Thermally induced liquid-liquid phase separation and its heat transfer at micro-scle

Authors
Xing, Wei
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Other Contributors
Peles, Yoav
Borca-Tasçiuc, Diana-Andra
Chung, Aram
Plawsky, Joel L., 1957-
Issue Date
2018-08
Keywords
Mechanical engineering
Degree
PhD
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
The mixture at its critical composition was first tested in a plain micro channel with a hydraulic diameter of 667 µm. The test aimed at providing experimental evidence that such a phase change system can potentially boost the thermal transport. Our experimental result demonstrated that the phase separating flow heat transfer is up to 2.5 times greater than that of the single-phase flow of the same mixture at the same inlet conditions. A unified heat transfer characteristic was discovered which quantifies the thermal transport behavior at different geometrical conditions. The flow pattern and domain morphology are shown to be mist flow, elongated droplet flow and annular-like flow. The pressure drop was reduced after the homogenous solution gets separated. A single-phase CFD model showed that both the latent heat effect and the flow mixing effect are responsible for the better heat transfer performance.
Description
August 2018
School of Engineering
Department
Dept. of Mechanical, Aerospace, and Nuclear Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
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