: This investigation implements a mixed-methods approach. Quantitative data was gathered using pre- and post-training evaluations to assess the enhancement of participants' knowledge and skills. Qualitative data was acquired via interviews and observations to elucidate the individuals' experiences and perceptions. The data underwent analysis by descriptive statistics and thematic analysis. Practical Applications: The results of this study have practical implications for the tourism industry as a whole and for the local community of Pulau Pari. The outputs of the training program can guide the creation of analogous programs in other locations, fostering the implementation of renewable energy and sustainable practices in edutourism. The findings may also assist policymakers and tourist stakeholders in incorporating solar cell implementation into their strategy for sustainable tourism development. Conclusion: The study's results demonstrate that the training program on solar cell application for enhancing edutourism in Pari Island has successfully improved participants' knowledge and abilities in renewable energy. The program can enhance the island's sustainable development by diminishing reliance on traditional energy sources and fostering eco-friendly tourism habits. The findings highlight the importance of integrating renewable energy education and training into community-based tourism programs to promote sustainability and resilience against global environmental concerns.
Peningkatan Kompetensi Keterampilan Kejuruan Teknik Sepeda Motor Kepada Siswa SMK Bina Industri Agus Fikri; Avorizano, Arry; Dzikrillah, Achmad Rizal; Heriyani, Oktarina; Ariyansah, Riyan; Rayhan, Muhammad
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 4 No. 4 (2023): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN)
Publisher : Lembaga Dongan Dosen

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

Abstract

Tujuan pelaksanaan pengabdian masyarakat ini ialah untuk meningkatkan kompetensi keterampilan kejuruan siswa Sekolah Menengah Kejuruan (SMK) Bina Industri di bidang teknik sepeda motor. Permasalahan yang dihadapi adalah kurangnya pengetahuan dan keterampilan siswa dalam merawat dan memperbaiki sepeda motor yang semakin canggih. Workshop perawatan sepeda motor diimplementasikan sebagai solusi inovatif untuk mengatasi kendala tersebut. Metode penelitian menggunakan desain eksperimental prapostes dengan pendekatan kuantitatif. Program pengabdian melibatkan 60 siswa kelas XI TBSM 1,2,3 SMK Bina Industri, dengan tahap identifikasi kebutuhan, perencanaan program, pelaksanaan program, dan evaluasi. Data diperoleh melalui uji praktik dan tes tertulis sebelum dan sesudah program. Hasil penelitian menunjukkan peningkatan signifikan pada keterampilan praktik siswa sebesar 60%, dengan skor rata-rata meningkat dari 50 poin menjadi 80 poin. Pemahaman teoritis siswa juga meningkat, dengan skor rata-rata naik dari 60 poin menjadi 85 poin. Temuan ini konsisten dengan penelitian terdahulu yang mendukung efektivitas pendekatan berbasis proyek dan praktik dalam meningkatkan keterampilan siswa di bidang kejuruan. Kesimpulan penelitian menegaskan bahwa workshop perawatan sepeda motor berhasil mencapai tujuan meningkatkan keterampilan kejuruan siswa SMK Bina Industri. Workshop ini memberikan kontribusi positif dalam mempersiapkan siswa untuk memasuki dunia kerja, khususnya dalam industri sepeda motor yang terus berkembang.
KAJI EKSPERIMEN DAN SIMULASI PENGARUH SUDUT DOUBLE SEGMENTAL BAFFLE DAN LAJU ALIRAN FLUIDA PADA HEAT EXCHANGER JENIS SHELL AND TUBE PADA MESIN MAIN EXTRUDER TERHADAP KEBAIKAN PERPINDAHAN PANAS Safi'i, Muhamad; Suheri Kertosenjoyo2, Suheri; Nugroho, Agung; Susanto, Susanto; Farhan Putra Arya, M. Iqbal; Heriyani, Oktarina; Effendi, Yafid
Device Vol 14 No 1 (2024): Mei
Publisher : Fakultas Teknik dan Ilmu Komputer (FASTIKOM) UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/device.v14i1.6989

Abstract

Shell and Tube Heat Exchanger (STHX) is very important for its use in the industrial world which can support the continuity and success of the entire network process. Various kinds of research have been carried out to increase the heat transfer coefficient and effectiveness of Shell and Tube Heat Exchangers (STHX) both experimentally and by simulation. This research examines the increase in heat change coefficient and effectiveness of STHX with variations in baffle angles of 0°, 10°, and 20° with fluid mass flow rates of 2, 4, and 6 kg/s. As a result, STHX with a baffle angle of 0° has the largest heat change coefficient value than STHX with a baffle angle of 10° and 20° both during experiment and simulation, values ​​ranging from 4218 W/m²C and 4226 W/m²C at a baffle angle of 0° when the fluid flow rate is increased to 6 kg/s. Keywords: Shell and Tube Heat Exchanger, baffle angle configuration, double segmental baffle, total heat transfer coefficient, effectiveness, CFD (Computational Fluid Dynamics).
Enhancing seawater desalination performance using a vortex generator in a modified window air conditioner Nurkholid, Nurkholid; Mugisidi, Dan; Widodo, Widodo; Heriyani, Oktarina; Sulistiono, Ibnu
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.6110

