Performance analysis of a plate heat exchanger using various nanofluids

Scientific paper - Original scientific paper

• Author: Dan Zheng
• Author: Jin Wang
• Author: Zhanxiu Chen
• Author: Jakov Baleta
• Author: Bengt Sundén
• Author's institution: University of Zagreb; Faculty of Metallurgy; (Department of Mechanical Metallurgy); (Laboratory of Thermal Technics and Mechanical Engineering)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract (english)

In this paper, a corrugated plate heat exchanger in solar energy systems is used to investigate heat transfer and fluid flow characteristics of various nanofluids. By adding various nanoparticles (Al2O3-30 nm, SiC-40 nm, CuO-30 nm and Fe3O4-25 nm) into the base fluid, effects of nanofluid types and particle concentrations (0.05 wt.%, 0.1 wt.%, 0.5 wt.% and 1.0 wt.%) on the thermal performance of the plate heat exchanger are analyzed at flow rates in the range of 3–9 L/min. Results indicate that both heat transfer enhancement and pressure drop for nanofluids show significant increases compared to the base fluid. The Fe3O4-water and CuO-water nanofluids show the best and the worst thermal performances of the plate heat exchanger, respectively. When 1.0 wt.% Fe3O4-water nanofluid is used as the working fluid, compared to DI-water, the convective heat transfer coefficient is increased by 21.9%. However, an increase of 10.1% in pressure drop is obtained for the 1.0 wt.% Fe3O4-water nanofluid. Finally, empirical formulas of experimental Nusselt number are obtained based on the experimental data. A new way to predict the thermal performance for various nanofluids in heat transfer systems is provided. © 2020 Elsevier Ltd

• Keywords (english): Empirical formula; Heat transfer enhancement; Nanofluid; Plate heat exchanger; Pressure drop
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: International Journal of Heat and Mass Transfer
• Numbering: vol. 158, 119993
• p-ISSN: 0017-9310
• DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2020.119993
• URN:NBN: urn:nbn:hr:115:795814
• Publication: 2020-09
• Document URL: https://linkinghub.elsevier.com/retrieve/pii/S0017931020314873
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-05-03 16:35:37