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All Journal STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Jurnal Teknik Mesin Indonesia
Ronald Akbar
Institut Teknologi Indonesia
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

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Analisis rugi kalor selama proses pemanasan pada semi-spherical plenum stainless steel 316 berdasarkan perubahan setting suhu pemanasan Zavi Indasyach Moreno; Ronald Akbar; Almira Citra Amelia; Hilman Adrian; Jeff Michael Johanes; Putut Hery Setiawan; Hyundianto Arif Gunawan; Ragil Sukarno; Darwin Rio Budi Syaka; Mulya Juarsa
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.498

Abstract

Reactor core melting in a semi-spherical geometry has released heat during severe accidents in nuclear reactors, where the heat-dissipating characteristics need to be studied. So, the study aims to determine the temperature distribution phenomenon and the heat loss rate in stainless steel 316 semi-spherical. This study used a semi-spherical plenum to simulate nuclear reactor debris by experimental methods. Experiments were carried out using four temperature variations from 50oC, 100oC, 150oC, and 200oC. The measuring instrument used is a K-type thermocouple that has been installed at 14 predetermined points. Data taken are the process of increasing and decreasing the temperature in the semi-spherical plenum and the value of the heat loss rate. Based on the experimental results, it was found that the characteristics of the increase and decrease in temperature during the heating and cooling processes at each thermocouple point tended to be the same. Heat loss values that were obtained at temperatures of 50oC, 100oC, 150oC, and 200oC were 354.235 watts, 670.714 watts, 1442.303 watts, and 2064.727 watts. The value of the heat loss will increase in proportion to the size of the setting temperature. The heat loss rate value for all experiments exceeds 50%.
Pemanfaatan Software Heat Transfer Research Inc. (HTRI) dalam Perancangan Double-Pipe Heat Exchanger Ronald Akbar
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 1 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i1.16098

Abstract

The design of a double-pipe heat exchanger has been carried out. This study aimed to compare the overall heat transfer coefficient from the double pipe heat exchanger design with the HTRI software output results. The overall heat transfer coefficient value in the manual calculation process is 221.53 W/m2K. The design process with HTRI software was carried out by inputting data from design cases into the software. From the running results, the overall heat transfer coefficient is 213.58 W/m2K. The results compared to produce a deviation of 3.67%. The results of this deviation are considered very good because it is far below the deviation value targeted in this study, which is .  The HTRI software is beneficial as a validation tool and a complement to the heat exchanger design process.
Co-Authors Almira Citra Amelia Darwin Rio Budi Syaka Hilman Adrian Hyundianto Arif Gunawan Jeff Michael Johanes Mulya Juarsa Putut Hery Setiawan Ragil Sukarno Zavi Indasyach Moreno