Mohammad Akbar Hafidz Firmansyah, Avita Ayu Permanasari, Poppy Puspitasari, Siti Nur Azella Zaine, Mohd Afzanizam Mohd Rosli
The experimental process carried out in this paper is to determine the convection heat transfer coefficient, overall heat transfer coefficient, and nanofluid heat transfer rate based on DWCNT (double-wall carbon nanotube) nanotubes applied to a shell and tube heat exchanger. The advantage of using DWCNT nanoparticles is the high thermal conductivity value. The volume fractions of nanoparticles were 0.1%, 0.3%, and 0.5% with the addition of PVP surfactant. Experimental tests were conducted to determine the heat transfer performance applied to a shell and tube type heat exchanger with upright baffles. This study aims to improve the heat transfer performance by utilizing nanofluids based on DWCNTs nanoparticles. As a result, using DWCNT nanofluids instead of base fluids increases the convective heat transfer coefficient values and overall heat transfer. The increase in the volume fraction of DWCNTs nanoparticles is also accompanied by an increase in the heat generated. The highest thermal conductivity was obtained by adding 0.5% volume of DWCNTs nanoparticles, which was 0.640 W/m.K. The highest heat transfer rate was produced by adding 0.5% volume fraction and 0.02% PVP with a result value of 70.191 W. © 2024 American Institute of Physics Inc.. All rights reserved.
Department of Mechanical Engineering, Faculty of Engineering, State University of Malang, Semarang 5, East Java, Malang, 65145, Indonesia; Centre of Advanced Materials for Renewable Energy (CAMRY), State University of Malang, Semarang 5, East Java, Malang, 65145, Indonesia; Department of Fundamental and Applied Science, Faculty of Science and Information Technology, Petronas University of Technology, Bandar Seri Iskandar, Perak, Tronoh, 32610, Malaysia; Department of Mechanical Engineering, Faculty of Mechanical Engineering, Technical University of Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal, Melaka, 76100, Malaysia
