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All Journal Prosiding Seminar Nasional Unimus Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Agus Nuramal
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health

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Edukasi Pemakaian Masker dan Face shield dalam Mencegah Penyebaran Covid-19 Kepada Pedagang Pasar Panorama Kota Bengkulu Hendri Hestiawan; Agus Nuramal; A. Sofwan F. Alqap; Yossie Anggraeny M
Prosiding Seminar Nasional Unimus Vol 3 (2020): Optimalisasi Hasil Penelitian dan Pengabdian Masyarakat Menuju Kemandirian di Tengah P
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Covid-19 has infected millions of people around the world, including Indonesia. Market traders who interact with many people are very vulnerable to Covid-19 transmission. This activity aims to provide education and assistance to the traders at Panorama Market of Bengkulu City to comply with the health protocols set by the government, such aswearing masks and face shields, especially for outdoor activities. This activity was also followed by the distribution of masks and face shields to traders at Panorama Market so that they could be used in their daily trading activities. The educational method used participatory action research using lectures, discussions, questions and answers, demonstrations, posters and banners. This educational activity is a collaboration between the Engineering Faculty of Universitas Bengkulu, Community Health Center Jembatan Kecil and Sahabat Psikologi of Bengkulu City. Educational materials include the introduction of Covid-19 and health protocols in the form of wearing masks and face shields. The evaluation of the activity used a questionnaire sheet to find out the participants knowledge before and after being given education. The results of the activity showed that the education provided by the facilitator canincrease the knowledge of market traders about Covid-19 and health protocols in the form of wearing masks and face shields in an effort to prevent the spread of Covid-19. Participants knowledge of Covid-19 increased from 50% to 85%, while the importance of wearing masks and face shields increased from 60% to 90% after being given education.Keywords: Covid-19, Face shield, Health protocol, Market trader, Mask
PENGARUH AIR FUEL RATIO (AFR) TERHADAP EFISIENSI TURBIN GAS Rifki Sulthan; Angky Puspawan; Agus Nuramal
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 7 No. 2 (2023): Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v7i2.34064

Abstract

Gas turbine efficiency is an indicator to determine the performance of a generator. The greater the efficiency value of the gas turbine in a generator, the better the performance of the generator. One of the things that affect the value of the efficiency of a gas turbine is the air fuel ratio. Air Fuel Ratio (AFR) is the ratio of the amount of air and fuel in the combustion process in units of mass or volume. Air fuel ratio is a factor that affects the perfection of the combustion process in the combustion chamber. In the graphic image it can be seen that the lowest AFR values are on July 3 and 4 2022, when the gas turbine produces a loading of 20900 kW and 20100 kW with an AFR value of 39.76 unitless each. Whereas the highest AFR value is on June 28 2022 when the gas turbine produces a loading of 20780 kW with an AFR value of 40.68 unitless. The highest gas turbine efficiency value is on June 30, 2022, at a loading of 20,650 kW with a gas turbine efficiency of 83.3%. The lowest efficiency value is on July 2, 2022, at a load of 20,800 kW with a gas turbine efficiency of 81.05%. From the results of existing data processing and graphs, it can be seen that the value of the air fuel ratio and the efficiency of the gas turbine are inversely proportional, which means that when the value of the air fuel ratio decreases, the value of the efficiency of the gas turbine tends to increase. However, there are some deviations when the value of the air fuel ratio decreases, the efficiency of the gas turbine also decreases. Therefore it can be concluded that the value of the air fuel ratio affects the value of the efficiency of the gas turbine, however, the value of the air fuel ratio is not the only factor that affects the value of the efficiency of the gas turbine.
ANALISIS PRODUKSI LISTRIK DI PEMBANGKIT LISTRIK TENAGA MINIHIDRO (PLTM) Arif Rahman Hafiz; Agus Nuramal; Nurul Iman Supardi
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 6 No. 1 (2022): April 2022
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v6i1.25452

