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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi Journal of Renewable Energy and Mechanics TEKNIKA Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi KOPEMAS Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat
Slamet Wiyono
Universitas Sultan Ageng Tirtayasa
Religion Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Solar Energy Integration for Liquid Palm Sugar Processing in Rural Home-Industry Wahyu Herwanto; Erwin; Ni Ketut Caturwati; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9450.2

Abstract

This study explicitly aims to evaluate the technical performance and feasibility of a photovoltaic (PV)–battery system in supplying the energy requirements of a liquid palm sugar production machine for rural home-industry applications. Electricity instability in rural areas often disrupts production activities, and although previous studies have demonstrated the potential of solar energy, real-world evaluations for palm sugar processing remain limited. In this research, two 565 Wp solar modules integrated with a 2.2 kW inverter and a LiFePO₄ battery were experimentally tested under actual operating conditions. Real-time data of PV output, irradiance, load demand, and battery condition were recorded. The results show that the PV system consistently supplied 950–1050 W under clear skies and 600–800 W during cloudy conditions, while the battery maintained a stable state of charge (SoC) of 71–85%, ensuring uninterrupted operation. Daily PV energy generation (4.2–4.6 kWh) exceeded load consumption (3.2–3.6 kWh), confirming a positive energy balance. Overall, the system demonstrated stable and reliable performance, indicating that PV–battery integration is feasible for rural MSME-scale liquid palm sugar production.
Process Performance of the Arenga Sap Vacuum Evaporator using a Solar Panel as a Single Power Source Daman Huri; Erwin; Hendra; Slamet Wiyono; Iqbal Maulana
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 8 Number 1 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i1.9468

Abstract

Traditional processing of Arenga sap still faces significant challenges, particularly long heating duration and high energy consumption. This study aims to evaluate the performance and energy efficiency of a solar-powered vacuum evaporator for the concentration of Arenga sap. The solar energy system consists of monocrystalline panels, an MPPT charge controller, a deep-cycle battery, and an inverter as the primary power source for the vacuum pump and induction heater, while thermal insulation is applied to minimize heat loss during evaporation. The performance test was conducted using 40 kg of fresh Arenga sap under a vacuum pressure of –0.71 to –0.73 bar and an operating temperature of 34–41°C for 150 minutes, resulting in 1.10 kg of evaporated mass. Based on the corrected and consistent dataset, the evaporation rate was calculated as 0.44 kg/hour, and the energy analysis using the latent heat of vaporization yielded an overall system efficiency of 83%. The novelty of this research lies in the implementation of a fully solar-powered low-pressure vacuum evaporator equipped with thermal insulation to enhance thermal stability. The findings indicate that this system can operate independently and offers a practical solution for small-scale Arenga sap producers, especially those located in remote or off-grid areas.
Perancangan Permanent Magnet Synchronous Generator Sultan Wind Turbine V-5 Muhammad Irfan; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 3 Nomor 2 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i2.2055

Abstract

Wind is an inexhaustible source of energy so that the use of wind energy change systems will have a positive impact on the environment. Sultan Wind Turbine is a vertical axis wind turbine called the Vertical Axis Wind Turbine (VAWT). Synchronous generator is a machine that converts mechanical energy into electrical energy. Permanent magnet synchronous generator (PMSG) is a generator that uses permanent magnets to generate an air gap field instead of using an electromagnet. The purpose of this study is to design a 100 W PMSG generator for Sultan Wind Turbine using the MagNet infolytica software, then the results of looking for simulations at various speeds and various loads, after that to determine the value of the output power and efficiency at each loading and RPM. The design of this generator is the first design that is adapted to previous research where this design will optimize the simulation of previous designs that were applied to the Sultan Wind Turbine v-5. A method for designing a permanent magnet synchronous generator simulation of the sultan wind turbine which will be tested in developing its performance using the J.R. Handershot. In this design using MagNet Infolytica software to find the values ​​of Voltage and Current along with Torque obtained from simulations with the finite element method, then data processing is carried out in Excel to find the value of output power and efficiency. The results obtained in this study are by changing the geometric shape. able to produce with a rotating speed of about 100 rpm to 150 rpm at a load of 5 ohms, namely 125, 86 Watt to 231.59 Watt. The average DC voltage is 33.5 volts, the average DC current is 6.65 Ampere, the torque is 23. 24 Nm, the input power is 365.14 Watts, the output power is 231.59 Watts and the efficiency ranges from 58% to 79%.
Potensi Energi Angin pada Sisi Siku Atap Gedung Tinggi Wildane Aryabathi; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 3 Nomor 2 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i2.2304

