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All Journal Rotasi Jurnal Simetris Rekayasa Mesin VANOS Journal of Mechanical Engineering Education Journal of Science and Applicative Technology INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Tekno Insentif Jurnal Teknologi Terapan Journal of Renewable Energy and Mechanics APTEK G-Tech : Jurnal Teknologi Terapan Quantum Teknika Jurnal Vokasi Mekanika Sinergi Polmed : Jurnal Ilmiah Teknik Mesin AMMA : Jurnal Pengabdian Masyarakat Majalah Teknik Mesin
Dicky J. Silitonga
Teknik Mesin, Institut Teknologi Sumatera, Lampung Selatan, Indonesia 35365
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Social Sciences Transportation

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The Effect of Variations in The Composition of Coffee Grounds and Cocopeat Powder on The Characteristics of Briquettes With Tapioca Flour as A Binder Ahmadien, Ichwan Kurnia; Alfian, Devia Gahana Cindi; Afisna, Lathifa Putri; Silitonga, Dicky Januarizky
Jurnal Tekno Insentif Vol 18 No 2 (2024): Jurnal Tekno Insentif
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah IV

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36787/jti.v18i2.1714

Abstract

Biomass energy can be employed as a substitute for fossil fuels in energy systems: it is relatively sulfur-free, so it does not cause air pollution, and it can be used continuously due to its renewable nature. In this study, the production of biomass briquettes were carried out using coffee grounds and cocopeat powder as the base materials. The method involved making briquettes from coffee grounds and cocopeat powder with percentage ratios of 80%+20%, 60%+40%, 40%+60%, also 20%+80% using tapioca flour as a binder. The pressing was done at 50 kgf/cm², with carbonization of coffee grounds and cocopeat powder at 180°C for 60 minutes. Based on the testing results, the best variation was 60% coffee grounds and 40% cocopeat powder with a calorific value of 5196.25 cal/g, moisture content of 9.62%, ash content of 8.11%, carbon content of 50.2%, volatile matter of 67.4%, and a burning rate of 0.1978 grams/minute.
Analysis of Characteristics of Rice Husk Briquettes Using Starch Adhesive with Varying Adhesive Percentages Alfian, Devia Gahana Cindi; Yunasdi, Hamda; Syaukani, Muhammad; Silitonga, Dicky Januarizky
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 15, No 2 (2024): JURNAL SIMETRIS VOLUME 15 NO 2 TAHUN 2024
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v15i2.11162

Abstract

The increasing energy demand is currently being experienced by many countries, including Indonesia. Biomass holds significant potential as an alternative energy source that can replace the widely used fossil fuels. Biomass is also available in abundant quantities. One method to harness energy from biomass is through briquetting. Briquettes are solid materials that can be used as fuel for a specified period. In this research, rice husk biomass is used as the primary material for creating briquettes. Tapioca flour is used as the binder, and the briquettes are formed under a pressure of 40 kg/cm². The drying process is carried out at a temperature of 100°C for 3 hours, with variations in the percentage of the binder. The binder-to-rice husk ratios tested are 70% + 30%, 60% + 40%, and 50% + 50%. Based on the conducted tests, the most favorable variation is the briquette with a 50% + 50% adhesive-to-rice husk ratio. This variation exhibits a moisture content of 4.84%, a calorific value of 26,728.61 cal/g, an ash content of 28.78825%, a carbon content of 50.427%, a volatile matter content of 33.919%, and a combustion rate of 0.45662 g/minute.
PERBANDINGAN KUALITAS BRIKET CANGKANG KAKAO DAN LIMBAH PLASTIK SELULOSA ASETAT Alfian, Devia Gahana Cindi; Hidayatullah, M Taufik; Muhyi, Abdul; Syaukani, Muhammad; Afisna, Lathifa Putri; Silitonga, Dicky Januarizky; Kolala, Putra Andi
SINERGI POLMED: Jurnal Ilmiah Teknik Mesin Vol. 6 No. 1 (2025): Edisi Februari
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/sinergipolmed.v6i1.1948