Abstract

The growing demand for air conditioning systems has driven research into alternative applications, such as seawater desalination. This study evaluates the performance of a modified window air conditioner (WAC) integrated with a vortex generator for desalination. Experiments were conducted using R410A refrigerant under four conditions: closed container (CC), without vortex (WV), connected vortex (CV), and separated vortex (SV). Seawater was heated via the condenser to 55–60°C, controlled by a thermostat, and data was collected every five minutes over eight hours. The thermodynamic properties of R410A were analyzed using Refprop software to determine refrigeration effect (RE), compression work (CW), and coefficient of performance (COP). Results indicate that the SV configuration achieved the highest evaporation rate (5.01 kg) but led to a lower COP (3.91) due to increased condenser temperature and compressor workload. Conversely, CC yielded the highest COP (5.08) by stabilizing the evaporator air temperature and reducing compressor effort. These findings suggest that vortex generators enhance evaporation rates but reduce system efficiency. Further research is needed to optimize vortex generator configurations to improve desalination efficiency while minimizing COP reduction.
Impact of angle cap and water-filled blade modification on the output of overshot waterwheels Afandi, Rizki Afif; Mugisidi, Dan; Parwatmoko, Giri; Heriyani, Oktarina
Jurnal Polimesin Vol 23, No 2 (2025): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i2.6543

Abstract

The utilization of water resources as renewable energy through waterwheels presents an environmentally friendly alternative, however, its efficiency requires improvement through technological modification. This research investigates two design modifications: a 45° Angle Cap (AC) and a Water-Filled Angle Cap (WFAC), in comparison with a waterwheel without a Cap (WC). Experiments were conducted at discharges from 1 to 10 m³/h with a constant torque load of 0.05 N-m. The highest efficiency of 57.08% was achieved in the AC 45° configuration at 1 m³/h, generating 1.09 watts of power, while the WFAC 45° yielded the highest power output of 2.88 watts at 10 m³/h with an efficiency of 14.50%. Although increasing discharge generally led to higher power input, it was accompanied by a decrease in efficiency across all configurations. Among all three variations, WFAC 45° demonstrated superior performance at higher discharges, indicating its potential for enhancing the power and efficiency of overshot waterwheels. 
Video Editing Training Utilizing Capcut Application at SMKM 7 East Tebet: Pelatihan Editing Video Menggunakan Aplikasi Capcut di SMKM 7 Tebet Timur Oktarina Heriyani; Faldy Irwiensyah; Rifky; Dan Mugisidi; M. Mujirudin
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 6 (2024): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v8i6.19300

Abstract

The significance of video editing skills in conveying messages in the digital era has prompted the implementation of a training program at SMKM 7 Tebet Timur, focusing on the utilization of the CapCut application. This topic was selected to address the challenge of insufficient understanding and skills among students in applying video editing techniques, aligning with contemporary demands in visual communication. The training method encompassed material preparation, theoretical presentation, demonstration, hands-on practice, evaluation, and discussion. The evaluation revealed a notable improvement in the students' understanding and skills post-training, with average scores experiencing significant increments. The conclusion underscores the importance of a holistic approach in multimedia training and recommends further collaboration with higher education institutions. The training outcomes also fostered positive relations between SMKM 7 Tebet Timur and FTII UHAMKA. This training makes a tangible contribution to preparing students to meet the demands of an increasingly visually connected professional world.
TINJAUAN PUSTAKA: PERANCANGAN SISTEM PENDINGIN TERMOELEKTRIK BERTENAGA SURYA DAN RAMAH LINGKUNGAN Enrico Chiesa Virgianto; Oktarina Heriyani
Prosiding Seminar Nasional Teknoka Vol 10 (2025): Proceeding of TEKNOKA National Seminar - 10
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