Abstract

Wind is moving air caused by the earth's rotation and also because of the difference in air pressure around it. The wind flows that occur include laminar flow and turbulent flow. Judging from the effect of spreading its direction, the wind that passes through a building, its flow will split into horizontal and vertical axes and pass along the geometry and structure of the building. This happens because the wind speed increases due to the increased wind pressure along the side of the building. Departing from this hypothesis, this research was conducted to compare the velocity potential on the angle side of the building roof with the speed at the top of the building (Rooftop) as a starting point for the development of new renewable energy engineering, especially wind energy. This experiment was conducted at the Dean Building of the Faculty of Engineering, Sultan Ageng Tirtayasa University, Cilegon, Banten. After conducting experiments with reference to the International Electrotechnical Commission (IEC) 61400-12-1 standard, this research found that on the angle side of the building the average and maximum velocity are higher than those on the roof of the building, also the wind energy potential is higher, amounting to ≥20.94%. In terms of Daily Wind Energy Potential, the elbow side of the building is proven to be more efficient with an increase in efficiency of 42.2%.
Uji Performa Sudu Turbin Berbahan Polimer Serat Karbon Wisnu Kusuma Whardana; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.2942

Abstract

Sultan Wind Turbine is a vertical type wind turbine researched by New Renewable Energy Lab which is used as development for wind energy utilization. In this wind turbine, there are problems in the form of blade resistance which is not strong enough to withstand wind velocity when the wind blows reaches 4 m/s. The blade, which is one of the parts that have the highest liability on the turbine, can be improved in terms of performance and their overall strength. The blade material which currently used is fibreglass, and Styrofoam can be substituted using a better material to improve its performance. Carbon fiber and ABS filament can be substituted as a blanket and airfoil to be used as materials for manufacturing new blades. This research will focus on improvised blades in terms of performance and strength. With an experimental and quantitative approach, the data obtained from the blades that have been improvised with carbon fiber and ABS filament, resulting in blades that are superior from their predecessors.
Karakterisasi Performa Genset Diesel 5 kW menggunakan Syngas Sekam Padi dengan Variasi Pembebanan Restu Ferdinandsyah; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.2943

Abstract

With the decrease in world oil reserves, energy savings have begun to be launched in almost all countries of the world. Indonesia has now become one of the crude oil importing countries, so efforts are needed to reduce dependence on oil and gas fuels. The sustainability of biomass gasification technology, especially in Indonesia, is highly guaranteed because of the abundant availability of biomass in Indonesia. The purpose of this study is to determine the performance of a 5 kW diesel generator against variations in loading with diesel fuel. The second is to know the performance of a 5 kW diesel generator against variations in loading with diesel fuel and rice husk syngas. Data collection on the performance characterization of the 5 Kw diesel generator set from syngas rice husks against variations in loading was carried out at the New Renewable Energy Engineering Laboratory. The loading carried out in this study was using a 5200 Watt halogen lamp. The power used in this study is only up to a maximum of 3200 Watt. The test result shows that the power generated by the generator is greater when using diesel fuel compared to using a mixture of diesel fuel with syngas. The value of the generator power for each loading variable increased when using low electrical load and decreasing when using high electrical load.
Rancang Bangun Smoke Generator pada Kecepatan Angin Rendah dengan Wind Tunnel Rangkaian Terbuka Arief Mukhlisin; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 4 Nomor 1 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.2944

