TITLE

Vapor generation in a nanoparticle liquid suspension using a focused, continuous laser

AUTHOR(S)
Taylor, Robert A.; Phelan, Patrick E.; Otanicar, Todd; Adrian, Ronald J.; Prasher, Ravi S.
PUB. DATE
October 2009
SOURCE
Applied Physics Letters;10/19/2009, Vol. 95 Issue 16, p161907
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter discusses experimentation with optically induced phase change in nanoparticle liquid suspensions—commonly termed nanofluids. Four different types of nanofluids at five concentrations were exposed to a ∼120 mW, 532 nm laser beam to determine the minimum laser flux needed to create vapor. Laser irradiance was varied between 0–770 W cm-2. While the experiments were simple, they involved many complex, interrelated physical phenomena, including: subcooled boiling, thermal driven particle/bubble motion, nanoparticle radiative absorption/scattering, and nanoparticle clumping. Such phenomena could enable novel solar collectors in which the working fluid directly absorbs energy and undergoes phase change in a single step.
ACCESSION #
44837258

 

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