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All Journal Jurnal Teknik LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Jurnal Pengabdian UntukMu NegeRI JMM (Jurnal Masyarakat Mandiri) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Penelitian Enjiniring Fakultas Teknik Unhas ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Lembaga Pengabdian Kepada Masyarakat Undana
Dominggus Godlief Heryson Adoe
Universitas Nusa Cendana
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Karakteristik Pembakaran Premixed Campuran Bioetanol Dan Premium (Gasoline) Riwu, Defmit B.N.; Tobe, Adi Y.; Adoe, Dominggus G. H.; Pah, Jack C.A.; Baria, Metrisno
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8061

Abstract

Bioethanol is one of the renewable energies that can be used as fuel. Ethanol produced from palm sap can be used to mix fuel oil (BBM) into gasohol (energy mixed) which marks green fuels era begin. This research was conducted by burning a mixture of Bioethanol (105 ml, 120 ml, 135 ml, 143 ml) and Premium (45 ml, 30 ml, 15 ml, 7 ml), to determine the effect of adding Premium into bioethanol on temperature and flame color. The combustion process is carried out by premixed, in which a mixture of bioethanol and premium is heated to produce steam. This steam will be given a spark to produce combustion of the mixture. After the steam burns and produces a fire, then the air flow rate is regulated until the fire is blow-off. The results of the study indicate that, if the composition of bioethanol in the fuel is increasing, the flame looks bluer and the equivalence ratio value becomes smaller. In addition, the temperature reached at point 1 is higher than point 2. This indicates that point 1 is the final combustion zone, which is where the fuel has been burned completely
Temperatur, Warna Nyala Api, dan Tinggi Api pada Pembakaran Premixed Bioetanol dari Lontar (Borassus Flabellifer) Tobe, Adi Y.; Riwu, Defmit B.N.; Pah, Jack C.A.; Adoe, Dominggus G. H.; Baitanu, Rivanto
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8062

Abstract

Bioethanol is a renewable energy that can be used as an alternative fuel. Bioethanol is alcohol produced from plants by using microorganisms through a fermentation process. This study aims to determine and analyze the combustion characteristics of premixed bioethanol from Lontar (Borassus Flabellifer), including: temperature, flame height and flame color. The research method uses a variety of air to be inserted, starting from 0 ml/min air flow to blow off in multiples of 50 ml/min. From the results of research that has been done, it shows that in premixed combustion the more air volume is given, the more blue the color of the flame will be, the temperature of the fire will increase and the height of the fire will be lower
Rancang Bangun Alat Pirolisis Reaktor Tabung Bertingkat untuk Daur Ulang Sampah Plastik Polypropylene (PP) dengan Menggunakan Metode VDI 2221 Adoe, Dominggus G. H.; Riwu, Defmit B.N.; Husein, Fuaddin B.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8063

Abstract

The benefits of this research are to produce fuel oil products from Polypropylene (PP) plastic waste as an alternative energy source by utilizing pyrolysis technology and increasing the economic value of unused plastic waste and as a reference for overcoming environmental pollution caused by plastic waste. The final result of this research is a detailed drawing of the tool, the design of the tool, and the results of the testing process on the tool in the form of data on the quantity of oil in each test carried out. With the VDI 2221 design method, a multilevel tube reactor pyrolysis device can be made for recycling polypropylene (PP) plastic waste with the best variant selection technique. The application of the method in this study was successfully proven by choosing concept 4 as the best concept and the concept could be made in real terms. Furthermore, the tool after testing is proven to be able to be used to produce products, as evidenced by the results of product testing in the form of oil, residue and gases
Analisis Pengaruh Variasi Massa Material Arang Terhadap Proses Desalinasi Air Laut Tenaga Surya Ojan, Alfond Fasselis; Tarigan, Ben V.; Adoe, Dominggus G. H.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 01 (2022): April 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i01.8064

Abstract

Desalination is the process of distilling seawater using a heat source from solar energy to obtain fresh water. Therefore, one of the methods used to increase the results of the seawater desalination process is to make a tool using solar energy and charcoal material. This research was conducted to determine the effect of using charcoal material on the seawater desalination process. The use of charcoal material is expected to increase the absorption of heat energy and accelerate the evaporation process of seawater. In this study, the highest efficiency was obtained in basin I with a mass of 500 grams of charcoal, namely 5.393% with 70 ml of water produced, followed by basin IV without using charcoal material with an efficiency of 6.116% with fresh water produced of 60 ml, followed by basin IV. II with a mass of 400 grams of charcoal obtained an efficiency of 1.585% with 59 ml of water produced. And in basin III the efficiency and fresh water produced is less, namely 0.004% and the water produced is 41 ml
Pengaruh Ketebalan Briket Arang terhadap Perubahan Temperatur dan Kelembaban pada Desalinasi Surya Sistem Interfacial Heating Siagian, Saut Ronny Tuah; Jafri, Muhamad; Tarigan, Ben V.; Riwu, Defmit B. N.; Adoe, Dominggus G. H.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 02 (2022): Oktober 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i02.8778

