基于生物质气化的太阳能热辅助质子交换膜电解槽与固体氧化物燃料电池系统用于绿色电力和氢气生产：多目标优化与㶲经济分析

Abstract The industrial revolution led to technological advances but also exacerbated environmental issues, notably increasing carbon emissions. This study introduces a novel hybrid system combining photovoltaic-thermal (PVT), proton exchange membrane electrolyzer (PEME), gasification, solid oxide fuel cell (SOFC), and a Rankine cycle to address these challenges. The system features solar-assisted gasification with preheated air and water to improve syngas quality, increasing hydrogen content and enhancing combustion efficiency. The PEME unit uses excess solar electricity for green hydrogen production , ensuring a flexible clean fuel source, while oxygen produced by the PEME is injected into the SOFC cathode, improving electrochemical performance. This integrated system operates entirely on biomass-derived syngas , reducing reliance on fossil fuels. Comprehensive energy, exergy, and economic analyses confirm the system’s potential, achieving 55.03 % energy efficiency and 50.64 % exergy efficiency, with a product cost of $0.125/kWh. A multi-objective optimization study showed an energy efficiency of 74.88 %, reducing the environmental impact to 0.24 kg/kWh. The results highlight the system’s ability to optimize performance, cost-effectiveness, and environmental sustainability, offering a promising solution for industrial decarbonization.