title: Concentration and size dependence of nano-silver dispersed water based nanofluids.
abstract: Nanometric silver dispersed water based nanofluids have been prepared by a single-step chemical process. The crystallite/particle size, morphology and purity of nanoparticles were characterized using standard microscopic, diffraction and spectroscopic techniques. The thermal conductivity enhancement (with respect to the base fluid) has been determined as a function of concentration and size of silver particles using transient hot-wire technique. The accurate fitting of the experimental data of thermal conductivity enhancement with a theoretical model developed by Patel et al. predicts that high specific surface area of the particles, layering at the liquid-solid interface and Brownian motion may be responsible for enhancement.
authors.affiliation: Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur, WB, India.
authors.forename: G
authors.initials: G
authors.lastname: Paul
authors.forename: S
authors.initials: S
authors.lastname: Sarkar
authors.forename: T
authors.initials: T
authors.lastname: Pal
authors.forename: P K
authors.initials: PK
authors.lastname: Das
authors.forename: I
authors.initials: I
authors.lastname: Manna