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Nasrul Ilminnafik
Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
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Ethanol Blend Effects on The Spray Properties of a Biodiesel Fuel by Ambient Pressure Variation Nasrul Ilminnafik; Intan Hardiatama; Ahmad Adib Rosadi; Andi Sanata; Faiz Firdausi
Indonesian Journal of Applied Research (IJAR) Vol. 4 No. 2 (2023): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v4i2.287

Abstract

Diesel engine spray nozzles are crucial to pollutant generation and engine efficiency. Nozzle performance can be enhanced by adjusting the nozzle's internals. A successful demonstration of the nozzle would be one in which the spray's outcome was uniformly dispersed throughout a wide area, with the grains scattered similarly. The purpose of this research was to examine how a diesel-ethanol characteristic under normal atmospheric pressure (spray tip penetration, the velocity of spray, and spray angle) and, in general, to assess the performance of biodiesel fuel on diesel engines, a substantial amount of biodiesel and operational expenses for the engine are necessary. It was an experimental approach to the study. The research involved recording spray fuel at the nozzle. Using a 480 fps high-speed camera, we tested BD20, BD20E5, and BD20E10 fuel at three different ambient pressures (1 bar, 2 bar, and 3 bar). The injection pressure was 15 MPa, and the fuel temperature was 28.2 degrees Celsius. Spray tip penetration and spray velocity decreased and spray angle increased after ethanol was added to the mixture, consistent with the studies' findings. Lowered spray tip penetration, slower spray speeds, and a complete spray angle result from the increased ambient pressure.
PEMANFAATAN LIMBAH PRODUKSI ARANG KAYU MENJADI BRIKET ARANG SEBAGAI UPAYA PENINGKATAN KEBERDAYAAN EKONOMI PEDESAAN Digdo Listyadi Setyawan; Nasrul Ilminnafik; Hary Sutjahjono; Intan Hardiatama; Misto Misto
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 3 (2023): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i3.16607

Abstract

ABSTRAKDi Dusun Gunung Giri, yang  terletak di Desa Wonosari, Kecamatan Grujugan, Kabupaten Bondowoso,  terdapat sejumlah UMKM pembuat arang kayu. Arang kayu  biasanya digolongkan menjadi tiga A, B dan C.  Harga arang kayu untuk golongan A  adalah Rp. 2.700 per kg, golongan B adalah Rp. 500 per kg , sedangkan untuk golongan C biasanya dibuang.  Sebetulnya produk arang golongan B dan C dapat diolah lebih lanjut menjadi bentuk briket sehingga  memiliki nilai ekonomis yang lebih tinggi. Program Pengabdian kepada Masyarakat (PKM) dilaksanakan dengan menggunkan metode penyuluhan dan  pelatihan kepada mitra yang berjmlah sekitar 15 orang pengrajin arang yang pada akhir program dilakukan evaluasi berupa kuisioner dan berkonsultasi berkelanjutan untuk pengambangan produk arang kayu yaitu menjadikan arang golongan B dan C menjadi briket arang. Hasil kegiatan pengabdian masyarakat menunjukkan bahwa telah terjadi peningkatan softskill SDM  pengrajin  sebesar lebih dari 80 % dan peningkatan nilai ekonomis dari pembuatan beriket arang sebesar 200 %. Kata kunci: briket; arang kayu; pelatihan; penyuluhan. ABSTRACTIn Gunung Giri Hamlet, which is located in Wonosari Village, Grujugan District, Bondowoso Regency, there are a number of SMEs producing wood charcoal. Wood charcoal is usually classified into three A, B and C. The price of wood charcoal for class A is Rp. 2,700 per kg, group B is Rp. 500 per kg, while for group C it is usually discarded. Actually, the products of group B and C charcoal can be further processed into briquettes so that they have a higher economic value. The Community Service Program (PKM) was carried out using counseling and training methods for approximately 15 partners who were charcoal craftsmen who at the end of the program were evaluated in the form of questionnaires and ongoing consultations for the development of wood charcoal products, namely turning class B and C charcoal into charcoal briquettes. The results of the community service activities show that there has been an increase in the soft skills of craftsmen's human resources by more than 80% and an increase in the economic value of making charcoal beriket by 200%. Keywords: briquettes; wood charcoal; training; counseling.
A study on Flame Characteristics Premixed Burning by Giving Magnetic Field Induction Deny tomy andrianto; Muh. Nurkoyim Kustanto; Yuni Hermawan; Nasrul Ilminnafik; Salahuddin Junus
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3497

