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All Journal Rotasi Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Simetris Dinamika : Jurnal Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Tekno Insentif Jurnal Teknologi Terapan Journal of Renewable Energy and Mechanics Journal of Community Development Jurnal Vokasi Mekanika Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Journal of Artificial Intelligence and Digital Business Journal of Software Engineering and Information System (SEIS) AMMA : Jurnal Pengabdian Masyarakat Jurnal Foundry Jurnal Teknik Mesin Infact: Jurnal Sains dan Komputer TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Journal of Sciencce Technology and Visual Culture Jurnal Polimesin Jurnal Pendidikan Teknik Mesin Journal of Industrial and Mechanical Engineering
Muhammad Syaukani
Institut Teknologi Sumatera
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

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Journal : Rotasi

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The Effect of Pressure Variations on the Characteristics of Coconut Shell Based Briquettes Using Tapioca Starch Adhesive Devia Gahana Cindi Alfian; Marone J Tambunan; Fajar Paundra; Dicky J Silitonga; Lathifa Putri A; Muhammad Syaukani
ROTASI Vol 25, No 3 (2023): VOLUME 25, NOMOR 3, JULI 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.3.23-32

Abstract

The very limited availability of energy on this planet is one of the main problems that concerns almost all countries. The presence of emergency energy indicates that energy usage is very high. Therefore, encouraging the use of new and sustainable energy sources is of utmost importance. Biomass energy can be the answer to overcoming the limitations of decreasing fossil assets, especially through the production of charcoal briquettes. Biomass energy is derived from plants or easily traceable natural materials that are abundant, such as wood waste, rice husks, bagasse, and coconut shells. Coconut shells, for example, can be a primary ingredient for making charcoal briquettes, using tapioca flour or starch as an adhesive. The briquettes can be produced using pressure variations of 50 kg/cm², 60 kg/cm², and 70 kg/cm², with a drying temperature of 100°C for 3 hours. The recommended ratio for making charcoal briquettes is 3 parts coconut shell to 1 parts tapioca flour adhesive. The purpose of this study is to compare the briquettes produced with coconut shell and tapioca flour adhesive to the SNI Briquette standard No.1/6235/2000. For the conducted tests, the results were as follows: the water content was 6.06%, the ash content was 5.9695%, the carbon content was 43.5946%, and the calorific value was 34,182.6808 calories. Additionally, the substance score yield was 26.845%, and the combustion rate was 0.12179 g/minute.
Simulation Study of Pin-Type Heatsinks on Convection Heat Transfer Characteristics in Electronic Devices Chaniago, Noverto Zhorif; Alfian, Devia Gahana Cindi; Syaukani, Muhammad; Pujiyulianto, Eko; Nurullah, Fajar Perdana; Silitonga, Dicky Januarizky
ROTASI Vol 26, No 4 (2024): VOLUME 26, NOMOR 4, OKTOBER 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.4.47-53

Abstract

Electronic components are components that require an optimal design in order to provide good heat release performance. The heat sink component is a relevant solution to help cool an electronic component by flowing heat energy into the environment either naturally or forcibly with the help of a fan. The purpose of this study is to determine the effect of material type on heat sink temperature distribution, determine the phenomenon of velocity boundary layer and thermal boundary layer that occurs in each heat sink variation, determine the effect of design shape and pin arrangement on pressure drop, determine the best design according to the final results of the study. This research uses 6 variations of design shape, 2 variations of arrangement (inline and staggered), and 3 types of materials (Aluminum, Copper, and Iron). The method used in this research is a simulation method with three stages of process, namely, pre processing, processing, and post processing. The results showed that copper material is the best in conducting heat with a temperature drop of 98.5% from the base temperature. The inline arrangement obtained a lower pressure drop than the staggered arrangement and the best design was obtained by fillet square perforation with an inline arrangement.
Co-Authors Abdi Hanra Sebayang Achmad Gus Fahmi Aditia Prahmana, Rico Akasah, Ahmad Akram Tamlicha Alfian, Devia G. C Amalya, Wulan Ammar, Naufal Anugrah, Galang Arirohman, Ilham Dwi Aryadi, Anugrah Wahyu Atmaja, Muhammad Setya Bahar, Aditiya Harjon Chaniago, Noverto Zhorif Devia Gahana Cindi Alfian Devy Setiorini Sa’adiyah Dicky J. Silitonga Duwi Hariyanto Eko Pujiyulianto Fajar Paundra Fajar Paundra Ferdaus, Ferman Fikri, Muhammad Luqman Saiful Fitrah Qalbina Gahana Cindi Alfian, Devia Gita Johannes Saragih Guguk, Kardo Raja Handoyo Handoyo Harmiansyah Hendrarsakti, Joneed Hidayatullah, M Taufik Irza Sukmana, Irza Jalaluddin Jalaluddin Kardo Rajagukguk, Kardo Kenedi, Akmal Afif Khairil Khairil Khoiri, Rizky Kisna Pertiwi Kurniawan, Medy Lathifa Putri A Lathifa Putri Afisna Mahesa, Iqbal Marone J Tambunan Mufidah, Zunanik Muhyi, Abdul Naimah, Khoirun Nanda Syanur, Farid Nicholas Binsar Pandapotan Nurullah, Fajar Perdana Paundra, Fajar Perdana Nurullah, Fajar Prabowo Prabowo Prahmana, Rico Aditia Pujiyulianto, Eko Pujiyuliyanto, Eko Putra Andi Kolala Putra, Aditya Septian Putty Yunesti Rahmat Susanto Riayatsyah, Teuku Meurah Indra Rojikin, Setiyo Rojikin, Setyo Ruly Davisca Pratama Rustam Efendi Sabar Sabar Sabar Sadono, Fajar Sidik Saputra, Aprizal Sarwo Edhy Sofyan Sastra Kusuma Wijaya Siregar, Ilham Ramadhan Sofyan, Sarwo Edhy Styawati Suharno Suharno Syah, Muhammad Aksel SYANUR, FARID NANDA Taurista Perdana Syawitri, Taurista Perdana Verdia, V Daniel Wibawa, Gilang Putra Wibowo, Gilang Handi Wijaya, Muhammad Hario Yopi Rusdian Santoso Yudi Kurniawan Yunasdi, Hamda Zhafran Maulana