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All Journal Rotasi Rekayasa Mesin Sinergi REKAYASA JAIS (Journal of Applied Intelligent System) R.E.M (Rekyasa Energi Manufaktur) Jurnal Conference on Innovation and Application of Science and Technology (CIASTECH) JATI (Jurnal Mahasiswa Teknik Informatika) Jurnal Teknik Industri Terintegrasi (JUTIN) TIN: TERAPAN INFORMATIKA NUSANTARA Jurnal Rekayasa Energi dan Mekanika Jurnal Ahsana Media : Jurnal Pemikiran, Pendidikan dan Penelitian ke-Islaman Jurnal Serambi Abdimas Journal Computer Science and Informatic Systems : J-Cosys Jurnal Teknik Mesin Mechanical Xplore Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Dulang: Jurnal Pengabdian Kepada Masyarakat SmartComp Jurnal Pengabdian Sosial Jurnal Polimesin Joong-Ki Annaba: Jurnal Ilmu Jurnalistik Systematic Literature Review Journal JIFA (Journal of Islamic Finance and Accounting)
Khoirudin Khoirudin, Khoirudin
Department of Computer Applied Technology, Nanchang University, China 999 Xuefu Road, Honggutan New District, Nanchang, Jiangxi Province, P.R. China Telp:+86-791-83969099 Fax:+86-791-83969069
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Journal : rotasi

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Experimental Study of Natural Convection Heat Transfer on A Vertical Cylinder with Varying Heat Flux Rakasiwi, Galih; Khoirudin, Khoirudin; Supriyanto, Agus
ROTASI Vol 26, No 3 (2024): VOLUME 26, NOMOR 3, JULI 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.3.23-29

Abstract

The most commonly used heat transfer in cooling and heating systems is convective heat transfer. Natural convection heat transfer is typically employed in cooling systems with immersion cooling such as in data centers and transformers. In addition to cooling systems, natural convection is also utilized in heating systems as seen in nuclear reactors. More specifically, natural convection around heated cylinders has widespread applications. The flow of natural convection around vertical heated cylinders is a critical concern in various applications, including vertical tubes within HVAC systems, the heating of electronic components, and the storage of nuclear rods in waste facilities. In this study, a test apparatus in the form of a box measuring 300x200x150 mm with a 650-watt heater installed in the center was used. The heater is jacketed with an outer diameter of 38mm and a length of 195mm. Thermocouple type K are installed on the heater jacket wall and fluid. Convective heat transfer is transiently calculated with constant heat flux. The research results show that in the first phase, there is a significant increase in heat flux of 512.82 W/m2, 769.23 W/m2, and 1025.4 W/m2, respectively, at rates of 0.34, 0.46, and 0.61 ℃/minute. In phase 4, the temperature increase is relatively small, with rates of 0.01, 0.02, and 0.03 ℃/minute, respectively. Heat transfer coefficients (h), Nusselt numbers (Nu), and Rayleigh numbers (Ra) increase with increasing heat flux.
Co-Authors Afgani, Abduh Al Afif Hakim Agus , Supriyanto Agus Suprihanto AHMAD JUNAEDI Akhmad Junaedi Amar Amar Amir Amir Amri Abdulah Arif Wibowo, Ludvi Aulia Nanda, Rizki Azizah Azizah Azizah, Renata Lintang Azmi, W. H. Badriyah, Fatikhatul Banu Witono Basit, Arul Budiansyah, Ade Cepi Cahyo, Tegar Dwi Cahyono, Yono Cepi Budiansyah, Ade Dhawy, Luay Raihan Dodi Mulyadi Dodi Mulyadi Dwicahyo, Tegar Fahrizin, Nazar Fazin, Nazar Fazrin, Nazar Fuadiah, Shiema Jamalah Gymanstiar , Salman Fahrizal Hananto, Agustia Hidayat, Syahrul Taufik Ines Heidiani Ikasari Irfani, Tomas Karyadi Karyadi Khusna, Arina Kumbarasari, Shanti Lailisya Putri, Purnama Lintang Azizah, Renata Miftahudin, Moh Muahemin, Enjang Muji Setiyo Murtalim, Murtalim Muzammil, Ach Noer Sasongko Nugroho, Fajar Raditya Nurtriana Hidayati Patya, Dhea Intan Pratama, Tito Chaerul Prind Triajeng Pungkasanti, Prind Triajeng Putri, Nela Aulina Rahdiana, Nana Rahman, Mumammad Arif Rakasiwi, Galih Ramadan, Trisa Riana, Rati Ridwan Rizki Aulia Nanda Rizki Aulia, Nanda Rohman Rosaria, Stefani Dewi Safril Safril Sanusi Sanusi Saputra Sigalingging, Wanri Saputra, Ridhwan Salahuddin Saputra, Ridhwan Shalahuddin Shieddieque, Apang Djafar Sudarjat, Muhammad Fauzaan Fikri Sudarjat Suhara, Ade Sukarman Sukarman Sukarman Sukarman Sulistiyanto Sulistiyanto, Sulistiyanto Susanto, Susanto Syamsudin Syamsudin Tantri, Andini Kartika Taufik Ulhakim, Muhamad Taufik Ulhakim, Muhammad Taufiqur Rokhman, Taufiqur Thiyana, Thyana Tikamori, Ghazi Tri Toto Wiharjianto, Muhammad Ulhakim, Mumamad Taufik Wahyu Christanto, Febrian Zaidar, Chilfi