Abstract

This study aims to compare the effect of magnetic field induction on the characteristics of the fire resulting from the combustion of premixed biodiesel calophyllum inophyllum . Further research on premixed combustion flames due to magnetic field induction. As time goes by, petroleum is currently running low, therefore alternative biofuels are needed. One type of non-food vegetable oil is Jatropha and calophyllum inophyllum  oil, besides not being consumed, it can be processed into biodiesel as fuel. To get a more effective and efficient flame, you can apply a magnetic field effect to the fire, especially in terms of the burning rate of the fire. The experimental research method is to heat calophyllum inophyllum biodiesel until it is in the form of steam, then flow it to the burner which will then be given air which is controlled by the flow mass. Then the fire is ignited and the mass of the air flow is increased until the fire is lifted until it is extinguished. Two magnets are placed between the burners by varying the direction of the magnetic field N-S, N-N and the results of this study are the shape of the flame. The resulting fire is more transparent, clearer and more visible. The direction of the N-S magnetic field causes the temperature to be higher than the direction of the N-N magnetic field. The high and low of the flame is affected by the direction of the magnetic field, the stronger the N-S magnetic field. The magnetic field can affect the burning speed of the biodiesel flame. In a poor mixture (ϕ 1) in the presence of magnetic influence, the rate of fire is lower without the influence of a magnetic field, but in a rich mixture (ϕ 1) in the presence of a magnetic influence, the rate of fire is higher than without the influence of a magnetic field. This is due to the magnetic influence that induces oxygen. Oxygen is paramagnetic, so it can be attracted by magnetic fields.
Studi Kecepatan Pembakaran Laminar dan Tinggi Api Premix Avgas 100 LL dengan Variasi Ekuivalen Rasio Nasrullah, Muhammad Nur Cahyo Hidayat; Kustanto, Muh Nurkoyim; Darsin, Mahros; Ilminnafik, Nasrul; Syuhri, Skriptyan Noor Hidayatullah
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2952

Abstract

Aviation gasoline atau yang umum disebut dengan avgas merupakan bahan bakar bagi pesawat dengan mesin piston. Pesawat tipe ini pada umumnya banyak digunakan untuk pelatihan terbang hingga untuk penyemprotan tanaman. Banyak peneliti yang telah membahas mengenai bahan bakar ini. Namun, masih belum ditemukan mengenai pengujian kecepatan pembakaran (SL) dan tinggi api laminar premix menggunakan metode bunsen burner. Oleh karena itu penelitian ini membahas mengenai studi kecepatan pembakaran laminar dan tinggi api premix avgas 100 LL dengan memvariasikan ekuivalen rasio dari 0,8; 1,0 dan 1,2. Pada penelitian ini ditemukan bahwa kecepatan pembakaran tertinggi didapatkan pada ekuivalen rasio 1,0 yakni 49,31 cm/detik. Namun pada pengujian tinggi api, ekuivalen rasio 1,0 menghasilkan nilai tingi api terendah yakni 6,303 mm. Hal ini disebabkan karena nilai maksimum kecepatan pembakaran umumnya tercapai pada rasio stoikiometrik, yang menandakan saat bahan bakar dan udara dicampur dalam proporsi yang tepat untuk pembakaran sempurna. Dengan pembakaran campuran bahan bakar-udara yang mendekati stokiometri ini maka menyebabkan nilai tinggi api semakin rendah. Fenomena ini terjadi karena tinggi api terkait erat dengan konsumsi penuh uap bahan bakar, Sehingga, tinggi api mencapai titik akhir ketika semua bahan bakar yang menguap telah terbakar habis.
Pengukuran Intensitas Radiasi Matahari di Wilayah Kabupaten Nganjuk Tahun 2016 Mubiyn, Shidqi Nur; Ilminnafik, Nasrul
Jurnal Energi Baru dan Terbarukan Vol 5, No 1 (2024): Maret 2024
Publisher : Program Studi Magister Energi, Sekolah Pascasarjana, Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jebt.2024.21580

