S-CO_(2)再压缩布雷顿循环回热器特性分析  

Characteristic Analysis of Recuperators in Supercritical Carbon Dioxide Recompression Brayton Cycle

作　　者：张军辉[1] 高骥[1] 马学飞 马晓飞[1] 丁旭东[1] ZHANG Jun-hui;GAO Ji;MA Xue-fei;MA Xiao-fei;DING Xu-dong(Hangzhou Steam Turbine Co.,Ltd.,Industrial Turbine Academy,Hangzhou 310022,China)

机构地区：[1]杭州汽轮机股份有限公司工业透平研究院,杭州310022

出　　处：《汽轮机技术》2021年第6期413-418,共6页Turbine Technology

摘　　要：采用规划求解方法建立S-CO_(2)再压缩布雷顿循环的数学模型,通过计算发现,在输入热量一致的条件下,循环分流比、回热器冷端端差、回热器回热度的改变将对循环效率以及回热器损失产生影响,回热器过程压损对循环的影响不能忽略。研究参数对循环热力学性能的影响呈现单调变化关系;相比于低温回热器,高温回热器特性参数对循环做功能力的影响更为明显。In this paper,a mathematical model using programming solutionmethod was established for the Supercritical Carbon Dioxide recompression Brayton cycle.The results suggest that the variation of flow-split ratio,minimum temperature difference and effectiveness of recuperators will effectively regulate the cycle exergy efficiency and exergy loss of recuperators.The pressure drop of recuperators can't be neglected.Cycle thermodynamic performance changes monotonously with study parameters.The characteristics of high temperature recuperators have much more significant influence on cycle performance ability in comparison than those of low temperature recuperators.

关 键 词：超临界二氧化碳 再压缩 布雷顿循环 回热器 热力学分析 

分 类 号：TM7[电气工程—电力系统及自动化]