The EU project HYLENA (Hydrogen eLectrical Engine Novel Architecture) is developing a highly efficient propulsion concept for civil aviation. A solid oxide fuel cell (SOFC) is integrated into a gas turbine system (GT), allowing the waste heat from the fuel cell to be utilized. This enables thermal efficiencies of over 60%.
The HYLENA project is divided into a total of six work packages. The Institute of Thermodynamics is responsible for work packages WP2 (SOFC Stack Design, Testing, and Technology Development) and WP3 (Engine Thermodynamic Cycle Analysis). In addition, the institute is participating in the other work packages WP1 (SOFC Material and Cell Characterization), WP4 (Engine Conceptual Design and Integration Study), WP5 (Overall Performance Benchmarking and Climate Impact), and WP6 (Demonstrator Identification and Requirements). Overall, the HYLENA project covers every aspect from SOFC research to cycle analysis and integration to the planning of a future demonstrator for the system developed in the project.
SOFC Research and Analysis
Work package 2 examines SOFC cells and stacks as a central element of the engine. The aim is to analyze current and future stack concepts in terms of power density and dynamics and to develop a technology roadmap. Based on these results, models for thermodynamic cycle studies are created and validated. In addition, experimental tests and simulations are carried out to evaluate the properties of future high-performance stacks and investigate their suitability for mobile, flight-relevant applications. The institute's research focuses primarily on numerical methods for the further development of SOFC technology.
Thermodynamic Cycle Analysis
Due to the necessary preheating of the fluids before they enter the fuel cell, various configurations of SOFC-GT systems are possible. The aim of work package 3 is to conduct a thermodynamic investigation of potentially feasible SOFC-GT engines with different heat integration concepts in terms of efficiency, thermal robustness, and load flexibility. Numerical methods are used to model and simulate the overall system in order to thermodynamically analyze and evaluate the identified system architectures.
Cooperation Partners in the HYLENA Project
Project Funding
Funded by the European Union. However, the views and opinions expressed are solely those of the authors and do not necessarily reflect those of the European Union or CINEA (European Climate, Infrastructure and Environment Executive Agency). Neither the European Union nor the granting authority can be held responsible for them.
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SOFC Development and Analysis
30823 Garbsen
SOFC-GT Cycle Analysis
30823 Garbsen
