Off-Design Performance Analysis of a Hybrid System Based on an Existing Molten Fuel Cell Stack

Author:

Bedont P.1,Grillo O.2,Massardo A. F.2

Affiliation:

1. Ansaldo Fuel Cells, Genova, Italy

2. Thermochemical Power Group (TPG), Dipartimento di Macchine Sistemi Energetici e Trasporti, Universita` di Genova, Genova, Italy

Abstract

This paper addresses the off-design analysis of a hybrid system (HS) based on the coupling of an existing Ansaldo Fuel Cells (formerly Ansaldo Ricerche) molten carbonate fuel cell (MCFC) stack (100 kW) and a micro gas turbine. The MCFC stack model at fixed design conditions has previously been presented by the authors. The present work refers to an off-design stack model, taking into account the influence of the reactor layout, current density, air and fuel utilization factor, CO2 recycle loop, cell operating temperature, etc. Finally, the design and off-design model of the whole hybrid system is presented. Efficiency at part load condition is presented and discussed, taking into account all the constraints for the stack and the micro gas turbine, with particular emphasis on CO2 recycle control.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Reference12 articles.

1. Parodi, F., and Sanderson, R. A., 1994, “100 kW MCFC Power Plant: Ansaldo System Analysis,” Proceedings of the 1994 Fuel Cell Seminar, FCS Organizing Committee, San Diego, CA.

2. Bosio, B., and Massardo, A. F., 2000, “Assessment of Molten Carbonate Fuel Cell Models and Integration With Gas and Steam Cycles,” ASME J. Eng. Gas Turbines Power, to be published.

3. Bedont, P., and Massardo, A. F., 2001, “Heat Recovering and Pressurisation for an Existing 100 kWe Molten Carbonate Fuel Cell,” TESEC Congress, Genoa, June (in Italian).

4. Bedont, P., 1999, “Molten Carbonate Fuel Cells Modelisation and Integration With Power Generation Plants,” Master thesis, University of Genoa (in Italian).

5. Grillo, O., 2001, “Design and Part Load Performance of a Hybrid System Based on a Molten Carbonate Fuel Cell and a Microgasturbine,” Master thesis, University of Genoa (in Italian).

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