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Radissa Dzaky Issafira
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Department of Mechanical Engineering, Faculty of Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur 1st floor Giri Reka Building, East Java, Indonesia Jl. Raya Rungkut Madya, Gunung Anyar Surabaya Jawa Timur 60294 Indonesia
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Biomedical and Mechanical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Jawa Timur
ISSN : -     EISSN : 27761983     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The Biomej Journal is published by the Mechanical Engineering Study Program, Faculty of Engineering, East Java "Veteran" University, Surabaya-Indonesia. Biomej is an open-access peer review journal that mediates the dissemination of academics, researchers, and practitioners in the field of mechanical engineering and accepts journal publications from all over Indonesia. Biomej aims to provide a forum for national and international academics, researchers and mechanical engineering practitioners to publish original articles. All accepted articles will be published and will be freely available to all readers with wide visibility. The scope of the Biomej Journal is including widely topics in engineering such as: 1. Biomedical engineering 2. Tribology 3. Modelling 4. Finite ELement Method 5. Material Science 6. Mechatronics 7. Structural and Machiine Design 8. Stress Analysis 9. Renewable Energy 10. Structural Mechanics 11. Thermodynamics 12. Material Processing 13. Fatigue and Air Conditioning 14. Heat Transfer 15. Manufacturing 16. Fluid Mechanics 17. Combustion 18. Aeodynamics 19. Environmental Protection 20. Acoustic and Noise 21. Energy Studies 22. Refrigerationand Air 23. Conditioning 24. Engines and Turbines 25. Thermodynamics 26. Earth Science 27. Natural Hazards 28. Food Technology Processing
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "Vol. 4 No. 2 (2024): BIOMEJ" : 4 Documents clear
Analysis of Efficiency and Heat Transfer Coefficient in the Performance Evaluation of Shell and Tube Heat Exchanger Chalimah , S; Maulana , I; Setyobudi, R; Sandrina, A; Anggoro , R B; Buana , E S; Kartiko, M A; Alhalim, MA
BIOMEJ Vol. 4 No. 2 (2024): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v4i2.129

Abstract

Heat transfer is the process of energy transfer from a region of higher temperature to a region of lower temperature, occurring through conduction, convection, and radiation mechanisms. Understanding heat transfer is crucial in various industrial and thermodynamic applications. One commonly used device in this process is the heat exchanger, which allows heat transfer between two fluids with different temperatures without direct mixing. This research aims to evaluate the heat transfer phenomena in heat exchangers and their performance under various operational conditions. The study measured the average temperature difference, kinematic viscosity, Reynolds number, fluid velocity, heat exchanger efficiency, the average heat released and received, and the heat transfer coefficient. The results showed a high heat exchanger efficiency, with an average value of 99.53%. The heat transfer coefficient also showed significant values, varying based on fluid flow type and operational conditions. This study emphasizes the importance of selecting the appropriate type and design of heat exchanger to improve thermal system efficiency and reduce energy consumption.
Coefficient Analysis of Shell and Tube Type Heat Exchangers Hafizh, Firmansyah; Suares, Reza Mardiansah; Ikhsanudin, Zaky; Safitri, Puspa Dinda; Ghozali, Achmad Imam; DwiYanto, Agus; Firmansah, Achmad Robi; Rujianto, Andi Azrial Akbar; Saputro, Wiliandi; Issafira, Radissa Dzaky
BIOMEJ Vol. 4 No. 2 (2024): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v4i2.133

Abstract

Heat exchanger is a device used to transfer heat between two fluid systems at different temperatures. In this research, the heat exchanger used is in the form of a shell and tube which studies the mechanism of heat transfer between hot water and cold water both in contra flow. The purpose of this research is to analyze the relationship of heat transfer coefficient with changes in flow regime in shell and tube contra flow heat exchanger. This research was carried out by measuring the inlet and outlet water temperatures for the counter flow configuration, then analyzing the effectiveness calculation using the LMTD method. As a result, the inlet and outlet water temperature values for the counter flow configuration are obtained, then the effectiveness of the heat exchanger is assessed using the LMTD formula where the effectiveness of the heat exchanger for counter flow. The purpose of the research is to understand the heat exchanger system and analyze the performance of the shell and tube heat exchanger.
Data Retrieval on Heat Exchange Machines Geralfine, Hilza Arrun; Mahmudah, Imam; Perdana, Rizky Ridho; Naufal, Ananda; Hermaputra, Virendra Maulana; Bagindo, Fikran Azizi; Witjaksono, Yoga Aiman; Saputro , W
BIOMEJ Vol. 4 No. 2 (2024): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v4i2.134

Abstract

In many industrial processes, heat transfer—the movement of thermal energy from one object or medium to another—is a significant phenomena. Conduction, convection, and radiation are the three primary mechanisms via which this phenomena happens. When a temperature gradient causes heat to go from a hotter to a cooler region in a solid substance, this process is known as conduction. Heat is transferred through a moving fluid (liquid or gas) by convection, which can occur spontaneously as a result of density differences or be induced mechanically by a pump or fan. Unlike the other two methods, radiation includes the movement of energy in the form of electromagnetic waves and does not require a medium.
Analysis Effect of Light Intensity on Efficiency of the GH 100 WP-72 Solar Cell Ferdi Kurniawan; Michael Dion Lisanto; Marselinus Angga Setyo Atmojo; Muhammad Hendra Budi Satria; Nellysa Arviana Tasya; Muhammad Iqbal Habibullah; Alvin Muhammad; Radissa Dzaky Issafira
BIOMEJ Vol. 4 No. 2 (2024): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v4i2.136

Abstract

Energy is the main need today, with fossil energy sources increasingly depleting. Therefore, the development of renewable energy, such as solar energy, is very important. This article discusses the efficiency produced by solar cells in research conducted at the Energy Conversion Laboratory of the National Development University "Veteran" East Java. Solar cells are devices that convert solar energy into electrical energy through photovoltaic effects, without producing pollution or greenhouse gases, so they are an environmentally friendly energy source. Data was taken at 10.00-10.30, by measuring battery and solar panel voltage, battery charging current, and solar panel temperature. The experimental method was used by collecting data three times every 15 minutes for 30 minutes. The solar panel used is GH solar type GH 100 WP-72. Efficiency is calculated based on input and output power, with the highest efficiency achieved when the battery is full. The results show the lowest efficiency of 3.67% at 10.40 with a light intensity of 313.24 W/m² and the highest efficiency between 20.76% to 23.52% at 13.20-13.50 with a light intensity of 255.64 W/m² to 289. 61 W/m². Solar cell efficiency is greatly influenced by battery condition and light intensity.

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