Pressure effect on CHF enhancement in pool boiling of nanofluids

This paper investigates critical heat flux (CHF) in saturated pool boiling for water and TiO 2 nanofluid on a 7-mm-diameter vertical copper surface at pressures of 0.1-0.8 MPa. The nanofluid was prepared by dispersing 0.002 wt% TiO 2 nanoparticles in deionized water. The CHF of the nanofluid was enh...

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Bibliographic Details
Published in:Journal of nuclear science and technology 2016-06, Vol.53 (6), p.797-802
Main Author: Sakashita, Hiroto
Format: Article
Language:English
Subjects:
Atmospheric pressure
Barometric pressure
Boiling
critical heat flux
Deionization
experiment
high pressure
in-vessel retention
Nanofluids
Nanoparticles
pool boiling
Pools
Titanium dioxide
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Summary:This paper investigates critical heat flux (CHF) in saturated pool boiling for water and TiO 2 nanofluid on a 7-mm-diameter vertical copper surface at pressures of 0.1-0.8 MPa. The nanofluid was prepared by dispersing 0.002 wt% TiO 2 nanoparticles in deionized water. The CHF of the nanofluid was enhanced about two times over that of water boiling at atmospheric pressure. With the increasing pressure, however, the CHF enhancement with the nanofluid decreases, and almost disappears at 0.8 MPa.
ISSN:0022-3131
1881-1248
DOI:10.1080/00223131.2015.1072482