Session: 06-08 mGT performance

Paper Number: 152917

Liquid Hydrogen Storage System for Micro Gas Turbines: Dynamic Modelling and Performance With Variable Demand Profile 

In this work, a dynamic model is used to evaluate the performance of fuel handling lines between a liquid hydrogen storage tank and a micro gas turbine (mGT). The lines are modelled using a two-phase liquid hydrogen tank, a simplified pressurizing pump, a 1D superheater/vaporizer for the pressurized hydrogen, a buffer tank, and the fuel preparation and transport lines leading to the mGT. The resulting dynamic model of the system is used to predict the behavior of the fuel lines for various hydrogen demand profiles, corresponding to changes in the power output of the associated mGT, or changes in the volumetric concentration set-point of hydrogen in the fuel blend. The ability of the system to follow these changes in load and concentration at various ramp rates is evaluated and reported. Then, following these conclusions, the crucial components, which may become limiting factors for certain demand profiles, are identified and reported as well. The model is based in MATLAB-Simulink, and is linked to the REFPROP library developed by NIST for the thermochemical properties of hydrogen, as well as the TRANSEO library developed by the Thermochemical Power Group (TPG) of the University of Genoa for the dynamic models of mGT cycles.

Presenting Author: Swatara Tucker University of Genoa

Presenting Author Biography: Swatara Tucker is a third-year PhD student with the Thermochemical Power Group (TPG) of the University of Genoa. They have undergraduate research experience in modelling the kinetics of oscillatory chemical reactions, and two summer fellowships pertaining to historical data analysis, diagnostics, and power system degradation and failure. Their current research focus pertains to the modelling of dynamics and controls of power systems; their PhD thesis will be formed around the development and use of a model for diagnostics and optimization of a power generation system using hydrogen.

Authors:

Swatara Tucker University of Genoa
Matteo Passalacqua University of Genoa
Alessandro Dotto Fincantieri S.p.A. - DSCM
Alberto Traverso University of Genoa
Giacomo Schiaffino Fincantieri S.p.A. - DSCM