The purpose of this study is to evaluate the maximum energy-saving potential of residentia energy supply systems consisting of a solid oxide fuel cell (SOFC) cogeneration syste (CGS) combined with a solar cell (SC) and a battery (BT), compared with reference system (RS). This study applies an optimization theory into an operational plannin problem to measure actual energy demands over the course of 1 year. Eight differen types of energy supply system were compared with each other by changing the component of the SOFC-CGS, SC, BT, and RS. Meaningful numerical results are obtained indicating the maximum potential energy savings.
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