超临界二氧化碳与空气联合循环效率分析

郑开云

doi:10.16513/j.cnki.10-1427/tk.2019.01.002

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分布式能源 ›› 2019, Vol. 4 ›› Issue (1) : 8-12. DOI: 10.16513/j.cnki.10-1427/tk.2019.01.002

学术研究

超临界二氧化碳与空气联合循环效率分析

郑开云

作者信息 +

Supercritical Carbon Dioxide and Air Combined Cycle Efficiency Analysis

Kaiyun ZHENG

Author information +

文章历史 +

摘要

超临界二氧化碳(sCO₂)闭式循环适用于燃煤分布式发电，可采用分流再压缩循环方式，但在提高效率方面仍有不足之处。提出将sCO₂闭式循环与空气闭式循环组合成联合循环，联合循环的顶循环采用高效率的空气闭式循环。对sCO₂与空气联合循环和分流再压缩sCO₂循环发电系统的效率进行对比分析。结果表明，sCO₂与空气联合循环发电系统的效率可显著超过分流再压缩sCO₂循环，其用于分布式发电的效率可达到大型超超临界燃煤电站的水平。

Abstract

Supercritical carbon dioxide (sCO₂) closed cycle is suitable for coal-fired distributed power generation. It can adopt shunting-recompression cycle, but it still has some shortcomings for the improvement of efficiency. A combined cycle of sCO₂ closed cycle and air closed cycle is proposed. The top cycle of the combined cycle adopts an efficient air closed cycle. The efficiency of sCO₂ and air combined cycle and shunting-recompression sCO₂ closed cycle was analyzed and compared. The results show that the efficiency of the sCO₂ and air combined cycle can significantly exceed that of the shunting-recompression sCO₂ closed cycle, and its efficiency for distributed generation can reach the level of large-scale ultra-supercritical coal-fired power plant.

导出引用

郑开云. 超临界二氧化碳与空气联合循环效率分析[J]. 分布式能源. 2019, 4(1): 8-12 https://doi.org/10.16513/j.cnki.10-1427/tk.2019.01.002

Kaiyun ZHENG. Supercritical Carbon Dioxide and Air Combined Cycle Efficiency Analysis[J]. Distributed Energy Resources. 2019, 4(1): 8-12 https://doi.org/10.16513/j.cnki.10-1427/tk.2019.01.002

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