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All Journal Emerging Science Journal Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Al Yasini : Jurnal Keislaman, Sosial, hukum dan Pendidikan Aghniya: Jurnal Ekonomi Islam Teknomekanik DedikasiMU: Journal of Community Service Asean Journal of Science and Engineering (AJSE) Borobudur Engineering Review Advance Sustainable Science, Engineering and Technology (ASSET)
Ilham Habibi, Ilham
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Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences

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Journal : Borobudur Engineering Review

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Komparasi Kinerja AC Kendaraan dengan Menggunakan Refrigeran R-134a dan R-290 Hindratmo, Dimas Bayu; Condro Purnomo, Bagiyo; Satrio Wicaksono, Akbar; Habibi, Ilham
Borobudur Engineering Review Vol 3 No 1 (2023): Industrial Technology Support
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.8898

Abstract

The development of vapor compression refrigeration systems currently depends on the issue of environmental problems related to ozone layer depletion (ODP) and global warming potential (GWP). In addition to environmental issues, low energy use is also in the spotlight of researchers. To solve the problem of refrigeration development, natural refrigeration, especially hydrocarbons, is the focus of attention. Hydrocarbons are refrigerants that have excellent properties to be natural refrigerants. This study aims to compare the performance of refrigerant R-134a with R-290. The research used a standard vapor compression refrigeration system with a TEV-type expansion valve. The system performance is seen through compression, refrigeration effect, and COP with variations in compressor rotational speed of 1000 rpm, 1500 rpm, and 2000 rpm. The results showed that the compression work, refrigeration effect, and coefficient of performance (COP) of R-290 had a more excellent value. R-290 produces the highest compression work at a 2000 rpm compressor speed of 33.34 kJ/kg for the refrigeration effect at 1000 rpm of 353.33 kJ/kg and COP at 1500 rpm 12.32.
Pengaruh Interpass-temperature pada Pengelasan SMAW Terhadap Deformasi dan Kekuatan Impak Baja ASTM A36 Muhammail, Muhammail; Saifudin, Saifudin; Habibi, Ilham
Borobudur Engineering Review Vol 4 No 01 (2024): Automatic control system
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.v4i01.11178

Abstract

Currently, welding is still very necessary for the increasingly advanced development of technology in the construction sector because it plays an important role in metal engineering and maintenance. This research aims to determine the effect of interpass temperature on deformation of weld results in ASTM A36 steel material. The method used in this research is an experimental method by measuring the deformation of the welded specimen. There are 9 specimens, the welding process uses shielded metal arc welding (SMAW), direct current reverse polarity (DCRP) with interpass temperature variations of 75 °C, 100 °C and 150 °C. The measurement results show deformation values ​​of 2.2°, 3.5° and 4° for each of the interpass temperatures of 75 °C, 100 °C and 150 °C. From the results of impact testing on specimens with interpass temperatures of 75 °C and 100 °C, it shows mixed fracture, namely brittle fracture and ductile fracture. The results of impact testing on specimens with an interpass temperature of 150 °C showed brittle fracture. The highest strength was at interpass temperature specimen of 100 °C, that is 211.79 Joules. And the lowest impact strength occurred in the interpass temperature specimen at 150 °C, that is 183.16 Joules.
Co-Authors Agiel, Raiddin Muhamad Akbar, Hammar Ilham Anindito, Dhimas Cahyo Azhari Akmal Tarigan Bagiyo Condro Purnomo Budi Waluyo Eko Surojo Fungky Dyan Pertiwi Harjo Seputro, Harjo Hindratmo, Dimas Bayu Kolakoti, Aditya Kusumadewi, Tri Vicca Majid, Faishal M. Mubarok, Bayu Lutvi Muhammail, Muhammail Muji Setiyo Nurhakim, Hasbi Pramudi, Ganjar Raharjo, Wijang W. Rahmi Syahriza, Rahmi Rifky Ismail Rochman, Muhamad Latifur Rosalina, Ranti Resmi Rusdjijati, Retno Saifudin Saifudin Saifudin Satrio Wicaksono, Akbar Siti Noor khikmah Suroto Munahar Teguh Triyono Triyono Uliyah, Ida Utami, Cici Tri Yun Arifatul Fatimah