Abstract

Pemanfaatan limbah biomassa sebagai sumber energi alternatif merupakan solusi potensial dalam mendukung keberlanjutan energi. Penelitian ini bertujuan untuk mengkaji karakteristik briket berbahan dasar kulit kakao yang dipadukan dengan selulosa asetat dalam tiga variasi komposisi (%), yaitu A (95:5), B (93:7), dan C (90:10). Briket diproses menggunakan tekanan sebesar 60 kg/cm² dan dikeringkan pada suhu 100°C selama 4 jam. Pengujian dilakukan untuk menentukan kadar karbon, kadar zat terbang, kadar abu, nilai kalor, serta laju dan durasi pembakaran. Hasil penelitian menunjukkan bahwa kadar karbon tertinggi diperoleh pada variasi A (79,29%), yang mendekati standar SNI 1683-2021 dengan batas minimal 79%. Kadar zat terbang pada semua variasi memenuhi standar, dengan nilai terendah pada variasi A (7,05%), lebih rendah dari batas maksimal SNI, yaitu 10-17%. Namun, kadar abu masih jauh melebihi standar, dengan variasi C memiliki kadar abu tertinggi (20,83%), sedangkan batas maksimal SNI adalah 4%. Dari segi nilai kalor, seluruh variasi belum memenuhi standar SNI yang mensyaratkan minimal 6500 kal/g, dengan nilai tertinggi hanya mencapai 4671,63 kal/g. Laju pembakaran tertinggi terjadi pada variasi C (0,26 g/menit) dengan waktu pembakaran 69 menit, sementara variasi A memiliki laju pembakaran terendah (0,22 g/menit) tetapi dengan durasi terpanjang (81 menit), menunjukkan efisiensi pembakaran yang lebih baik. Secara keseluruhan, briket kulit kakao dengan selulosa asetat memiliki potensi sebagai bahan bakar alternatif, tetapi masih memerlukan optimasi lebih lanjut untuk meningkatkan nilai kalor dan menurunkan kadar abu agar sesuai dengan standar nasional.
KAPASITAS PENDINGINAN DALAM LABORATORIUM MATERIAL Samarul Fuad, Muhammad Zamir Aizat; Munisamy, Loganraj; Sui, Jing Xian; Jehuda, Marthin; Silitonga, Dicky Januarizky
SINERGI POLMED: Jurnal Ilmiah Teknik Mesin Vol. 6 No. 1 (2025): Edisi Februari
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/sinergipolmed.v6i1.2103

Abstract

Kondisi ruangan yang nyaman dapat mempengaruhi performa kognitif serta kreativitas penghuninya. Ini dapat menjadi salah satu perhatian dalam merencanakan ruang-ruang diskusi akademik di kampus yang mendukung pembelajaran dan kolaborasi mahasiswa serta dosen. Mengingat iklim tropis Indonesia, diperlukan sistem pendingin yang efektif untuk menjaga kenyamanan penghuni ruangan. Penelitian ini menganalisis beban pendinginan di suatu ruang yang peruntukan utamanya adalah untuk diskusi. Dalam penelitian ini, dilakukan analisis pada beban pendinginan serta perbandingan dengan kapasitas pendinginan terpasang dari salah satu ruang diskusi di Institut Teknologi Sumatera (ITERA). Tujuannya adalah untuk mengevaluasi serta merekomendasikan kapasitas pendinginan yang ideal. Metodologi yang digunakan mencakup pengukuran karakteristik ruangan, sumber panas internal dan eksternal, serta faktor transmisi panas. Hasil analisis menunjukkan bahwa kapasitas sistem pendingin ruangan yang terpasang saat ini lebih kecil daripada beban pendinginan yang diperlukan dalam dua skenario yang dianalisis, yaitu dengan semua lampu dinyalakan dan dimatikan. Faktor-faktor seperti jumlah penghuni, penggunaan peralatan, pencahayaan, serta transfer panas melalui dinding dan jendela berkontribusi terhadap tingginya beban pendinginan. Hasil studi ini menyarankan perlunya peningkatan kapasitas pendinginan guna memastikan kenyamanan termal di ruangan serta efisiensi energi.
PENGARUH VARIASI PEREKAT TERHADAP KARAKTERISTIK BAHAN BAKAR BRIKET CANGKANG KELAPA SAWIT Alfian, Devia Gahana Cindi; Juhensen, Jodi; Paundra, Fajar; Silitonga, Dicky Januarizky
Jurnal Teknologi Terapan Vol 11, No 1 (2025): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v11i1.623