Abstract

Flow Visualization is the process of making the physical flow of a fluid visible. The air fluid used is transparent, so the flow pattern must be shown by several special methods. There are three methods for visualizing flow: surface flow visualization, particle tracking method, and optical method. Turbulence is one of the most important subjects related to testing the test section in a wind tunnel, at different wind speeds turbulence levels and other flow quality parameters must be kept as close as possible to free flow conditions. The flow visualization test is carried out using a slow motion camera at speeds of 1 m/s, 2 m/s, 3 m/s, 4 m/s and 5m/s which will form a fluid flow in the form of lines of smoke coming out of the nozzle holes inside. Test section. From the research results, the authors can conclude that the flow obtained forms a laminar flow and good suction power from various wind speed variables.
Analisis Pengaruh Penambahan Passive Grid Terhadap Turbulensi pada Wind Tunnel Skala Kecil: Passive Grid Addition Effect on Turbulence Analysis in a Small-Scale Wind Tunnel Bima Heska Putra; Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.4180

Abstract

One of the problems encountered by a laboratory with a small-scale wind tunnel facility is that the wind tunnel can only produce limited wind speed to simulate fluid behavior that passes through a tested object. This problem caused the laboratory to be unable to analyze fluid behavior that passed through a tested object. In that case, scale modeling to analyze fluid behavior at a certain speed without having to reach the actual speed is needed. The purpose of this research is to prove the passive grid addition effect on turbulence in a small-scale wind tunnel. The test is done by capturing smoke movement through the test section with and without a grid. Then analyze the collected data with SynthEyes software. The wind speed variation used in this research is between 0.5 and 6.0 m/s. The result of this research is that the smoke flow characteristic in a wind tunnel without a grid tends to be laminar flow, and the smoke flow in a wind tunnel with a grid tends to be turbulence flow. Smoke flow characteristics with a grid are still too far from smoke flow characteristics without a grid with the highest speed variation.
Design of Wind Speed Measurement System in Wind Tunnel Based on Pitot Tube Yudha Nurfauzi Nugraha; Erwin Erwin; Slamet Wiyono
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 1 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i1.5476

Abstract

In the current era, the development of science in all aspects continues to change. The use of wind at this time is necessary for the efficiency of the energy used. The wind speed research method for this study utilizes experimental laboratory methods, specifically employing a Pitot tube measuring instrument to collect wind speed data. From the wind speed data obtained using a frequency of 25–50 Hz, there is only a slight difference between readings from a testometer with a pitot tube and only at frequencies of 39 Hz and 43 Hz, which have a visible difference. The graph indicates that the research was successful by comparing the readings on the testometer.
Co-Authors A Milandia Agus Pramono Ainun Najib Andree Saylendra Anriani, Nurul Ari Wibowo Arief Mukhlisin Bima Heska Putra Daman Huri Edwin Prasetya Erny Listijorini Erwin Erwin Erwin Erwin Erwin Fendi Ferdiansyah Hendra Hilmy Maulana Yusuf Iman Saefullah Imron Rosyadi Iqbal Maulana Kurnia Nugraha M Imansyah Miftahul Jannah Muhamad Rizki Mutaqien Muhammad Iqbal Muhammad Irfan Mulyaningsih, Asih Ni Ketut Caturwati, Ni Ketut Restu Ferdinandsyah Rina Lusiani Saefuloh, Iman Sartika, Nenden Suciyati Shofiatul Ula Syarif Abdullah Tarso Rudiana, Tarso Tuti Rostianti Maulani Ucu Wandi Somantri Wahyu Wahyu Herwanto Widodo Widodo Wildane Aryabathi Wisnu Kusuma Whardana Yudha Nurfauzi Nugraha Yusvardi Yusuf