Open AccessLaser-induced fluorescence thermometry of supercritical CO2 flows inside a micro-channel
Author(s) -
Su-Hyeon Park,
Anatoly Parahovnik,
Yoav Peles,
Subith Vasu
Publication year - 2021
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.422854
Subject(s) - materials science , supercritical fluid , optics , fluorescence , rhodamine 6g , laser induced fluorescence , laser , dye laser , rhodamine , analytical chemistry (journal) , temperature measurement , supercritical carbon dioxide , chemistry , physics , organic chemistry , chromatography , quantum mechanics
This work demonstrates a thermometric technique using laser-induced fluorescence (LIF) in supercritical carbon dioxide flows in a micro-channel. Rhodamine 6G was used as a temperature-sensitive fluorescent dye. The flow conditions were at a pressure of 7.9 MPa and temperature in the range of 23°-90°C. 2D spatial distributions and time-resolved temperature profiles were obtained at this high pressure. Measured LIF signals showed close relations to the temperatures obtained from resistance temperature detectors.