Analysis of Experimental Studies on Pool Boiling Characteristics of Nanofluids |
Author(s): |
Anil Kumar , PATEL COLLEGE OF SCIENCE AND TECHNOLOGY, BHOPAL (M.P.); Amit Kumar, PATEL COLLEGE OF SCIENCE AND TECHNOLOGY, BHOPAL (M.P.) |
Keywords: |
Pool Boiling; Nanofluids; Surfactants; Particle Deposition; Critical Heat Fluxes (CHFs); Heat Transfer Coefficient (HTC) |
Abstract |
Presently, pool boiling critical heat flux (CHFs) and heat transfer coefficient (HTC) are observed in nanofluids using alumina (Al2O3) and multiwall carbon nanotubes (MWCNTs) nanoparticles dispersed distilled water. For the purpose, pool boiling characteristics of distilled water are first observed and validated using Rohsenow's correlation. Nanofluids are used at nanoparticle weight of concentrations of 0.01%, 0.03% and 0.1%. In order to enhance the dispersion stability surfactants sodium dodecyl sulphate (SDS) and Triton X-100 are used with 1% concentration, individually. The experiment is carried out using a electrically heated stainless steel wires for studying CHFs and stainless steel cartridge heatersfor studying HTCs. The comparison of boiling CHFs is done from bare and nanoparticles deposited surfaces in distilled water. Also, the effect of adding the surfactants in the nanofluids is measured on the mentioned parameters. It is noticed that pool boiling characteristics get affected by nanoparticle concentration with added surfactants. HTC deterioration is measured with enhanced nanoparticle concentration while CHF increment is noticed with decreasing nanoparticle concentration. In all, CHFs increment upto 150% is observed, while up to 50% deterioration in HTCs is observed at heat flux is within a limit of 100kW/m2 to 500kW/m2. |
Other Details |
Paper ID: IJSRDV6I50172 Published in: Volume : 6, Issue : 5 Publication Date: 01/08/2018 Page(s): 216-219 |
Article Preview |
|
|