LAUSR

Abstract In this work, a novel integrated system based on a combination of solid oxide fuel cell (SOFC) with compressed air energy storage (CAES) and turbocharger is presented for simultaneous production of domestic hot water and power in the scale of retail buildings for peak shaving applications. The SOFC subsystem is the primary power generation unit, which is coupled with CAES and other supporting auxiliary cycles. The energy, exergy, and emissions are quantified through parametric analysis for evaluating the overall system performance. The preliminary results for the scenario analyzed indicate a power generation of 272 kW during 4 h in off-peak period, as well as a power generation of 407 kW during 7 h in peak demand periods. The round trip energy and exergy efficiencies for the integrated system are 78% and 58%, respectively. Also, the overall emissions of the proposed integrated system is reduced by 0.06 kgCO2/kWh in comparison to the standalone SOFC system. The afterburner accounts for the main source of irreversibility and exergy destruction among all components. Overall, the integrated system is superior to the standalone SOFC system from energy, exergy and emissions perspectives.