Abstract

Radiasi matahari merupakan faktor alam yang sangat penting bagi kehidupan manusia dan lingkungan. Radiasi matahari berperan dalam berbagai aspek kehidupan sehari-hari, termasuk mendorong pertumbuhan tanaman, memberi daya pada pembangkit listrik tenaga surya, dan berdampak signifikan terhadap kondisi atmosfer, iklim, dan cuaca di berbagai wilayah di dunia. Radiasi matahari juga berperan dalam berbagai aspek sains, seperti fisika, meteorologi, dan ekologi. Metode pengambilan data adalah langkah kunci dalam penelitian yang berfokus pada penggunaan sumber data dari website Photovoltaic Geographical Information System (PGIS). PGIS adalah sumber data yang sangat penting dalam studi ini karena menyediakan informasi terkini tentang sebaran sistem fotovoltaik (PV) di Kabupaten Nganjuk. Metode pengambilan data yang tepat akan memastikan bahwa data yang digunakan dalam penelitian ini akurat dan relevan. Pada tahun 2016, nilai rata-rata akumulasi radiasi gobal pada Kabupaten Nganjuk mencapai 156,21 kW/m2. Tingkat radiasi ini mencerminkan potensi energi surya yang dapat dihasilkan di Kabupaten Nganjuk. Dalam hal produksi energi surya, terjadinya hujan dan tutupan awan, terutama pada musim hujan dapat menjadi tantangan dalam input data. Beberapa wilayah seperti Nganjuk radiasi maksimum tercapai di musim kemarau. Fenomena yang terjadi pada Kabupaten Nganjuk menunjukkan bahwa radiasi matahari mencapai puncaknya pada bulan Agustus yang mencapai 180,67kWH/m2. Pengamatan ini menjadi penting untuk memberikan kontribusi dalam pemahaman mengenai variasi musiman radiasi matahari di wilayah Kabupaten Nganjuk serta menjadi dasar informasi yang penting untuk perencanaan dan pengembangan sumber energi surya.
RASIO KEPADATAN UDARA TERHADAP PERILAKU FORMASI PENGABUTAN BAHAN BAKAR CAMPURAN BIODIESEL hakim, lukman; Noor, M. Fathuddin; Wahyudi, Djoko; Ilminnafik, Nasrul; Kurniawan, Eva
Mechonversio: Mechanical Engineering Journal Vol. 6 No. 2 (2023): DESEMBER 2023
Publisher : Univervitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/mmej.v6i2.16431

Abstract

Rasio kepadatan udara memiliki peran penting dalam pengabutan bahan bakar, Pengabutan bahan bakar yang baik mampu dengan cepat mengubah fase bahan bakar cair ke dalam bentuk gas. Tujuan penelitian ini mengamati karakteristik pengabutan bahan bakar campuran biodiesel dan etanol. Metode Penelitian menggunakan metode ekperimental, Komposisi bahan bakar adalah B30+E5 (B30 sebanyak 95% dan etanol 5%), B30+E7 (B30 sebanyak 93% dan etanol 7%). Kepadatan udara di atur menggunakan sensor tekanan udara Tegangan Kerja: 5.0 VDC, Tegangan Keluaran: 0,5-4,5 VDC, Tekanan Kerja: 0-0,5 MPa. Tekanan injeksi 14,7 bar, pompa injeksi menggunakan pompa injeksi otomatis, variasi tekanan kompresi udara 2 bar, 3 bar, dan 4 bar. Hasil Penelitian peningkatan kepadatan udara mengakibatkan panjang pengabutan menurun, sudut pengabutan meningkat dan kecepatan pengabutan menurun.
The Effect of Nozzle Temperature, Infill Geometry, Layer Height and Fan Speed on Roughness Surface in PETG Filament Taqdissillah, Doohan; Muttaqin, Aris Zainul; Darsin, Mahros; Dwilaksana, Dedi; Ilminnafik, Nasrul
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 6, No 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v6i22022p074

Abstract

3D printing is a process of making three-dimensional solid objects from a digital file process created by laying down successive layers of material until the object is created. Many filaments can be used in 3D printing, one of which is PETG (PolyEthylene Terephthalate Glycol). PETG is a modification of PET (PolyEthylene Terephthalate) with added glycol at a molecular level to offer different chemical properties that provide significant chemical resistance, durability, and excellent formability for manufacturing. This study aims to find the most optimal parameter of surface roughness of PETG with different parameters of nozzle temperature, infill geometry, layer height and fan speed. Taguchi L16 (44), with four levels for each parameter, was used to determine the effect of each parameter. Each experiment was repeated five times to minimize the occurrence of errors. Based on the result, the effect of each parameter is nozzle temperature at 4.9%, infill geometry at 5.9%, layer height at 82.3%, and fan speed at 4.6%. Layer height has the highest effect on surface roughness, and other parameters have a low effect, under 7%. Research shows that the optimal combination of parameters is a nozzle temperature of 220 °C, infill geometry zig-zag, layer height of 0.12 mm, and a fan speed of 80 %.
Spray Characteristics at Preheating Temperatur of Diesel-Biodiesel-Gasoline Fuel Blend Arifin, Moch Miftahul; Ilminnafik, Nasrul; Kustanto, Muh. Nurkoyim; Triono, Agus
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i22021p135