Abstract

Mini-hydro Power Plant (PLTM) is one of the hydroelectric power plants of choice where PLTM utilizes water energy which has a flow capacity that is not too large. The Padang Guci PLTM with a capacity of 3x2 MW is located in the Air Padang Guci River, under the auspices of PT. Sahung Brantas Energi in collaboration with the Kaur district government to improve electrical energy services to the community. The electrical energy produced by the Padang Guci PLTM is highly dependent on the flow capacity of the Padang Guci river. The data collection process is carried out to retrieve data about voltage, current, time, and electricity production generated by the generator. The electricity produced by the generator can be seen in kWh in the control room. Data on electricity production, current, and voltage on the kWh meter are then inputted into the computer in the operator's room. Every half hour the data is recorded in the table, the daily data table will be entered into excel and will be inputted into the monthly data. Total electricity production during July 2021 is 1,444,252 kWh and the average daily electricity production is 46,588.77 kWh. With the highest daily electricity production, which is 77,644 kWh, the main cause of the increase in electricity production is due to rain which causes flooding in the river flow so that the turbine operates optimally, because the flow rate required is sufficient to power the three turbines to a maximum of 2 MW. Then for the lowest electricity production, which is 5,124 kWh, due to trips and less flow rate.
ANALISA KOEFISIEN UJUK KERJA MESIN PENDINGIN (CHILLER) UNIT 1 PADA POWER HOUSE Julianto Sinaga; Yovan Witanto; Agus Nuramal
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 6 No. 1 (2022): April 2022
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v6i1.25454

Abstract

Each refrigerant has different characteristic properties which affect the refrigeration effect and the resulting coefficient of performance (COP). A refrigeration machine that works by cooling water is called a refrigeration machine chillers. Chiller is an air conditioner with no cooling system direct. In this indirect cooling system, the refrigeration engine does not instantly cools the air in every room. Refrigeration machine cools water demin first, then this cold demin water is used for cool the air in the room. Cold demin water as cooling medium to reduce the temperature of a wide room at power house (PH) PLTA Musi. The method used in working on this practical work report is:by making observations or observations in the field, conducting interviews (interview) with supervisors and practical work supervisors regarding theoretical data (specification data). In this study, the Cooling Performance Coefficient (COP) was analyzed On Power House (PH) PT PLN (PERSERO) UL PLTA Musi The results of this study get the conclusion, namely: The coefficient of performance (COP) on the machine chiller unit 1 in Power House PLTA Musi by 4.22 is smaller than specification coefficient. This indicates that the cooling system is working properly optimal.
SIMULASI ANALISIS VELOCITY ALIRAN FLUIDA PADA TANGKI REAKTOR NUKLIR MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMICS (CFD) Mifta Aroyyani; Agus Nuramal; Hendri Hestiawan
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 6 No. 2 (2022): Oktober 2022
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v6i2.25461

Abstract

Center for Applied Nuclear Science and Technology (Pusat Sains dan Teknologi Nuklir Terapan /PSTNT) is a work unit that is under and directly responsible to the Deputy for Nuclear Science and Applications of Nuclear Technology, National Nuclear Energy Agency. In PSTNT Bandung, the function of the tank is as a container to place the reactor components, the reactor shield for the heat exchanger and as a place for nuclear reactions to take place. In nuclear reactor tank flow distribution ocures in various velocity.The purpose of this practical work is to analyze the velocity of fluid flow in the reactor tank from the inlet flow to the bottom surface of the reactor and from the bottom surface to the top surface of the TRIGA 2000 reactor. The method used in this practical work is the Computational Fluid Dynamics (CFD) Velocity method. CFD is a method for simulating fluid flow. The method is processed numerically and then digitally modeled. In practice, the authors modeled and studied the conceptual design of the reactor system using CFD based on Gambit and Fluent applications in a reactor tank. GAMBIT is an application produced by fluent inc. which is useful for making a model and discrete (meshing) to be analyzed by numerical methods. Fluent is an application that can solve fluid flow cases with the results obtained after discretizing the GAMBIT application. The results by CFD shows the distribution of fluid flow from the inlet pipe to the bottom surface of the reactor tank then the flow rises to the top surface to the outlet pipe. The velocity of the fluid flow from the inlet flow to the bottom surface was getting smaller, and the smallest value was at the bottom of the nuclear reactor, by 0.164 m/s and the flow distribution from the bottom surface to the top surface of the velocity value in a nuclear reactor would be bigger by the largest value being on the top surface of the nuclear reactor is 2.9 m/s.
Release of Hatchlings as an Implementation of Student Research Results in Turtle Conservation Efforts on the Coast of Bengkulu : Pelepasan Tukik sebagai Implementasi Hasil Penelitian Mahasiswa dalam Upaya Konservasi Penyu di Pesisir Bengkulu Dedi Suryadi; Zuliantoni; Agus Nuramal; A Sofwan FA
Dharmakayana Vol 2 No 1 (2025): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i1.41461

