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All Journal Traksi : Majalah Ilmiah Teknik Mesin Rotasi Jurnal Teknik Rekayasa Mesin LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Indonesian Journal of Science and Technology JMPM (Jurnal Material dan Proses Manufaktur) Turbo : Jurnal Program Studi Teknik Mesin Machine : Jurnal Teknik Mesin SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan at-tamkin: Jurnal Pengabdian kepada Masyarakat Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Fisika : Fisika Sains dan Aplikasinya ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Pengabdian Vokasi Jurnal Polimesin
Muhamad Jafri
Universitas Nusa Cendana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Pengaruh Penggunaan Sistem Sekat Dalam Box Portable Atmospheric Water Generator Terhadap Unjuk Kerja Produksi Air, Efisiensi, COP, Pawg Sistem Alami Suparlan, Maria D.C.; Jafri, Muhamad; TARIGAN, Ben Vasco
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 10 No 02 (2023): Oktober 2023
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v10i02.13275

Abstract

2.1 billion people can’t have access to water, and 4.5 billion with insufficient sanitation or clean water sources. While water is extremely useful for everyday, such as washing, cooking, bathing etc. So fulfillment of water needs must balanced with increase the addition of population can be fulfilled. this study, was carried out experimentally by testing on 2 variations media, media test with insulation and media test without insulation, at 30 minutes intervals, temperature was measured in box to identify factors affect condensation process at several points. Obtained from research analyze effect using partition system on PAWG indications for water production, efficiency, COP, natural PAWG systems for fresh water production within 24 hours from 2 variations of media and maximum Coefficient of Performance. Water amount production for 24 hour, the variation of media with changes in temperature and good COP is found in variation media with insulation, the highest temperature is 36.750C, the humidity value 66.3% and COP value 0.230769 and amount water production is 16 ml, and temperature change in variation of media without insulation with the highest temperature is 39.50C, humidity is 65.4% with a COP value 0.02 and the amount of water production is 12 ml.
Performance Test of Household Plastic Waste Shredding Machine Lede, Agustinus Syrillus Umbu; Jafri, Muhamad; Gusnawati, Gusnawati
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3742

Abstract

The abundance of plastic in daily life has a serious environmental impact as it takes 50-100 years to decompose. To solve this problem, plastic shredding machines are used to cut plastic waste into recyclable flakes. This study aims to determine the performance of plastic waste shredding machines. The method used is an experiment by testing the performance of the shredding machine at 1000 rpm, 1200 rpm, and 1400 rpm, with variations in the types of plastic waste Polyethylene (PE), Polypropylene (PP), and Polyethylene Tereftalat (PET). The observed parameters include engine production capacity, weight loss, and fuel consumption. The results showed that the production capacity of the machine increased as the rotation speed increased, with more efficient fuel consumption at higher rotation due to faster shredding time. A rotation speed of 1200 rpm produced more uniform shredding of PE and PET plastics, while the harder PP plastics required a speed of 1400 rpm for uniform results.
Penggunaaan bahan alami briket arang kayu sebagai penyerap dan penyimpan kalor solar still desalinasi interfasial Jafri, Muhamad; Alfarisi, Figo Jafri; Tarigan, Ben Vasco
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 11 No 02 (2024): Oktober 2024
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v11i02.18042

Abstract

Considering that solar energy is unlimited, it is hoped that the solar still distillation method can be used in remote and poor areas without pollution and excessive consumption of fossil fuel materials. In this research, charcoal from dried Kusambi (Schleichera Oleosa) coded SO_W is used as a carbon-based heat absorbing and storing material, which has porous characteristics and high energy absorption so that it forms a wider surface for radiation and convection. The experiment was carried out in 4 basins using Styrofoam containing charcoal briquettes with a cross-section of 4, 6, and 8 sections with different sizes and areas in 1 absorber section for 8 hours under sunlight. Basins without charcoal were also tested as a comparison. Temperature is measured at several points in the basin to identify factors influencing evaporation. The results of the research show that adding heat-absorbing material to the basin can accelerate seawater to reach its boiling point so that it can evaporate (evaporation). Temperature and humidity in each basin also have similar changing trends where temperature is strongly influenced by solar radiation. The use of charcoal briquettes can also increase the rate of convection and evaporation heat transfer in the basin, as well as maximum efficiency in basin 2 with a variation of 6 plots of 39.97%, followed by a variation of 4 plots in basin 1 of 38.32%, and a variation of 8 plots in basin 3 it was 37.59%. Meanwhile, in basin 4 with the variation without charcoal, the efficiency was 34.96%.
Pemberdayaan Perempuan Pesisir Pantai Muara Abu Kupang melalui Pelatihan Olah Sampah Plastik Bernilai Ekonomis dan Berdaya Guna Gusnawati, Gusnawati; Jasron, Jahirwan Ut; Jafri, Muhamad; Sanusi, Arifin
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 2 (2024): Kolaborasi yang Kuat untuk Kekuatan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i2.531

