Laser-induced fluorescence thermometry of supercritical CO2 flows inside a micro-channel
Optics Letters, 2021•opg.optica.org
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.
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.
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.
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