Thermally induced liquid-liquid phase separation and its heat transfer at micro-scle
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Authors
Xing, Wei
Issue Date
2018-08
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Mechanical engineering
Alternative Title
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
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY