Abstract
Based on Aspen Plus, a methanol reforming Solid Oxide Fuel Cell - Humid Air Turbine - Combined cooling, heating and power (SOFC-HAT-CCHP) system based on solar methanol reforming is built in this paper, which combines (Solid Oxide Fuel Cell) SOFC with (Humid Air Turbine) HAT power generation system. This paper analyzes the performance of SOFC-HAT-CCHP system, and reveals the affinity of complementary utilization of solar energy and chemical energy. This paper optimizes the integrated design of the system and constructs a steady state model of the system's thermal calculation. The calculation results show that the total power efficiency of the method, the system total exergy efficiency and the thermal efficiency are 57.2%, 63.0% and 87.1% respectively. The results show that the introduction of HAT power generation system has increased the power generation and reduced the coal consumption rate. Compared with simple methanol reforming (Solid Oxide Fuel Cell - Gas Turbine - Combined cooling, heating and power) SOFC-GT-CCHP, the introduction of HAT effectively improves the total power generation efficiency of the system and increases 4.1% points. The exergy efficiency of increased by 4.6% points. Compared to the reference system, the standard coal consumption rate of electricity generated by the new system decreased by 16.6 g/kWh and the power generation increased by 15.5 g/kWh.
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