Article Per Year (5 Year)
p-Index From 2020 - 2025
0.983
P-Index
This Author published in this journals
All Journal Rekayasa Mesin Journal of Mechanical Engineering Science and Technology EDUKATIF : JURNAL ILMU PENDIDIKAN Integrated Lab Journal METAL : Jurnal Sistem Mekanik dan Termal Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Indro Pranoto
Departemen Teknik Mesin Dan Industri, Universitas Gajah Mada
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
Home Experiment Program for Senior Mechanical Laboratory Course: A Laboratory Program during COVID-19 Pandemic Fitri Endrasari; Djati Wibowo Djamari; Indro Pranoto
EDUKATIF : JURNAL ILMU PENDIDIKAN Vol 4, No 3 (2022): June Pages 3201-5000
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/edukatif.v4i3.2725

Abstract

COVID-19 pandemic triggers the development of virtual methods in doing the experiments for laboratory classes. However, the virtual methods cannot give the students a hands-on learning experience they should get from laboratory classes. This paper aims to disseminate the Home Experiment program conducted by Mechanical Engineering study program of Sampoerna University. This program is established to allow students to conduct experiments at home so that they obtain the hands-on learning experience during the pandemic. The program is conducted through the Senior Mechanical Laboratory (SML) course, and the result from heat transfer experiment is discussed in this paper. Students are assigned to design the heat transfer experiment (guided by the lecturer), purchase the required components, assemble the components, and conduct the experiment. Aside from submitting a written report, students are also required to submit experimentation videos and present their work in a conference at the end of the semester. It is hoped that this program will become a study case for home-based learning which is crucial during the pandemic situation.
Studi Experimental Terhadap Perpindahan Kalor Pada Tumbukan Multiple Droplets Dengan Variasi Frekuensi Tetesan Indro Pranoto; Dannys Arif Kusuma; Teguh Wibowo; Fauzun Fauzun; Deendarlianto Deendarlianto; Indarto Indarto
METAL: Jurnal Sistem Mekanik dan Termal Vol 2, No 2 (2018)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.256 KB) | DOI: 10.25077/metal.2.2.26-35.2018

Abstract

The effect of drop frequencies and surface temperature on the maximum spreading ratio, heat transfer rate and heat transfer coefficient of convection have been studied experimentally. The experiments were carried out by investigating different values of drop frequencies at 250, 400 and 600 drops/minute. The surface material of stainless steel with a temperature range of 120°C to 200°C was used in the study. An image processing technique was used to measure the diameter of droplets that were captured by using a high-speed camera. The results of the study show that by increasing frequency of drops has improved significantly the maximum spreading ratio, heat transfer rate and heat transfer coefficient of convection. The results also shown that by increasing the drop frequency has increased accordingly the droplet contact with the surface. It was found that, at higher surface temperature has contributed to the increase of the heat transfer rate and convection heat transfer coefficient. This study suggest that the peak and wetting limit conditions has occurred at the surface temperature of 180°C.
CHARACTERISTICS OF BOILING BUBBLE DEPARTURE DIAMETER AND FREQUENCY FROM POROUS FOAM STRUCTURES Indro Pranoto; Umar Fadhil Ramadhan; Muhammad Habtry; Leong Kai Choong
Integrated Lab Journal Vol. 6 No. 2 (2018)
Publisher : UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (993.008 KB) | DOI: 10.14421/ilj.2018.%x

Abstract

An experimental study on the boiling phenomena and bubble dynamics from the porous graphite foams of different thermophysical properties with FC-72 dielectric coolant under saturated pool boiling condition is presented in this paper.  The pool boiling process from different graphite foams viz. “Pocofoam” of 61%, “Pocofoam” of 75%, “Kfoam” of 78% and “Kfoam” of 72% porosities were captured by using a high speed camera at 2005 frames per second and analyzed by using “Image Pro” image processing software. The bubble departure diameter and frequency from the porous foams are presented and discussed in this study. The results show that “Pocofoam” of 61% porosity has produced the smallest bubble departure diameter and highest bubble departure frequency as compared to other porous foams. It was found that the average bubble departure diameter and bubble frequency of “Pocofoam” of 61% porosity is 480.8 µm and 173 Hz, respectively.  The experimental results have also shown that the thermal properties of the porous graphite foam affected the bubble departure diameter and frequency.
Studi Eksperimental Pengaruh Geometri Pin Fins Terhadap Fenomena Flow Boiling Cahya Dhika Wicaksana; Indro Pranoto
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.886 KB)

Abstract

Perkembangan teknologi di era modern ini menuntut adanya sistem pendingin yang handal untuk melindungi teknologi yang ada di industri. Dalam penelitian ini penulis menggunakan metode sistem pendinginan flow boiling. Penelitian ini untuk mengetahui fenomena flow boiling pada struktur fin silinder dan sirip persegi dengan fluida kerja HFE-7100. Analisis dilakukan pada daya pemanasan 100 - 170 W dengan fluks massa 6,57 - 19,7 kg/m2·s. Dalam analisis fenomena pendidihan, variasi daya pemanasan berpengaruh terhadap timbulnya onset of nucleate boiling (ONB) dan jumlah bubble. Pada kedua profil, ONB untuk fluks massa 6,57 kg/m2·s terbentuk pada daya 120 W, fluks massa 13,14 kg/m2·s pada daya 120 W, dan fluks massa 19,7 kg/m2·s pada daya 130 W. Selanjutnya, di kedua fin tren peningkatan jumlah bubble terlihat meningkat untuk fluks massa 6,57 kg/m2·s pada daya pemanasan 118,6 W - 171,6 W. Kemudian pada kedua fin dengan daya pemanasan 170 W untuk fluks massa 13,14 kg/m2·s, bubble yang terbentuk lebih banyak daripada fluks massa 6,57 kg/m2·s.
PENGARUH OUTSERT TERHADAP ALIRAN DAN PERPINDAHAN KALOR PADA ANNULAR HEAT EXCHANGER TIPE HORIZONTAL Ma'a, Mustaza; Kamal, Samsul; Pranoto, Indro
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1512

