Wehrel, Patrick and Schöffler, Robin and Grunwitz, Clemens and Carvalho, Francisco and Plohr, Martin and Häßy, Jannik and Petersen, Anna (2023) Performance and Emissions Benefits of Cooled Ceramic Matrix Composite Vanes for High-Pressure Turbines. Journal of Engineering for Gas Turbines and Power, 145 (12). American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4063534. ISSN 0742-4795.
Full text not available from this repository.
Abstract
Ceramic matrix composites (CMCs) offer great potential for developing lighter and more efficient aero-engines. Due to their high-temperature capability, CMCs are mainly used in the hot gas section in order to replace cooled metallic components and thus save cooling air. Especially CMC vanes for high-pressure turbines (HPTs) have been researched and tested in the past. A realistic design approach for cooled CMC vanes is the so-called shell and spar concept. The application of such vanes in HPTs as inlet guide vanes (IGVs) at constant rotor inlet temperature (T41) enables performance and emissions benefits which are assessed by means of a reference engine in this paper. Compared to metallic IGVs, more temperature-resistant CMC IGVs require significantly less cooling air and generate lower cooling losses. A quantitative comparison will be presented. Consequently, the redesign of the reference engine to the setting of a hybrid HPT leads to a reduction in thrust specific fuel consumption (TSFC) by 0.23% at cruise conditions. Additionally, there is potential to extract the IGV cooling air at a lower pressure level, increasing the cruise TSFC gain to 0.41%. In the course of the redesign process, the turbine inlet temperature (T4) is reduced by 50 K in order to reach the same T41 with a lower IGV coolant mass flow. Regarding emissions, this leads to a decreased production of nitrogen oxides (NOx). Hence, several NOx emissions parameters can be reduced by more than 4%.
Item URL in elib: | https://elib.dlr.de/198611/ | ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Article | ||||||||||||||||||||||||||||||||
Title: | Performance and Emissions Benefits of Cooled Ceramic Matrix Composite Vanes for High-Pressure Turbines | ||||||||||||||||||||||||||||||||
Authors: |
| ||||||||||||||||||||||||||||||||
Date: | 26 October 2023 | ||||||||||||||||||||||||||||||||
Journal or Publication Title: | Journal of Engineering for Gas Turbines and Power | ||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||
Volume: | 145 | ||||||||||||||||||||||||||||||||
DOI: | 10.1115/1.4063534 | ||||||||||||||||||||||||||||||||
Publisher: | American Society of Mechanical Engineers (ASME) | ||||||||||||||||||||||||||||||||
ISSN: | 0742-4795 | ||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||
Keywords: | CMC, Conceptual Design, Cooling, Cooling Losses, Emissions, Hybrid Turbine, Multidimensional Modeling, NOx, Performance, SiC/SiC, Turbine | ||||||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||||||||||||||
HGF - Program Themes: | Clean Propulsion | ||||||||||||||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||||||||||||||
DLR - Program: | L CP - Clean Propulsion | ||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | L - Future Engines and Engine Integration | ||||||||||||||||||||||||||||||||
Location: | Göttingen , Köln-Porz | ||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Engine Institute of Propulsion Technology > Turbine | ||||||||||||||||||||||||||||||||
Deposited By: | Wehrel, Patrick | ||||||||||||||||||||||||||||||||
Deposited On: | 31 Oct 2023 12:47 | ||||||||||||||||||||||||||||||||
Last Modified: | 31 Oct 2023 12:47 |
Repository Staff Only: item control page