Abstract

This study explores the utilization of Renewable Energy Sources (RES) through the production of biomass briquettes using palm kernel shells as a sustainable energy source. The raw materials include palm kernel shells as the main component, along with tapioca flour, sago flour, and molasses as binders. The production process involves molding under a pressure of 50 kg/cm² and drying at 100°C for 3 hours. Experiments were conducted with variations in the proportions of the main material and binders, resulting in an optimal composition of 75% palm kernel shells and 25% binder. Test results indicate that briquettes with tapioca flour as a binder exhibit the best characteristics, with a moisture content of 3.74%, a calorific value of 5,405.67 cal/g, ash content of 5.77%, fixed carbon of 56.42%, volatile matter of 44.63%, and a burning rate of 0.1939 g/min. This study validates that the developed briquette formulation meets the SNI 01-6235-2000 standard, demonstrating its potential as a sustainable alternative energy source.
THE EFFECT OF ZNO/CUO-WATER- HYBRID NANOFLUID CONCENTRATION RATIO ON HEAT TRANSFER CHARACTERISTICS IN ELECTRONIC EQUIPMENT COOLING SYSTEMS Alfian, Devia Gahana Cindi; Meliala, Arvin Ade Guna; Riayatsyah, T. M. Indra; Silitonga, Dicky Januarizky
Media Mesin: Majalah Teknik Mesin Vol. 25 No. 1 (2024)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v25i1.2464

Abstract

The use of hybrid nanofluids CuO-ZnO /distilled water as a cooling medium was tested in this study to determine the characteristics of convection heat transfer. The hybrid nanofluids preparation process was carried out first by dispersing the CuO and ZnO nanofluids using an ultrasonic cleaner for 3 hours and then allowed to settle for 24 hours. Furthermore, the CuO and ZnO nanofluids were mixed based on the stipulated ration of CuO:ZnO (25%:75%), (50%:50%) and (75%:25) with a volume fraction of 0.5% and agitated for 1 hour. Testing of the hybrid nanofluids CuO-ZnO/distilled water was carried out using a water block as an electronic cooling device with a flow rate variation of 0.7 – 1.9 l/min. From experimental results, the convection coefficient, as one of performance parameters of cooling device, and its relation to Reynolds numbers was able to be determined. Overall, the results show that the rate of heat transfer with the hybrid nanofluids is higher compared to distilled water. At a particular configuration of flowrate and nanoparticle ratio, the hybrid nanofluid has more than 2.5 times higher coefficient of convection than distilled water. In addition, the experiment revealed that the synthesized nanofluid created a temperature drop of around 40ᵒC across the water block at a heater power of 10 W.
Analyzing Temperature Distribution in Multiple Fin Geometries to Optimize Heat Transfer Efficiency Devia Gahana Cindi Alfian; Dicky Januarizky Silitonga
VANOS Journal of Mechanical Engineering Education Vol 10, No 1 (2025)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v10i1.28606

Abstract

This study is quantitative research using Computational Fluid Dynamics (CFD) simulations to optimize pin fin design. Samples include aluminum pin fins with three different geometries: circular, square, and cone, and side lengths of 5 mm, 10 mm, and 15 mm. CFD simulations are conducted to quantitatively analyze temperature distribution across the surface and height of the fins. Results show that the highest temperature is localized at the base plate and decreases along the fin height. Circular and square fins demonstrate more uniform temperature distributions, while cone fins show significant gradients between base and tip. Smaller fin side lengths result in greater temperature differences. This research provides a detailed understanding of how fin geometry impacts heat transfer efficiency and temperature distribution, offering valuable insights for the development of more efficient fin designs in thermal management applications.
Rancang Bangun Takometer Digital dengan Sensor Inframerah Berbasis Arduino dan MATLAB Dicky Januarizky Silitonga
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 17, No. 02, Juni 2025
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/aptek.v17i2.3551

