Reza Aditiya Pratama, Dicky Seprianto, Yogi Eka Fernandes
rezaaditiya.p1105@gmail.com; dicky@polsri.ac.id; yogi.eka.fernandes@polsri.ac.id
1Program Studi Teknik Mesin Produksi dan Perawatan, Jurusan Teknik Mesin, Politeknik Negeri Sriwijaya
2Jurusan Teknik Mesin, Politeknik Negeri Sriwijaya
Jl. Srijaya Negara Bukit Besar, Palembang 30139, Indonesia
Pendahuluan meliputi Latar Belakang, Tujuan dan Manfaat serta Keterbaruan Penelitian.
Ukuran Font pada isian Pendahuluan, Metodologi Penelitian, Hasil dan Pembahasan, Kesimpulan serta Ucapan Terima Kasih dibuat dengan ukutan 32pt dengan jumlah kata maksimal 250 Kata.
Pendahuluan
Metodologi Penelitian
Hasil dan Pembahasan
Ucapan Terima Kasih
Optimasi Desain Spreader Beam Menggunakan Metode Finite Elemen Analysis (FEA) Untuk Meningkatkan Kapasitas Angkat
Gambar 1. Variation of thermal conductivity and viscosity with temperature
Gambar 2. Variation of thermal conductivity with temperature
Penelitian ini didukung oleh Jurusan Teknik Mesin Politeknik Negeri Sriwijaya dan PT. Surveyor Indonesia sebagai mitra industri.
3.1. Thermophysical Properties of Base fluid
In this work, the thermophysical properties of base fluid have been investigated by the empirical correlation function of temperature as reported by our previous work [5]. The results of validation for pure water for the experimental results obtained from the thermophysical properties, especially for thermal conductivity and viscosity of base fluid are demonstrated in Gambar 1.
3.2. Thermophysical Properties of Nanofluid
Gambar 2 shows the variation of thermal conductivity of nanofluid with temperature and volume concentration 0.05; 0.15; 0.30 vol%. Increased temperatures of nanofluid with increased thermal conductivity of TiO2/water nanofluid. Enhancing thermal conductivity of nanofluid role of heat transfer application. Increasing thermal conductivity for volume concentration 0.05; 0.15; and 0.30 vol% were 0.45%; 1.34%, and 2.69%, respectively, and these values were higher than those obtained from the thermal conductivity for base fluid. Various studies reported in the literature show that dispersion of nanoparticles into heat transfer fluid was significant enhancement in heat transfer coefficient.
Gambar 3 shows the relationship between the viscosity of TiO2/water nanofluid with different volume concentrations. With both base fluid and TiO2/water, the viscosity of nanofluid was higher compared to base fluid and it gradually decreased with the increase in temperature.
D-IV Teknik Mesin Produksi dan Perawatan
Tahun Akademik 2024/2025
Kesimpulan
The research on nanofluid can be concluded that the dispersion nanoparticle for low-concentration nanoparticles contributes to enhancing thermal conductivity without increasing viscosity significantly.
Gambar 3. Variation of viscosity with temperature
The first step of the synthesis of nanofluid was to weigh the required weight of nanoparticle for each volume concentration (0.05; 0.15; 0.30vol.%). Then the next step is to dispersion the nanoparticle into the base fluid using a magnetic stirrer and ultrasonic bath for both are 1 hour. The volume concentration of nanofluid was expressed in the following equation (1). The determine the thermal conductivity of nanofluid, the empirical equation was expressed as follows eq. (2) ; Viscosity effectiveness of nanofluid, the empirical equation was expressed as follows eq. (3) :
(1) (2) (3)
Gambar 4. ……………………………………………