本文提出了新的CO2近零排放中低温太阳能化石能源互补系统（ZE-SOLRGT）并对其进行了热力性能分析。该系统在SOLRGT系统基础上引入纯氧燃烧，构成以水为工质的准联合循环。中低温太阳能集热与水蒸发过程相集成，改善了换热匹配，增大了工质流量，提高了输出功与热效率；并通过热化学反应品位得以提升，最终借由燃机循环实现高效热功转换。系统以低能耗实现了CO2近零排放。研究表明ZE-SOLRGT相对SOLRGT尾气排放媚损减少了50．5％，热效率提高了3．6％，实现了CO2分离与能源高效利用的一体化集成。
A novel zero CO2 emission low/mid-temperature solar heat-fossil fuel hybrid system, ZE-SOLRGT, has been proposed and analyzed. Based on the SOLRGT system and oxy-fuel com- bustion, ZE-SOLRGT is a quasi-combined cycle with water being the working fluid. The integration of solar-driven steam production helps improve both the chemical and thermal recuperation in the system, and thus contributes to system work output and efficiency enhancement. The low-mid temperature solar heat is upgraded partially into chemical exergy via the thermo-chemical reaction and achieves high efficiency conversion in the advanced power system. CO2 capture is accomplished with oxy-fuel combustion with low energy penalty. Research shows that compared with SOLRCT system, the exegy loss of flue gas in ZE-SOLRGT decreases by 50,5%, and the thermal efficiency increases by 3.6%-points. ZE-SOLRCT achieves good integration of CO2 capture and effective energy ntilizatinn.
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