Abstract

Technological developments in diesel engines require improvements to the fuel injection system to meet the criteria for economical, high-power and efficient combustion and meet environmental regulatory standards. One method that has a lot of interest is changing the characteristics of the fuel, with the aim of producing optimal combustion. Spray characteristics have a big role in determining the quality of combustion in diesel engines. A good spray can improve the quality of fuel atomization and the homogeneity of the air-fuel mixture in the combustion chamber so that it can produce good engine performance and low emissions. This study aims to determine the effect of a diesel-biodiesel (Calophyllum inophyllum)-gasoline blendandfuel heating on the spray characteristics. The research was conducted with variations in composition (B0, B100, B30, B30G5 and B30G10) and fuel heating (40, 60, 80, and 100 °C). Fuel injected atapressure of 17 MPa in to a pressure chamber of 3 bar. The spray formed was recorded with a high-speed camera of 480 fps (resolution 224x168 pixel). In B100 biodiesel, the highest viscosity and density cause high spray tip penetration, small spray angle, and high spray velocity. The addition of diesel oil, gasoline, and heating fuel reduces the viscosity and density so that the spray tip penetration decreases, the spray angle increases and the velocity of spray decreases.
The Flame Characteristics of Diesel Fuel Blend with Kepuh (Sterculia Foetida) Biodiesel Prasetiyo, Dani Hari Tunggal; Ilminnafik, Nasrul; Junus, Sallahudin
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 3, No 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.467 KB) | DOI: 10.17977/um016v3i22019p070

Abstract

Kepuh biodiesel fuel (sterculia foetida) is an alternative fuel that can be used to replace fossil fuel. Diesel fuel is performed to determine the laminar flame speed of combustion and high flame by adding biodiesel kepuh volume of 10%, 20%, 30%. The purpose of this study was to study the effect of biodiesel and the effect of bunsen burners on the laminar flame speed of combustion and flame height. Bunsen burner is made of copper and stainless steel. Testing of flame characteristics were carried out by heating the mixture of fuel and air at temperature of 200oC. The purpose of heating the air is to prevent cooling when mixed with fuel. The mixture of fuel and air flowed into the mixing chamber and bunsen burner. The mixture of fuel and water flows into the mixing chamber and bunsen burner to form a fire. Flame images were recorded using a high speed fuji film camera with a speed of 480 fps with a resolution of 224x168. The test results were analyzed by measuring the angle and height of the flame using the freeware imageJ program. The results of the B10 (diesel oil without the addition of biodiesel) fuel mixture test using copper bunsen burner produced a maximum laminar flame speed of 23.6264 cm / s at φ = 0.8. The highest value of the B30 fuel mix flame (30% full biodiesel + 70% diesel oil) produces a maximum flame value using a stainless steel bunsen burner with a value of 25,417 mm at φ = 1.2. The results showed that B10 in copper bunsen burner had the highest laminar burn rate. The composition of the fuel and bunsen burner affects the combustion characteristics and flame height.
The Combustion Characteristics of Calophyllum inophyllum Fuel in the Presence of Magnetic Field Sugara, Imam Rudi; Ilminnafik, Nasrul; Junus, Salahuddin; Kustanto, Muh Nurkoyim; Hermawan, Yuni
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i12023p028