The growing demand for environmentally friendly cooling technologies has encouraged the use of thermoelectric systems based on the Peltier effect as an alternative to conventional vapor-compression systems that rely on harmful refrigerants. This research focuses on designing a portable cooling device powered by solar-generated electricity to create an efficient and sustainable refrigeration solution. The system integrates solar panels, a battery, a TEC module, a heatsink, a coldsink, and cooling fans to ensure effective heat dissipation. Performance evaluation was conducted through three experimental tests by calculating the Coefficient of Performance (COP) and analyzing convective heat transfer using Reynolds number, friction factor, Nusselt number, and heat flux. The results show that solar intensity plays a key role in determining the electrical power supplied to the thermoelectric module, thus influencing its cooling performance. COP values varied across the trials, with the highest average value of 0.167944 recorded in the third test. Although its efficiency remains lower than that of vapor-compression systems, the prototype demonstrates that a solar-powered thermoelectric cooler can serve as an energy-efficient, refrigerant-free, and environmentally friendly portable cooling solution.
Analysis of Prototype Electric Car Chassis Construction using Aluminum Hollow 6061 Profiles using Inventor Software 2016: Analisis Bentuk Kontruksi Chassis Mobil Listrik Prototype Tipe Hollow Alumunium 6061 Menggunakan Software Inventor 2016 Muhammad Zahir Bahasyim; Riyan Ariyansah; Oktarina Heriyani
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.v5i2.4995

Abstract

Vehicles are a means of transportation. Most vehicles use fossil fuels as an energy source. Fossil fuels will run out, so electricity is used as a substitute. Electric fuel is environmentally friendly and does not emit pollution. Making a prototype electric car, one of which is preparing a design and simulating it using software. This study aims to find the best 6061 hollow aluminum chassis model through static analysis using Autodesk Inventor software with the finite element analysis (FEA) method. This study compares three chassis models, namely chassis patterns H, X, and Y, which will be subjected to a static load test of 900 N, including the driver's load of 600 N. The values obtained are von Mises stress, displacement, and the safety factor. The dimensions of the chassis are 2,160 mm by 750 mm by 500 mm, with a thickness of 2 mm. The results can be concluded: the H-pattern chassis is the best and easier to design compared to the X and Y chassis. This chassis has a von Mises stress value of 84.47 MPa, a displacement value of 0.89 mm, and a safety factor of 3.20. Based on these results, the model H chassis is safe.
Co-Authors Abdul Rahman Abdul Rahman Soleh Pohan Adittia Fajar Afandi, Rizki Afif Agus Fikri Agus Fikri Agus Fikri Ahmad Ramdhani, Ahmad Aji, Ikbal Prasetiyo Akbar Oktavian Akhiruddin Maddu Akhmad Rizal Dzikrillah Alamsyach, Rizky Aldi fadillah Ashar, Ilham Ariawan Atiqah Mutia Avorizano, Arry Cahyani, Regita Septia Choirul Prayoga Dan Mugisidi Deka Rama Ligustian Delvis Agusman Delvis Agusman Dimas Ramadhan Putra Dimas Ramadhan Putra Dwi ASTUTI Dzikrillah, Achmad Rizal Eddy Ramdan Eef syaifuloh Emilia Roza Enrico Chiesa Virgianto Fadhlurrahman Zaki Fahmi, Muhammad Idrokul Faldy Irwiensyah Farhan Putra Arya, M. Iqbal Faturahman, Hamdi Fauzi, Herman Fikri, Agus Firman Noor Hasan Hamdi Faturahman Hamdi Faturohman Hamzah, Arif Hangga Putra Prabawa Harry Ramza Hendi Saryanto Hilmi, Irfan Ikbal Prasetiyo Aji Imam Krismunandar Irfan Maulana Yusuf Jhav Sund Oktoricoento Luhung, Rizal Andi M Mujirudin M. Mujirudin M.Kom, Sugema Mohammad Mujirudin Mohammad Yusuf D Muhammad Ghiffar Sistani Muhammad Ramdani Muhammad Rayhan Muhammad Zahir Bahasyim Mujirudin, Mohammad N, Kevin Sigit Dwi Nofendri, Yos Nugroho, Agung Nunik Pratiwi Nurfadillah, Zaka Nurkholid, Nurkholid Oktavian, Akbar Oktoricoento, Jhav Sund Pancatatva Hesti Gunawan Pangestu, Anugrah Widhi Parwatmoko, Giri Ramadan, Hamdan Ramza, Harry Regita Septia Cahyani Reza Ferizal Akbar Rifky, Rifky Riyan Ariyansah Rizal Andi Luhung Rizky Alamsyach Rosalina Rosalina Rozaki, Syahrul Maulana Safi'i, Muhamad Sahrudin Sahrudin Sahrudin Sahrudin Sahrudin, Sahrudin Saputra, Muhamad Juli Sayuti, Adi Tegar Sistani, Muhammad Ghiffar Sofia Pinardi Soleh Pohan, Abdul Rahman Sugema Sugema M.Kom Suheri Kertosenjoyo2, Suheri Sulistiono, Ibnu Supardi Atisina Susanto Susanto Tegar Imaniar Kusnanto Victor Indra Wijaya Widodo Widodo Wijaya, Victor Indra Wirangga, Ristanto Yafid Effendi Yoga Aditya Yulikastomo yusuf, Ahmad Maulana Zaka Nurfadilah