Abstract

Waste is anything that is no longer used from all human activities, where, if not managed properly, it can hurt the surrounding community, including waste dumped into water channels such as rivers, which carry the waste to the sea and pollute the sea. Plastic waste is included in it. The amount of this waste continues to increase over time. The use of equipment made of plastic because it is light, unbreakable, flexible, practical, economical, and can replace the function of other items, such as use for drinking water packaging, food containers, and others, encourages increased production of plastic waste. Skills are needed in processing and converting this plastic waste into goods that have economic value and are helpful, especially for residents who live around rivers and coastal areas, including on the coast of Muara Abu Beach, West Oesapa. Therefore, this service aims to provide practical solutions by providing skills to women on the coast of Muara Abu Beach who have a profession as scavengers who join PKH Kasih Dua RT. 001/RW 001, Oesapa Barat Village, Kupang City, to implement waste bank management and plastic waste processing techniques that cannot be deposited into the waste bank, namely with a plastic waste shredder machine, so that residual waste has economic value. The implementation of community service using interview and training methods related to waste bank management and the use of plastic waste shredder machines. The pre-test and post-test results of community service participants showed that 65% of the participant's knowledge of the activity material was an essential reason for the sustainability of similar programs for other community environments. It is hoped that activities like this can provide solutions to problems related to waste around the partner's residence.
Pengaruh Pengaruh Variasi Tinggi Cover Collector Distilasi Surya Pasif Terhadap Produktivitas Distilat Djoe, Daniel Marwill; Tarigan, Ben V; Jafri, Muhamad
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.19942

Abstract

Clean water is a vital resource that is increasingly difficult to obtain in many regions of the world, including Indonesia, which faces significant challenges in providing clean water. Passive solar desalination is an efficient alternative method to convert seawater into fresh water by utilizing solar energy. This study aims to analyze the effect of varying cover collector heights on distillate productivity in passive solar desalination, using charcoal as an energy-absorbing material. The varied cover collector heights used were 30 cm, 45 cm, and 55 cm. The results of the study show that the smaller the distance between the seawater surface and the cover collector, the higher the distillate productivity. Basin 1 (30 cm) produced the highest distillate (120 ml), followed by Basin 2 (45 cm) with 94 ml, and Basin 3 (55 cm) with 60 ml. This indicates that a smaller gap between the cover collector and the seawater surface increases the evaporation and condensation rates, contributing to higher distillate productivity.
Effect of tubular-typed charcoal height variations on efficiency in passive interfacial solar desalination Pardiono, Tri Ramadhani; Jafri, Muhamad; Tarigan, Ben Vasco
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4890

Abstract

Passive solar desalination is a process of reducing the salt content of salt water to produce fresh water by utilizing solar heat. In recent years, interfacial heating has been proposed as an alternative to evaporation by creating localized heat on the water surface. Charcoal is an absorbent, heat storage, and wettability material, so the evaporation process not only occurs on the surface of seawater but also on the surface of the charcoal, which results from this wettability. The height of the charcoal indicates the distance the steam travels to reach the glass surface for the condensation process, thereby speeding up evaporation. The experiment was carried out in 4 single-slope-type basins using tubes filled with charcoal as high as 30, 40, and 50 mm for 8 hours in the sun. The results showed that adding heat-absorbing material to the basin was able to accelerate seawater to reach its boiling point so that it could evaporate. The temperature and humidity in each basin also have a similar changing trend where temperature is strongly influenced by solar radiation. The use of charcoal can also increase the rate of convection and evaporation heat transfer in the basin, as well as the maximum efficiency in basin 4 with an efficiency value of 56.40%, basin 2 at 53.17%, basin 3 at 51.62%, and basin 1 44.17%. Efficiency is obtained from the desalination efficiency equation, namely the ratio of the latent heat of vaporization to the solar energy entering the system
Pelatihan teknologi dan manajemen pengolahan sampah di kelurahan sikumana Gusnawati, Gusnawati; Bale, Jefri Semuel; Jasron, Jahirwan Ut; Boimau, Kristomus; Riwu, Defmit B.N.; Jafri, Muhamad; Selan, Rima Nindia; Pell, Yeremias M.
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 2 (2024): June
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i2.23280

