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ISSN Druckformat: 1065-3090
ISSN Online: 1940-4336
Indexed in
MEASUREMENT OF CONDENSATION HEAT TRANSFER COEFFICIENTS AT STRATIFIED FLOW USING LINEAR RAMAN SPECTROSCOPY
ABSTRAKT
To determine heat transfer coefficients during condensation at stratified flows in absence or presence of noncondensable gases, it is essential to either know the temperature profile in the water layer or the concentration profile in the vaporous phase with a satisfactory local resolution. The presented method to achieve those profiles is the linear Raman spectroscopy. The obtained spectra of the condensation boundary layer were processed by an algorithm that evaluates the concentration profiles in the vaporous phase and the water temperature of the liquid phase with a local resolution of 0.06 mm. The water temperatures were measured with an accuracy of ±2 K. The errors of the determined heat transfer coefficients are estimated to be less than 10%.
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Schuster Julian Jonathan, Siegler Philipp, Guenther Astrid, Wirth Karl-Ernst, Braeuer Andreas Siegfried, Simultaneous Analysis of the Dispersed Liquid and the Bulk Gas Phase of Water Sprays Using Raman Spectroscopy, Applied Spectroscopy, 70, 6, 2016. Crossref
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Schulz Christof, Sick Volker, Tracer-LIF diagnostics: quantitative measurement of fuel concentration, temperature and fuel/air ratio in practical combustion systems, Progress in Energy and Combustion Science, 31, 1, 2005. Crossref