Abstract
In the process of urbanization in China, it is an important issue to achieve the effective utilization of agricultural wastes in rural areas and meet the different energy needs of rural residents. In this study, a biomass-based solid oxide fuel cell (SOFC) system coupled with ground source heat pump (GSHP) was proposed. Agricultural waste biomass was gasified to produce bio-gas for generating electricity in SOFC. The exhaust was utilized by a set of new waste heat utilization units to generate domestic hot water, solving thermal imbalance problem of soil. The thermodynamic properties of the coupling system were carried out by Aspen plus. In addition, the effects of some important operating parameters on the performance of the system were also analyzed. The results showed that on the condition of the case, the energy efficiency and exergy efficiency of the system is 67.3% and 29.2%, respectively. The primary energy saving rate of the coupling system is 24.9%, and CO2 emission reduction rate is 13.9%. The proposed system can effectively utilize agricultural waste, reducing dependence on fossil energy, and achieving energy saving and emission reduction.
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