热力发电2023，Vol.52Issue(11)：76-84,9.DOI:10.19666/j.rlfd.202301015
全回热超临界二氧化碳布雷顿联合循环特性及㶲经济性分析
Study on characteristics and exergo-economic analysis of completely recuperative supercritical carbon dioxide Brayton combined cycle
摘要
Abstract
The exhausted heat losses in the PRC and inefficiency in medium and low heat source applications are significant challenges affecting the application of supercritical carbon dioxide Brayton cycle for renewable energy sources.To achieve efficient utilization,a precooler-free power/cooling combined system with superior heat source adaptability is proposed and analyzed.Integrating with the precooling-heating coupled module and the absorption power/cooling module instead of the PRC,the waste heat from the LTR is completely recovered,moreover,multiple operating modes ensure that the system performance unaffected by ambient temperature and seasonal changes.Parametric studies indicate that the TUR2 inlet temperature,the WHE1 outflow overheat degree,and the hot end temperature difference have significant effects on the Split Ratio,energy outputs,and the coupling relations among modules.Moreover,due to the improvement of irreversibility and the decrease of exergy losses,the three-largest exergy destructions occur in the IHE,the TUR1,and the RET+GEN,which account for 56.1％,6.9％,and 5.2％respectively.Furthermore,the optimized cases exhibit optimal ηthermal,ηexergy,cP,total,and Wnet of 84.2％,74.1％,9.48 dollars/GJ,and 397.4 MW respectively.关键词
布雷顿发电系统/氨水吸收式系统/联合循环/㶲经济性分析Key words
Brayton power generation system/ammonia-water absorption system/combined cycle/exergo-economic analysis引用本文复制引用
韩冰川,陈永东,于改革,邹宏伟,宋嘉梁..全回热超临界二氧化碳布雷顿联合循环特性及㶲经济性分析[J].热力发电,2023,52(11):76-84,9.基金项目
安徽省自然科学基金项目(2008085ME152) （2008085ME152）
合肥通用机械研究院有限公司博士科技基金项目(2020011748) （2020011748）
安徽省重点研究与开发项目(202104a05020024)Anhui Provincial Natural Science Foundation(2008085ME152) （202104a05020024）
Doctor Science Fundation of Hefei General Machinery Research Institute(2020011748) （2020011748）
Key Research and Development Program of Anhui Province(202104a05020024) （202104a05020024）