Abstract

Solar desalination is the process of reducing brine salinity by using heat from the sun to produce fresh water. Distillation is one of the traditional solar desalination methods, but it has a low evaporation rate. Recently, interfacial solar evaporation by thermal localization at the liquid interface has been proposed as a promising alternative to evaporation. In this study, briquettes were investigated as as the interface solar absorber to increase vapor production. Experiments were carried out in 4 single-slope type distillers for 8 hours under clear sunlight using 10, 15 and 20 mm thick briquettes. For comparison, we also looked at distiller (basin) with no charcoal. Temperatures and humidity were measured at several position within the basin to identify factors contributing to seawater evaporation. We found that the vapor production increases when temperature is high and humidity is low. While condensation is highly dependent on humidity, high humidity is able to make water vapor molecule reach its dew point faster. This condensation process will greatly impact the productivity of the distillate.
Analisis Gas Hasil Pembakaran Tungku Gasifikasi Tongkol Jagung Adoe, Dominggus G. H.; Jasron, Jahirwan Ut; Nahak, Jufrianus Aven; Riwu, Defmit B.N.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 02 (2022): Oktober 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i02.8889

Abstract

As an agricultural country, Indonesia has an abundant biomass energy source. One of the potential agricultural wastes to be processed into alternative fuels is corn cobs. Therefore, the purpose of his study was to compare the mass of corn cobs, namely 4 kg, 8 kg, and 12 kg, to gas produced by gasification at a temperature of 100-180 ºC. The results of the study showed that the gas produced by gasification of corn cobs with a mass of 4 kg, 8 kg, and 12 kg had a percentage of gas that tends to decrease with increasing fuel mass, namely 8 kg and 12 kg, the decrease caused by several factors, including the relative moisture content, high and low combustion temperatures. And the efficiency resulting from the combustion of the gasification furnace with mass variations, namely: 4 kg = 96,8843 %, 8 kg = 88,1387 % dan 12 kg = 88,1485%.
Karakteristik Pembakaran Premixed dari Campuran FAME (Fatty Acid Methyl Ester) dan Solar Murni Adoe, Dominggus G. H.; Talo, Piter; Pah, Jack C.A.; Tobe, Adi Y.; Riwu, Defmit B.N.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 02 (2022): Oktober 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i02.9375

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan solar murni ke dalam FAME (Fatty Acid Methyl Ester) pada proses pembakaran premixed, terhadap perubahan temperatur api dan warna nyala api. Percobaan dilakukan dengan membakar campuran minyak FAME dan minyak solar murni, dengan persentasi FAME dan solar murni sebesar 70%:30%, 80%:20%, 90%:10%, dan 95%:5%. Hasil pengujian pembakaram premixed dari campuran ini kemudian diamati warna nyala apinya dengan bantuan camera digital dan temperatur nyala apinya pada 2 titik, yang mana diukur secara langsung dengan menggunakan termokopel. Equivalence ratio pada pembakaran ini dihitung untuk semua komposisi campuran FAME dan minyak solar. Dari data hasil penelitian dan analisis, dapati bahwa semakin kecil equivalence ratio maka temperatur api akan meningkat. Hal ini terjadi karena udara yang ditambahkan dalam proses pembakaran tercampur sempurna dengan bahan bakar, sehingga kalor yang dihasilkan semakin besar dan juga temperatur semakin meningkat. Selain itu juga dapat terlihat bahwa temperatur pada titik 1 lebih tinggi dari pada titik 2. Hal ini menunjukkan bahwa titik 1 merupakan zona pembakaran akhir, dimana bahan bakar telah terbakar habis. Warna nyala api juga akan menjadi semakin biru ketika equivalence ratio semakin kecil.
Pengaruh Perlakuan NaOh dan Rendaman Air Tawar terhadap Kekuatan Bending Komposit Serat Limbah Rambut Manusia Adoe, Dominggus Godlief Heryson
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 9 No 02 (2022): Oktober 2022
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v9i02.9376

Abstract

Penelitian ini dilakukan guna mengetahui pengaruh perlakuan NaOH dan perendaman terhadap kekuatan bending komposit serat limbah rambut manusia. Fraksi volume serat 30%, perlakuan NaOH yang dipakai sebesar 5% sedangkan perendaman yang digunakan adalah perendaman pada air tawar dan air laut. Analisis data hasil pengujian bending dengan memakai standard ASTM D7264. Hasil pengujian yang telah dilakukan pada komposit yang diberi perlakuan NaOH tanpa menggunakan perendaman menghasilkan tegangan bending yang lebih tinggi yaitu 0.245 Mpa dibandingkan dengan komposit yang tanpa perlakuan NaOH dengan jenis perendaman air laut yaitu 0.125 Mpa. Momen bending pada jenis perlakuan NaOH tanpa menggunakan perendaman memiliki nilai momen bending tertinggi yaitu 8.52 Nmm, sedangkan jenis perlakuan tanpa NaOH dengan perendaman air laut memiliki nilai momen bending terendah yaitu 4.36 Nmm. Defleksi tertinggi terjadi pada spesimen dengan jenis perlakuan tanpa NaOH dengan perendaman air tawar yaitu 8.81 mm, sedangkan defleksi terendah terjadi pada spesimen dengan jenis perlakuan NaOH tanpa perendaman yaitu 6.06 mm.
Studi Pengaruh Perlakuan KOH Terhadap Kekuatan Tarik Komposit Serat Rami Lado, Putra E.; Adoe, Dominggus G. H.; Pah, Jack C.A.
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 10 No 01 (2023): April 2023
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v10i01.11989

