Proceedings of the 4th International Modelica Conference, Hamburg, March 7-8, 2005, Gerhard Schmitz (editor) M. Rubio, A. Urquia, L. Gonz´ alez, D. Guinea, S. Dormido UNED and CSIC, Madrid, Spain FuelCell Lib - A Modelica Library for Modeling of Fuel Cells pp. 75-82 Paper presented at the 4th International Modelica Conference, March 7-8, 2005, Hamburg University of Technology, Hamburg-Harburg, Germany, organized by The Modelica Association and the Department of Thermodynamics, Hamburg University of Technology All papers of this conference can be downloaded from http://www.Modelica.org/events/Conference2005/ Program Committee Prof. Gerhard Schmitz, Hamburg University of Technology, Germany (Program chair). Prof. Bernhard Bachmann, University of Applied Sciences Bielefeld, Germany. Dr. Francesco Casella, Politecnico di Milano, Italy. Dr. Hilding Elmqvist, Dynasim AB, Sweden. Prof. Peter Fritzson, University of Linkping, Sweden Prof. Martin Otter, DLR, Germany Dr. Michael Tiller, Ford Motor Company, USA Dr. Hubertus Tummescheit, Scynamics HB, Sweden Local Organization: Gerhard Schmitz, Katrin Pr¨ olß, Wilson Casas, Henning Knigge, Jens Vasel, Stefan Wischhusen, TuTech Innovation GmbH