Abstract

The study objective is to investigate the combustion characteristics of Callophyllum inophyllum fuel in presence of a magnetic fields. To conduct the experiment, a bunsen burner was utilized, with fuel and air being dispensed via a syringe pump and compressor, both regulated by a flowmeter. The fuel and air pipes were heated to 532.15 (K) to facilitate fuel evaporation. The equivalent ratio of 0.5, 1, and 1.5 was adjusted to control air discharge and fuel. An 11,000 gausses artificial magnet was used, with N-S, N-S, N-N, and S-S being the various magnetic pole configurations. The study found that the magnetic field can enhance combustion quality by affecting the molecules involved in the combustion process. The magnetic field's force also intensifies the movement of O2, making it more energetic. As O2 travels from the North Pole to the South Pole through the combustion reaction zone, it quickens the oxidation-reduction process and curtails diffusion combustion. The red color's intensity diminishes with the magnetic field's effect, indicating this phenomenon. When a magnetic field is applied, the polarity of C.inophyllum biodiesel fuel becomes highly favorable. The triglyceride carbon chain bonds become unstable, and the van der Walls dispersion forces are weakened, which facilitates easier O2 binding to the fuel, resulting in more efficient combustion. An increase in the laminar burning velocity value can be noticed when exposed to a magnetic field.
Co-Authors Achmad Aminudin Achmad Rifqi In'Amullah Adhe Reza Firmansyah Adhika Widyaparaga Agus Triono Ahmad Adib Rosadi Ahmad Adib Rosyadi Ahmad Iqbal Fawaid Ahmad Syuhri Ahmad Zainuri Alfariz, Mohammad Rifqy Alfian Futuhul Hadi Alfons Erick Perkasa Alfons Erick Perkasa, Alfons Erick Ali, Reynaldi Akbar Alief Muhammad Aliyansyah, Berly Amirul Yahya Andi Sanata Andi Sanata Apip Amrullah Arifin, Moch Miftahul Aris Zainul Muttaqin As’adi GA, As’adi As’adi GA Atlanta Iwananda Audiananti Meganandi Kartini Audiananti Meganandi Kartini Bekti Palupi Cahya Alief Prasetyo Cahyadi, Tedi Setiawan Cahyani, Elisna Tirta Danang Yudistiro Danang, Yudistiro Dani Hari Tunggal Prasetiyo Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Deny tomy andrianto Deny Tomy Andrianto Digdo Listyadi, Digdo Dimas Endrawan, Putra Djoko Wahyudi Dony Perdana Dwi Djumhariyanto Faiz Firdausi Fiqih Muhammad Firdausah, Risco Eka Firdiansyah, Alfian Freitas, Domingos de Sousa Frenico A.O. Fx. Kristianta Gaguk Jatisukamto GAMMA ADITYA RAHARDI Haidzar Nurdiansyah Halimatus Sa'diyah Halimatus Sa’diyah Hari Arbiantara Hari Arbiantara Basuki Hari Arbiantara, Hari Hary Sutjahjono Ibnu, Muhammad Khadafi Imam Rudi Sugara Imam Sholahuddin Indro Pranoto Intan Hardiatama Ivan Bagus Sanjaya Junus, Sallahudin Kristianta, Franciscus Xaverius Kristianta, Fransiscus Xaverius Kurniawan, Eva Kustanto Muh. Nurkoyim Kustanto, Muh. Nurkoyim Luh Putu Ratna Sundari Lukman Hakim Lukman Hakim M Katibi Vanhas M. Agung Fauzi M. Agung Fauzi, M. Agung M. Fahrur Rozy Hentihu M. Fathuddin Noor, M. Fathuddin M. Katibi Vanhas Mahmud, Rizal Mahros Darsin Masruri Wardhana Misto Misto Moch. Rizal A. Y. Moch. Rizal A. Y., Moch. Mochamad Asrofi Mochamad Edoward Ramadhan Moh. Nurkoyim Moh. Nurkoyim Kustanto Mubiyn, Shidqi Nur Muh Nurkoyim Kustanto Muh Nurkoyim Kustanto Muh. Nurkoyim Kustanto Muh. Nurkoyim, Kustanto Muhammad Dimyati Nashrullah Muhammad Dimyati Nashrullah Muhammad Izzuddin Al Haq Muhammad Lutfi Azis Muhammad Nur Cahyo Hidayat Nasrullah Muhammad Nurkoyim Nofal Kharis Nofal Kharis Kharis Nugraha, Raafi Aditya Nur Widodo Nurkoyim Kustanto, Muh Puji Kristianto Putra Dimas Endrawan Putra, Dimas Endrawan Qoyinul Amin Rahma Rei Sakura Rika Dwi Hidayatul Qoryah Rima Zidni Karimatan Nisa Rizal Mahmud Robertoes Koekoeh K.W. Sa'diyah, Halimatus Salahuddin Junus Santoso Mulyadi Saputra, Toni Haikal Setyo Pambudi Setyo Pambudi Solahuddin, Imam Sumarji Sumarji Suyitno Syahriza, Mochamad Rifki Syuhri, Skriptyan N.H. Syuhri, Skriptyan Noor Hidayatullah Tanu Alifuddin D. S Taqdissillah, Doohan Trifiananto, Muhammad Welayaturromadhona Wibowo, Robertoes Koekoeh Koentjoro Widyaningrum Febriolita wigo ardi winarko Wisnu Kuncoro yudan priyo anggono Yuni Hermawan Yusron Maulana, Raden Muhammad