Abstract

Currently, natural fiber composites have become the main choice for several industrial applications in the world. The strength of natural fibers such as hemp is based on laboratory results of mechanical strength testing which show that hemp has very suitable properties as a reinforcing composite for prosthetic socket materials. The tensile test is a mechanical stress-strain test that aims to determine the strength of a material against tensile forces. In the test, the test material is pulled until it breaks. Tensile testing is carried out to look for stress and strain (stress-strain test). From this test, we can know some of the mechanical properties of materials that are needed in engineering design. The results of research conducted on the study of the effect of KOH treatment on the tensile strength of hemp fiber composites show three things. First, the highest tensile stress value in hemp fiber was found in the 2% KOH treatment with a long soaking time of 2 hours with a value of 25.3 MPa. Second, the lowest tensile strain value in hemp fiber was found in the 6% KOH treatment with a long soaking time of 2 hours with a value of 0.1%. Third, the highest modulus of elasticity in hemp fiber was found in 6% KOH treatment with a 1-hour soaking time with a value of 47.1 MPa
Karakterisasi Minyak Hasil Pirolisis Berbahan Dasar Limbah Plastik Jenis Polypropylene (PP) Adoe, Dominggus G. H.; Satria, Devi Yola; Sanusi, Arifin
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.v10i02.13435

Abstract

This research was conducted to determine the characteristics of plastic waste pyrolysis oil and compare it with the characteristics of gasoline. The things studied included the physical and chemical properties of pyrolysis oil. The physical properties studied included viscosity and density, while the chemical properties were the heating value. The research was conducted using Polypropylene (PP) plastic, the reactor used was a single reactor with the reactor temperature set at 300 and 3500C. The results showed that the calorific value of pyrolysis oil was 0.194068464 J – 0.209067264 J, the density was 0.7941 – 0.8083 kg/l and the viscosity was 0.9500151572 cPs - 0.9651967743 cPs.
Co-Authors Abrahan Legifani Adi Y. Adoe Adi Yermia Tobe Adoniram Sabuin Aloysius Malik Koten Antonius Y. W. Timuneno Arifin Sanusi Ashsidiq, Muhammad Hasby Bahrun K. A. Mandala Baitanu, Rivanto Baria, Metrisno Ben V. Tarigan Ben V. Tarigan Ben Vasco Tarigan Beni Sanak Boru, Meiton Charles D Lakidang Dama, Firdaut Loja Dantje A. T. Sina Daud P. Mangesa Daud Pulo Mangesa Defmit B.N. Riwu Erich Maliwemu, Erich Ernanto, Nanang Fahik, Emanuel Don Ferdyan A. Soekwanto Ginting, Almido H, Gusnawati Gusnawati Gusnawati, Gusnawati Hari Rarindo Husein, Fuaddin B. Ika F. Krisnawi Ishak Limbong Jack C. A. Pah Jack C.A. Pah Jack C.A. Pah Jack Carol Adolf Pah Jahirwan Ut Jasron Jefri Semuel Bale Jemssy R. Rohi JonsJonson H. Laning Kristomus Boimau Lado, Putra E. lian, dandy hermanto M. Dwinanto, Matheus M. Maliwemu, Erich U. K. Maria Agustina Kleden Matheos Marc Tuka Penu Matheus M. Dwinanto Melian, Makxy Melian Muhamad Jafri N. G. A. Mulyantini Nahak, Jufrianus Aven Nana, Josef Etheldreda Nurhayati Ojan, Alfond Fasselis Pady, Aldy Pah, Jack C. A Pah, Jack C. A. Pah, Jack C.A. Pakpahan, Greynaldi Pallawagau, Murni Philiphi de Rozari Pollo, Don E.D.G. Rafael Damian Neno Bifel Reinaldy Weo Rima Nindia Selan Robin Diyener Takain Rohi, Jemssy Ronald Rosmiyati A Bella Samy Y. Doo Sanusi, Arifin Satria, Devi Yola Seprianus Rudolf Membubu SERAN, AGUSTO BRIA Siagian, Saut Ronny Tuah Sirya E. P. Temaluru soko, raymundus rheymon Talo, Piter Tarigan, Ben V. Tiro, Melkianus Tobe, Adi Yermia Verdy A Koehuan Verdy A. Koehuan Verdy Koehuan Wenseslaus Bunganaen Yakub M. Lanata Yeremias M. Pell Yoffial D. Banani Yohanes V. Gere