Performance assessment of a biogas fuelled molten carbonate fuel cell-thermophotovoltaic cell-thermally regenerative electrochemical cycle-absorption refrigerator-alkaline electrolyzer for multigenerational applications

Abstract

In recent years there has been increasing interest in fuel cell hybrid systems. In this paper a novel multi-generation combined energy system is proposed. The system consists of a molten carbonate fuel cell (MCFC) a thermally regenerative electro-chemical cycle (TREC) a thermo photovoltaic cell (TPV) an alkaline electrolyzer (AE) and an absorption refrigerator (AR). It has four useful outputs namely electricity hydrogen cooling and heating. The overall system is thermodynamically modeled in a detailed manner while its simulation and modeling are done through the TRNSYS software tool. Power output cooling-heating and produced hydrogen rates are determined using energetic and exergetic analysis methods. Results are obtained numerically and plotted. The maximum power output from the system is 16.14 kW while maximum energy efficiency and exergy efficiency are 86.8% and 80.4%. The largest exergy destruction is due to the MCFC. © 2019 Elsevier B.V. All rights reserved.