Abstract

AbstrakKelurahan Sikumana terletak di Kecamatan Maulafa, luas wilayahnya 336 Ha, berbatasan dengan kelurahan Belo (Sebelah Timur), kelurahan Batuplat (Sebelah Barat), kelurahan Naikolan dan kelurahan Oepura (Sebelah Utara) dan Kelurahan Fatukoa (Sebelah Selatan). Penduduknya heterogen dengan beragam suku dan mayoritas penduduk berasal dari Toraja, Rote, Sabu, Flores, Sumba, Timor, Jawa dan suku-suku lainnya, berjumlah 21.073 jiwa dengan 4.172 KK. Dalam hal pengelolaan sampah, masyarakat Sikumana belum maksimal. Sampah rumah tangga hanya dikumpulkan dan dibuang di kontainer sampah yang disiapkan pemerintah di tepi jalan, kemudian diangkut truk sampah setiap hari. Masih terdapat masyarakat yang membakar sampah dikarenakan letak tempat sampah jauh dari pemukiman mereka, terdeteksi sebagian masyarakat yang membuang sampah di kali yang ada di kelurahan mereka. Kegiatan PKM ini bertujuan melakukan pelatihan teknologi dan manajemen pengolahan sampah, terkhusus sampah organik dan sampah plastik. Pelaksanaan pengabdian ini melalui tahapan penyajian hasil penerapan teknologi pengolahan sampah dan manajemen pengolahannya, dalam hal ini pembuatan Eco Enzyme untuk sampah organik dan pengenalan serta penerapan Bank Sampah kepada masyarakat Sikumana. Harapannya menjadikan sampah mereka bernilai ekonomis yang menambah pemasukan keluarga. Pengabdian ini menjadi wadah dalam membantu masyarakat dan pemerintah setempat dalam mengelola sampah berbasis komunitas secara bijaksana dan mengurangi kuantitas sampah yang diangkut dan menumpuk di Tempat Pembuangan Akhir (TPA). Hasil pre test dan post test peserta kegiatan pengabdian menunjukkan peningkatan signifikan. Rerata nilai pre-test peserta yang dilakukan sebelum kegiatan pengabdian sebesar 65 dan rerata nilai post-test peserta yang dilakukan setelah pemberian materi dan praktik, meningkat menjadi 88,67. Peningkatan pemahaman dan pengetahuan peserta mencapai 23,67. Kata kunci: sampah; eco enzyme; manajemen bank sampah AbstractSikumana Village is located in Maulafa District with an area of 336 Ha, bordering Belo Village (East), Batuplat Village (West), Naikolan Village and Oepura Village (North) and Fatukoa Village (South). The population is heterogeneous, consisting of various ethnic groups and the majority of the population comes from the Toraja, Rote, Sabu, Flores, Sumba, Timor, Javanese and other tribes, totaling 21,073 people with 4,172 families. In terms of waste management, the Sikumana community is not optimal. Waste from their households, it is only collected and thrown away in rubbish containers prepared by the government on the side of the road which are then picked up by rubbish trucks every morning. There are still people who burn rubbish because the rubbish bins are far from their residences, and there are even a handful of people who throw rubbish away. in the river in their sub-district. This PKM activity aims to provide training on waste processing technology and management, especially organic waste and plastic waste. organic waste and the introduction and application of the Waste Bank to the Sikumana community. With the hope of making their waste economically valuable and increasing family income. This service is a forum for helping the community and local government in managing community-based waste wisely and reducing the quantity of waste transported and piling up at the Final Disposal Site (TPA). The pre-test and post-test results of service activity participants showed a significant increase. The average pre-test score of participants carried out before service activities was 65 and the average post-test score of participants carried out after providing material and practice increased to 88.67. The increase in participants' understanding and knowledge reached 23.67. Keywords: waste; eco enzyme; waste bank management
Co-Authors Alfarisi, Figo Jafri Alionvember R. Thei Aloysius Meo Aloysius V.P. Piamat Ankira E. N. Saputro Apriyanto Banamtuan Arifin Sanusi Bale, Jefri Semuel Ben V. Tarigan Ben V. Tarigan Ben V. Tarigan Ben Vasco Tarigan Ben Vasco Tarigan Charles Silla Daud P. Mangesa Defmit B.N. Riwu Djoe, Daniel Marwill Dominggus Godlief Heryson Adoe Elfridus Bruno Lake Erich Maliwemu, Erich Erkes Lodoh Fransiskus Sogen Gusnawati Gusnawati Gusnawati, Gusnawati Hairman Sahrudin Lanae Ishak Limbong Jahirwan Ut Jasron Jefri Semuel Bale Konstantianus Mone Kristianus Yosafat Goab Kristomus Boimau Kristomus Boimau Lede, Agustinus Syrillus Umbu Margaretha Kewa Unarajan Matheus M. Dwinanto Mohamad Fajri Nabuasa, Meinase K Noveryandy Muda Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Oematan, Abraham Pardiono, Tri Ramadhani Pell, Yeremias M. Philipus Andreas Rima Nindia Selan Rimas, Dedy Isman Sakaria Koli Sanusi, Arifin Sanusi, Arifin Selan, Rima Senu, Stefanus Stef Siagian, Saut Ronny Tuah Soni A Kaban Stefanus Neno Suparlan, Maria D.C. Tarigan, Ben V Tarigan, Ben V. Verdy A Koehuan Verdy A. Koehuan Wangge, Gusti F.X. Wara Wenseslaus Bunganaen Yakub M. Lanata Yeremias M. Pell Yohanes V. Gere Zakharias S. Nady