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中文摘要：
本文探索并提出控制CO2分离的低温太阳热能与清洁合成燃料甲醇-三氧化二铁化学链燃烧相结合的新颖能源动力系统。基于图象[火用]分析方法，明确地指出甲醇化学链燃烧能量释放过程燃烧[火用]损失减小和低温太阳热能品位提升的机理。从能源有效利用和环境相容出发，研究和揭示化学链燃烧与太阳能有机整合共同减小CO2分离能耗的特性规律。相比不分离常规联合循环，新系统[火用]效率提高约6．2个百分点；与分离CO2的联合循环相比，新系统[火用]效率提高约14．2个百分点。同时，低温太阳热能热转功效率可达到22．5％。
英文摘要：
This paper proposed a novel energy system with inherent CO2 separation using methanolchemical looping combustion （CLC） by low-grade solar thermal energy. With the aid of the EnergyUtilization Diagram （EUD） methodology, the relationships between the reduction of exergy destruction in the methanol-fueled CLC and the energy-level upgrading of low-temperature solar thermal energy was identified. From the viewpoint of both efficient use of energy and environment protection, this study disclosed the feature of the reduction of energy penalty for CO2 separation by integrating clean synthetic fuel and solar thermal energy. As a result, an exergy efficiency of the new system is approximately 6.2 percentage points higher than that of the conventional combined cycle without CO2 separation, 14.2 percentage points higher than that of the combined cycle with CO2 separation. And the net solar-to-electric efficiency could be expected to be about 22.5%.
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