Abstract

Kegiatan pelepasan tukik merupakan salah satu wujud nyata dari hasil penelitian mahasiswa yang berfokus pada upaya konservasi penyu, khususnya di wilayah pesisir Bengkulu. Program ini muncul sebagai respons terhadap penurunan populasi penyu yang disebabkan oleh perusakan habitat, perburuan liar, serta rendahnya kesadaran masyarakat tentang pentingnya pelestarian spesies ini. Dengan pendekatan yang partisipatif, kegiatan ini melibatkan mahasiswa, masyarakat lokal, dan mitra konservasi untuk meningkatkan pemahaman serta kepedulian terhadap pelestarian penyu. Metode yang diterapkan dalam kegiatan ini meliputi sosialisasi, edukasi lingkungan, serta pelepasan tukik ke habitat alaminya, yang menjadi simbol nyata dari sumbangsih ilmiah dan sosial mahasiswa dalam konservasi. Hasil dari kegiatan ini menunjukkan peningkatan pengetahuan masyarakat mengenai siklus hidup penyu dan pentingnya menjaga ekosistem pesisir. Selain itu, kegiatan ini juga memperkuat kolaborasi antara perguruan tinggi dan komunitas lokal dalam pengembangan program konservasi yang berkelanjutan. Diharapkan, kegiatan ini bisa menjadi model pengabdian masyarakat yang berbasis penelitian dan dapat dicontohkan di wilayah pesisir lainnya.
Technology Transfer of Compost Briquette Production from Household Organic Waste in Sawah Lebar Baru Sub-District: Alih teknologi pembuatan briket kompos dari limbah organik rumah tangga di kelurahan sawah lebar baru Yovan Witanto; Agus Nuramal; Helmizar
Dharmakayana Vol 2 No 1 (2025): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i1.41604

Abstract

Compost produced by economically non-productive residents in Sawah Lebar Baru Subdistrict has remained underutilised, leading to accumulation and limited economic benefit. This community service activity aimed to introduce Seed Briquette Technology as an innovative solution to enhance the value and usability of household compost. The programme involved knowledge dissemination and hands-on training on how to produce seed briquettes using existing compost. The compost was compacted into Soil Blocks—pressed blocks with a central hole—using a manual moulding tool. This tool was introduced and distributed to local residents during a technology transfer session conducted by the Faculty of Engineering in RT 29. The participants responded with strong interest and demonstrated the ability to apply the technique successfully. Community members were able to convert their compost into functional seed briquettes, showcasing both skill development and successful adoption of the technology. As a result, the participants gained valuable technical skills which are expected to support future income generation. The activity highlights the potential of simple, locally adapted technologies to improve waste management and economic empowerment in urban communities.  
Government and community empowerment RT 29 RW 08 Sawah Lebar Baru subdistrict in the formation and assistance of free organic waste management Group I Yovan Witanto; Agus Nuramal; A Sofwan F Alqap
Dharmakayana Vol 1 No 2 (2024): November : Dharmakayana: Journal of scientists, engineers, educators and scientif
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v1i2.38963

Abstract

The community needs education to change from the first behavior which usually un-separates waste to separate the organic types into non-organic types, even needs developing to have a 3R behavior, reduce, reuse and recycle. Educational activities for the community of the RT 29 RW 08, the village Sawah Lebar Baru were begun with socialization and distributing brochures. In the following week, a questionnaire was distributed to assess who had a better perception of waste among them to be collected and formed into a group. This group was directed to develop their perception into behavior; they were given a means of separating organic and non-organic waste. In the upcoming activity program, an assessment will be carried out on them to find out which ones give more time voluntarily to manage waste. Those who do so will be developed into compost producers or craftsmen of valuable objects from waste
Co-Authors A Sofwan F Alqap A Sofwan FA A. Sofwan F. Alqap Angky Puspawan Arif Rahman Hafiz Dedi Suryadi Helmizar Hendri Hestiawan Julianto Sinaga Mifta Aroyyani Nurul Iman Supardi Rifki Sulthan Yossie Anggraeny M Yovan Witanto Zuliantoni, Zuliantoni