Title

Role of ions in pool boiling heat transfer of pure and silica nanofluids

Authors

Authors

D. Milanova;R. Kumar

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

THERMAL-CONDUCTIVITY; Physics, Applied

Abstract

Heat transfer in silica nanofluids at different acidity and base is measured for various ionic concentrations in a pool boiling experiment. Nanosilica suspension increases the critical heat flux 3 times compared to conventional fluids. The 10-nm particles possess a thicker double diffuse layer compared to 20-nm particles. The catalytic properties of nanofluids decrease in the presence of salts, allowing the particles to cluster and minimize the potential increase in heat transfer. Nanofluids in a strong electrolyte, i.e., in high ionic concentration, allow a higher critical heat flux than in buffer solutions because of the difference in surface area. The formation and surface structure of the deposition affect the thermal properties of the liquid. (c) 2005 American Institute of Physics.

Journal Title

Applied Physics Letters

Volume

87

Issue/Number

23

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000233723200068

ISSN

0003-6951

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