Article Per Year (5 Year)
p-Index From 2019 - 2024
0.408
P-Index
This Author published in this journals
All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering
As Natio Lasman
Universitas Pancasila Jakarta
Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
ANALISIS PERPINDAHAN PANAS KONVEKSI ALAMIAH PIPA BERBENTUK C MENGGUNAKAN NANO FLUIDA AL2O3-AIR David Rusli; As Natio Lasman; Ahmad Jibril; Diah Hidayanti Sukarno
Steam Engineering Vol. 3 No. 2 (2022): STEAM Engineering, Vol. 3, No. 2, Maret 2022
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (435.735 KB) | DOI: 10.37304/jptm.v3i2.4148

Abstract

Salah satu cara untuk meningkatkan efektivitas pendinginan suatu sistim adalah dengan mencoba mengganti fluida kerjanya, yaitu dengan menggunakan nanofluida. Dalam penelitian ini digunakan nanofluida yang dibuat dari campuran air dengan partikel nano Al2O3 dengan konsentrasi sebesar 1%, 2%, 3% dan 4% dalam persen volume. Penelitian ini dilakukan dengan memodelkan suatu sistem dengan menggunakan software Computational Fluids Dynamic (CFD) yang terdiri dari pemanas berbentuk pipa C sebagai sumber panas di dalam tangki pendingin IRWST dengan nanofluida sebagai fluida pendingin yang dialirkan ke permukaan pemanas. Dari hasil perhitungan diperoleh distributsi temperatur untuk fluida pendingin nanofluida Al2O3 memiliki temperatur yang lebih rendah dibandingkan tanpa nanofluida. Selain itu juga diperoleh, pada kosentrasi 4% nanofluida Al2O3 memiliki nilai koefisien perpindahan panas 1.12 kali dibandingkan dengan koefisien perpindahan panas menggunakan air, hal ini menunjukkan bahwa nanofluida lebih efektif dipergunakan sebagai fluida pendingin dibandingkan air.
Peningkatan konduktivitas termal oli sintetis sebagai fluida pemindah panas melalui pencampuran serbuk besi Adian Rahmat; As Natio Lasman; Dwi Rahmalina
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 16, No 1 (2022): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.16.1.53-60

Abstract

Utilization of renewable energy that is specifically sourced from the sun is a good choice to be applied in Indonesia considering the high intensity of the sun and an even supply throughout the year. Utilization of this energy can be focused on solar thermal energy which is produced using solar thermal power. One of the most important parts of solar thermal power is the heat transfer fluid which functions to absorb the heat from the source and transfer it to a thermal load or heat engine. This research focuses on the process of changing the function of heat transfer fluid sourced from synthetic mineral oil. The choice of synthetic mineral oil has many advantages, especially in terms of price and availability. The main problem is the nature of synthetic mineral oil which has low thermal conductivity; thus, improvements are needed to increase thermal conductivity through the addition of sensible materials. Three samples of synthetic oil were prepared, namely oil 10W-30, 10W-40 and 20W-40 and mixed with iron powder in the range of 4 - 6% by mass. The 10W – 40 synthetic oil has the best heat transfer performance due to the low Total Base Number value. The addition of Fe powder (6 wt%) can accelerate the process of absorption and heat dissipation in synthetic lubricant base hybrid fluid. This research also obtains a critical line graph that can be used as a reference in determining the working balance of hybrid fluid in solar thermal system applications.
Co-Authors Adian Rahmat Ahmad Jibril David Rusli Diah Hidayanti Sukarno Dwi Rahmalina