Experimental investigation on thermophysical properties of ethylene glycol based copper micro- and nanofluids for heat transfer applications
2015 (English)In: Materials Research Society Symposium Proceedings, Cambridge University Press, 2015, 69-74 p.Conference paper (Refereed)
The present work reports on the fabrication, experimental and theoretical investigatbn of thermal conductivity (TC) and viscosity of ethylene glycol (EG) based nanofluids/microfluids (NFs/MFs) containing copper nanoparticles (Cu NPs) and copper microparticles (Cu MPs). Cu NPs (20-40 nm) and Cu MPs (0.5-1.5 μm) were dispersed in EG with particle concentration from 1 wt% to 3 wt% using powerful ultrasonic agitation, and to study the real impact of dispersed particles the use of surface modifier was avoided. The objectives were to study the effect of concentration and impact of size of Cu particles on thermo-physical properties, including thermal TC and viscosity, of EG based Cu NFs/MFs. The physicochemical properties of NPs/MPs and NFs/MFs were characterized by using various techniques. The experimental results exhibited higher TC of NFs and MFs than the EG base liquid. Moreover, Cu NFs displayed higher TC than MFs showing their potential for use in some heat transfer applications. Maxwell effective medium theory as well as Einstein law of viscosity was used to compare the experimental data with the predicted values for estimating the TC and viscosity of Cu NFs/MFs, respectively.
Place, publisher, year, edition, pages
Cambridge University Press, 2015. 69-74 p.
Copper, Ethylene, Ethylene glycol, Heat transfer, Nanofluidics, Polyols, Thermodynamic properties, Viscosity, Copper microparticles, Effective medium theories, Experimental investigations, Heat transfer applications, Particle concentrations, Physicochemical property, Thermo-physical property, Ultrasonic agitation, Thermal conductivity
IdentifiersURN: urn:nbn:se:kth:diva-194649DOI: 10.1557/opl.2015.743ScopusID: 2-s2.0-84983249765ISBN: 9781510826342OAI: oai:DiVA.org:kth-194649DiVA: diva2:1050546
2015 MRS Spring Meeting, 6 April 2015 through 10 April 2015
QC 201611292016-11-292016-10-312016-11-29Bibliographically approved