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All Journal SPEKTRUM INDUSTRI SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Sinergi Prosiding Semnastek Semesta Teknika Jurnal Konversi Energi dan Manufaktur
Sulis Yulianto
Universitas Muhammadiyah Jakarta
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Experimental investigation on stability and thermal conductivity of SiO2 nanoparticles as green nanofluids for application thermal system Ramadhan, Anwar Ilmar; Umar, Efrizon; Hendrawati, Tri Yuni; Sari, Alvika Meta; Rahardja, Istianto Budhi; Aziz, Azmairit; Firmansyah, Firmansyah; Yulianto, Sulis; Azmi, Wan Hamzah
SINERGI Vol 28, No 3 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.3.018

Abstract

In the last few years, much research has focused on the stability and improvement of the thermo-physical properties of single-component nanofluids. Some studies have not made many improvements to the stability and thermophysical properties of various types of green nanofluids from several variations of nanoparticles. Green nanofluids must be developed to improve heat transfer performance from their stability and thermal conductivity factors. Stability and thermal conductivity of Nano-silicate suspended in a base mixture of water /ethylene glycol with the ratio of 60:40, different volume concentrations were investigated. The experiments carried out were the stability of the green nanofluids investigated for volume concentrations of 0.1~0.3% and temperature conditions from 30 to 70°C for thermal conductivity measurement using TEMPOS Thermal Properties Analyzer. The experimental results showed that the stability analysis of the green nanofluids prepared by the UV-Vis method was stable up to 30 days after preparation with a sonication time of 1 hour with a ratio of 70-80%. The evaluation of the zeta potential for green nanofluids obtained a value of 33.57 mV with a moderate stability classification. The highest thermal conductivity for the green nanofluids was obtained at 0.3%, and the maximum increase was 17% higher than that of the base liquid (W/EG). Green nanofluids with a concentration of 0.1% gave the lowest effective thermal conductivity of 1.09 time at 70°C.
ANALISIS KINERJA PELAT BESI BERKARAT OLEH RUST REMOVER X Ferry Budhi Susetyo; Munzir Qadri; Fadwah Maghfurah; Sulis Yulianto
Spektrum Industri Vol. 11 No. 2: Oktober 2013
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v11i2.1656

Abstract

Rust remover akan menghilangkan seluruh karat dari permukaan logam. Terdapat tiga metode dari rust remover yaitu: rust remover berbahan dasar asam (acid base) , shoot blasting dan rust remover X. Rust remover X adalah sebuah produk yang berbahan dasar air (water based) sehingga relatif aman, efektif serta tidak berbahaya bagi lingkungan. Tujuan dari penelitian ini adalah mengetahui kapan waktu rust remover X bekerja maksimal serta fasa-fasa apa yang ada sebelum dan setelah perendaman di rust remover X. Metodologi penelitian karakterisasi spesimen dengan menggunakan SEM, XRF dan XRD. Untuk karakterisasi XRD dilakukan sebelum dan sesudah perendaman. Kesimpulan penelitian ini adalah fasa-fasa pelat besi, sebelum di rendam adalah Fe 28,2 %, Fe3O4 25,96 %, SiO2 39,43%, dan FeO2 6,4 %, fasa pelat besi, setelah di rendam adalah Fe 100 %, waktu rust remover X bekerja maksimal antara 60 menit sampai 90 menit. Kata Kunci : Korosi, besi, X Rust Remover
Co-Authors Aan Urbiantoro Achmad Mulyana Ahmad Yunus Nasution Alvika Meta Sari Andre Ryan Prasetyo Anwar Ilmar Ramadhan Argo Gianto Arie Joko Wiranto Azmairit Aziz Azmi, Wan Hamzah A’rasy Fahruddin Bambang Riyanta Bambang Setiawan Berli Paripurna Kamiel Cahya Sutowo Daud Rukmana Edi Widodo Edi Widodo, Edi Efrizon Umar Eri Diniardi Eri Diniardi Fadwah Maghfurah Fadwah Maghfurah Fadwah Maghfurah Fadwah Maghfurah Fadwah Maghfurah Fadwah Maghfurah Ferry Budhi Susetyo Ferry Budhi Susetyo Firmansyah Firmansyah Heru Prianto Hery Saputra Ilham Efendi Imam Ali Syariati Irvan Arya Widura Kamiel, Berli Paripurna Maghfurah, Fadwah Maulana, Achmad Bagas Munzir Qadri Munzir Qadri Munzir Qadri Munzir Qadri Qadri, Munzir Rahardja, Istianto Budhi Raihan Muhammad Riyanta, Bambang Soeleman Soeleman Susetyo, Ferry Budhi Thomas Junaedi Tri Yuni Hendrawati Windarta Windarta Wiranto, Arie Joko