Abstract

In the industrial environment, there is a need to boost heat transfer. The flow manipulation method was selected because it is less expensive, simpler to use, and more accessible. It is wise to utilize a horizontal type annular heat exchanger because it is simple and easy to manufacture. Cold fluid from the reservoir tank is pumped through the annulus in a closed system. Cold fluid passes through the Omega rotameter before it enters the experiment apparatus. The cooling system allows cold fluid to leave through the outlet and return to the reservoir tank. There are five different cold fluid flow rates, ranging from 2.5 GPM to 5 GPM. A tubular heater with a 500 W heat rate is inserted in the annular heat exchanger's midsection. The flow inside the annulus is heated by this heater. According to the results of the experiments, utilizing outsert has the potential to increase the heat transfer coefficient (h) average 89,84%, Nusselt number (Nu) average 76,76%, and friction factor (f) average 55,48%. The flow regime, which starts out in laminar circumstances and transition to quasi-turbulent and turbulent conditions at Re = 8000, is also impacted by the presence of an outsert. The thermal performance factor (η) average 1,54, which demonstrates an increase in heat transfer.
Studi Eksperimental Performa Perpindahan Kalor Sistem Pendinginan Single Phase Immersion Cooling untuk Data Center Janan, Garda Naufal; Pranoto, Indro; Fauzun, Fauzun
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 05 2025
Publisher : Institut Teknologi Adhi Tama Surabaya

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

Abstract

Data Center (DC) saat ini menjadi infrastruktur yang sangat penting. Namun, DC juga mengonsumsi sekitar 3% dari total listrik global, dan angka ini diperkirakan akan meningkat hingga 12%, di mana 45% dari konsumsi listrik DC dialokasikan untuk sistem pendinginan. Oleh karena itu, pengembangan dan pengoptimalan sistem pendingin untuk DC menjadi perhatian yang sangat krusial. Penelitian ini melakukan uji coba eksperimental untuk mengevaluasi kinerja sistem pendinginan menggunakan metode immersion cooling pada data center. Data center ditempatkan di dalam sebuah chamber yang berisi fluida dielektrik yang dialirkan dengan bantuan pompa. Penelitian ini bertujuan membandingkan kinerja metode fan cooling dengan immersion cooling. Hasil penelitian mengungkapkan bahwa temperatur CPU lebih rendah ketika menggunakan metode immersion cooling dibandingkan fan cooling. Selain itu, nilai heat transfer coefficient immersion cooling lebih tinggi. Secara keseluruhan, metode immersion cooling menunjukkan performa pendinginan yang lebih optimal dibandingkan dengan metode fan cooling. Selain itu, berdasarkan pemantauan efisiensi daya listrik melalui nilai PUE, immersion cooling terbukti lebih hemat energi dibandingkan fan cooling. Temuan ini menegaskan bahwa immersion cooling dapat menjadi alternatif solusi pendinginan yang lebih unggul bagi DC, baik dari segi kinerja termal maupun efisiensi energi, sehingga mampu mengatasi tantangan dalam sistem pendinginan konvensional.
Boiling Heat Transfer Coefficient and Critical Heat Flux on Conical Cylindrical Copper under Surface Modification Nashrullah, Muhammad Dimyati; Sanata, Andi; Solahuddin, Imam; Ilminnafik, Nasrul; Pranoto, Indro; Widyaparaga, Adhika
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 9, No 1 (2025)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v9i12025p126

Abstract

This study examined how surface roughness and nanoceramic coating, influences the boiling heat transfer coefficient (BHTC) and critical heat flux (CHF) of a conical cylindrical copper test specimen. Three test specimens exhibiting surface roughness of 0.22 µm, 0.14 µm, and 0.04 µm were analyzed for comparison. Two additional test specimens were treated with nanoceramic coatings utilizing silicon carbide as the base material: one specimen received a single-layer coating and the second was applied with a double-layer coating. The behavior of the bubbles was closely observed with a high-speed camera to deepen the analysis. The experimental results showed that the test specimen with higher surface roughness exhibited higher BHTC and CHF. The 0.22 µm surface roughness specimen demonstrated a 55.69% greater BHTC than the 0.04 µm surface roughness specimen. In contrast, the 0.04 µm surface roughness specimen had the lowest CHF, 426.09 kW/m². Nanoceramic coating also enhanced the BHTC and CHF. The specimen with a single-layer coating had the highest BHTC, 40.81% higher than the uncoated specimen. The specimen with a double-layer coating showed a 60.12% increase in CHF compared to the specimen with a single-layer coating. The bubble observation results indicated that test specimens with higher BHTC and CHF had more active nucleation sites. The quantity of active nucleation sites plays a vital role in producing a large number of bubbles, enhancing heat transfer, and maintaining the surface temperature.
Co-Authors Adhika Widyaparaga Andi Sanata Cahya Dhika Wicaksana Dannys Arif Kusuma Deendarlianto Djati Wibowo Djamari Fauzun Fauzun Fitri Endrasari Indarto Indarto Janan, Garda Naufal Leong Kai Choong Ma'a, Mustaza Muhammad Dimyati Nashrullah Muhammad Habtry Nasrul Ilminnafik Samsul Kamal Solahuddin, Imam Teguh Wibowo Umar Fadhil Ramadhan