• celle a combustibile
• energy loss
• fuel cell
• gas turbine
• heat loss
• heat transfer
• hybrid power plant
• ibrido
• modeling
• modello
• perdite energetiche
• SOFC
• trasmissione del calore
• turbina a gas

At DLR (German Aerospace Center), a pilot hybrid power plant made by a Solid Oxide Fuel Cell and a Gas Turbine is being built. In the present thesis, the energy losses from the hybrid power plant have been identified and modeled, in order to integrate a global system model and enhance its accuracy while keeping a high computational speed.
Firstly, the state of the scientific and technological knowledge and the existing model paradigms on the topic have been reviewed, together with the theoretical fundamentals on heat transfer and computational techniques for its modeling.
Then, various multi-dimensional models for the evaluation of heat losses from the hybrid power plant have been built for both stationary and transient operation. The real system parameters have been accounted for by building a database for material properties and components geometries. The results obtained with the different models have been compared in order to choose the paradigm that gives the lowest computational time while maintaining a feasible accuracy.