Exergy analysis of the diesel pre-reforming SOFC-system with anode off-gas recycling in the SchIBZ project

Part II: System exergetic evaluation

authored by

Gerardo Valadez Huerta, Johanan Álvarez Jordán, Tobias Marquardt, Michael Dragon, Keno Leites, Stephan Kabelac

Abstract

In the first part of the study, we present a model of the solid oxide fuel cell (SOFC) system with anode off-gas recirculation (AGR) in the SchIBZ-project. In this last second paper, we conduct an exergy analysis of this real SOFC plant, using validated models for the reformer and the SOFC module from our first study. We find that an optimum recirculation and low O/C-ratios yield a high exergetic efficiency, due to the small exergy losses in the conversion of chemical energy to electrical power in the SOFC-module under these operation conditions. We conduct our simulations based on a real concept and use validated models, so that the exergy analysis given in this work may be a reliable estimate to the real thermodynamic behavior of this SOFC plant.

Organisation(s)

Institute of Thermodynamics

External Organisation(s)

Thyssenkrupp MarineSystems

Type

Article

Journal

International Journal of Hydrogen Energy

Volume

44

Pages

10916-10924

No. of pages

9

ISSN

0360-3199

Publication date

23.04.2019

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment, Fuel Technology, Condensed Matter Physics, Energy Engineering and Power Technology

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1016/j.ijhydene.2018.11.207 (Access: Closed)