| Autor: |
Johannes Emmert, Henrik Schneider, Christian Meißner, Evaggelos Sidiropoulos, Jonas I. Hölzer, Thomas Seeger, Benjamin Böhm, Andreas Dreizler, Steven Wagner |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Applications in Energy and Combustion Science, Vol 6, Iss , Pp 100025- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2666-352X |
| DOI: |
10.1016/j.jaecs.2021.100025 |
| Popis: |
Oxy-fuel combustion promises efficient and inexpensive carbon dioxide sequestration and is therefore subject to active experimental research. However, the transfer of mature, non-intrusive diagnostic methods for temperature measurement like Coherent Anti-Stokes Raman Spectroscopy (CARS) from air-fed to oxy-fuel systems is challenging due to the deficiency in diatomic species suitable for thermometry. Although not limited to oxy-fuel atmospheres, we demonstrate the application of linear hyperspectral absorption tomography on water vapor in a swirled oxy-fuel coal combustor as a complementary diagnostic method, supplementing reference and validation data sets. Due to the burner design an axisymmetric reconstruction of the time-averaged temperature field is conducted. To compensate the temperature bias expected when evaluating time-averaged spectroscopic data we incorporate turbulent temperature fluctuations into our spectroscopic model, providing a fluctuation measure in addition to mean temperatures. The results quantitatively agree with vibrational O2-CARS measurements and qualitatively recreate spatial structures known from particle image velocimetry (PIV) flow fields. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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