Abstract

Penelitian ini mencakup rancang bangun takometer berbasis Arduino yang dapatdigunakan sebagai alat ukur sekaligus sarana pembelajaran mekatronika. Alat inimengintegrasikan komponen elektronik sederhana, pemrograman Arduino, dan tampilanGraphical User Interface MATLAB untuk mengukur kecepatan putaran cakram secarareal-time. Rancang bangun dilakukan dengan mempertimbangkan aspek edukatif,efisiensi biaya, serta ketersediaan komponen di pasaran. Evaluasi performa alat ukurdilakukan dengan membandingkan hasil pengukuran terhadap nilai referensi dari alatukur yang telah terkalibrasi. Hasil menunjukkan penyimpangan di bawah 2% padasemua kecepatan yang diuji, dengan nilai Mean Absolute Percentage Error sebesar0,6%, menandakan tingkat akurasi yang tinggi. Takometer ini bukan hanya bisadigunakan sebagai alat ukur, namun juga dapat menjadi alat pembelajaran yang mudahdireplikasi. Lebih lanjut, rancang bangun takometer ini sangat relevan dalam mendukungkurikulum teknik mesin modern yang banyak mengarah pada aspek-aspek mekatronikauntuk memenuhi kebutuhan industri.
Edukasi Laboratorium Teknik Mesin ITERA Bagi Siswa SMKN 1 Raman Utara Dalam Meningkatkan Literasi Teknologi Paundra, Fajar; Muhyi, Abdul; Perdana Nurullah, Fajar; Pujiyulianto, Eko; Gahana Cindi Alfian, Devia; Syaukani, Muhammad; Rajagukguk, Kardo; Januarizky Silitonga, Dicky; Andi Kolala, Putra; Nanda Syanur, Farid; Aditia Prahmana, Rico
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 5 : Juni (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This community service activity aims to introduce the laboratory environment and facilities of the Mechanical Engineering Study Program at Institut Teknologi Sumatera (ITERA) to students of SMKN 1 Raman Utara, East Lampung. The activity was conducted in the form of a campus visit involving 62 12th-grade students from the Light Vehicle Engineering Department. The agenda included a presentation on higher education opportunities, interactive discussions, a Q&A session, and a direct tour of ITERA’s Mechanical Engineering laboratories, including the Materials Engineering, Energy Conversion, Fabrication, Manufacturing, Internal Combustion Engines, and Foundry laboratories. This activity was designed to inspire students to pursue higher education and broaden their understanding of engineering fields. The outcome showed a high level of enthusiasm among the students and successfully achieved the goal of introducing campus life and technological exposure. This initiative is expected to serve as an initial step in strengthening synergy between vocational high schools and higher education institutions.
Analisis Beban Pendinginan di Ruang Kelas F212 Institut Teknologi Sumatera Manurung, Daniel; Furkhan, M. Aulia; G., Gita Christo; Alfian, Devia Gahana Cindi; Silitonga, Dicky J.; Carlodinho, Samuel; Khaira, M. Irsyad Bin Iskandar
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 6 No. 2 (2025): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v6i2.21222

Abstract

Cooling load analysis in the classroom is carried out to support a comfortable learning process. Determining the cooling load is the foundation for planning an air conditioning system for a room. From the results of this determination, the capacity of the AC machine device used can be estimated. The method used in this solution is observation in the room, consisting of direct observation, measurement, and data recording. After obtaining all the data and calculating all possible heat dissipation factors, the total cooling load value in the room is 8584.34 W. The cooling capacity of the AC specifications in the room is 10040 W. Based on the results obtained, the total cooling load is lower than the cooling capacity of the AC in the room. So that the AC capacity in the room can provide comfort for the load in the room.
Co-Authors Abdul Muhyi Aditia Prahmana, Rico Ahmadien, Ichwan Kurnia Aji, Ahmad Frantoni Andhyka Tyaz Nugraha Andi Kolala, Putra Auriyani, Wika Atro Carlodinho, Samuel Chaniago, Noverto Zhorif Devia Gahana Cindi Alfian Devy Setiorini Sa’adiyah Didik Supriyadi Didik Supriyadi, Didik Dwi Hartanto Eko Pujiyulianto Fajar Paundra Firjatullah, Ahmad Labib Furkhan, M. Aulia G., Gita Christo Gahana Cindi Alfian, Devia Hidayatullah, M Taufik Jehuda, Marthin Juhensen, Jodi Kardo Rajagukguk, Kardo Khaira, M. Irsyad Bin Iskandar Khariman, Muhammad Nur Na’im Kolala, Putra Andi Lasimin Lathifa Putri A Lathifa Putri Afisna Manurung, Daniel Marcellino, Andrean Mardhiyana, Dewi Marone J Tambunan Meliala, Arvin Ade Guna Muhammad Syaukani Muhyi, Abdul Munisamy, Loganraj Nanda Syanur, Farid Nasution, Nur Baiti Nicholas Binsar Pandapotan Nurullah, Fajar Perdana Paundra, Fajar Perdana Nurullah, Fajar Petrus, Bastian Roni Prahmana, Rico Aditia Prasetyo, Tri Wahyu Pujiyulianto, Eko Riayatsyah, T. M. Indra Rico Aditia Prahmana Rifqi Sufra Samarul Fuad, Muhammad Zamir Aizat Sindhu, I Gede Pande Naraya Sitanggang, Feldrico Andreas Sitorus, Jhonatan Jufrianto Sui, Jing Xian Taurista Perdana Syawitri, Taurista Perdana Yunasdi, Hamda Yusupandi, Fauzi