基于SCO2封闭Brayton循环的超燃冲压发动机热电转换系统性能分析

IF 9 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-06-06 DOI:10.1016/j.renene.2025.123606

Qianqian Luo, Lei Luo, Haifeng Xing, Wei Du, Han Yan

{"title":"基于SCO2封闭Brayton循环的超燃冲压发动机热电转换系统性能分析","authors":"Qianqian Luo, Lei Luo, Haifeng Xing, Wei Du, Han Yan","doi":"10.1016/j.renene.2025.123606","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a thermoelectric conversion system (TCS) for a scramjet engine, based on the supercritical carbon dioxide (SCO2) closed Brayton cycle (CBC). A coupled model is developed, integrating the scramjet engine's combustion chamber, wall cooling channels, and the SCO2 CBC. The system's performance is analyzed under a free-stream Mach number of 7.7, with compressor outlet pressure (pC,out) varying from 17.5 MPa to 30 MPa, while considering the impact of working fluid mass flow rate (m) and recompression split ratio (xRC). The results indicate that there are crossover points in the performance between the regenerative CBC (Reg.CBC) and recompression CBC (Rec.CBC) as pC,out varies. Specifically, when pC,out is below a certain threshold, the Reg.CBC performs better, while the Rec.CBC achieves superior performance when pC,out exceeds this value. Within the parameter range studied, the optimal performance for the Reg.CBC corresponds to a thermal efficiency (ηth) of 32.33 %, net power (Pnet) of 492.01 kW, and cooling fuel mass flow rate (mfc) of 0.490 kg/s. The optimal performance for the Rec.CBC corresponds to a ηth of 35.65 %, Pnet of 541.12 kW, and mfc of 0.471 kg/s.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"254 ","pages":"Article 123606"},"PeriodicalIF":9.0000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Performance analysis of a scramjet engine thermoelectric conversion system using the SCO2 closed Brayton cycle\",\"authors\":\"Qianqian Luo, Lei Luo, Haifeng Xing, Wei Du, Han Yan\",\"doi\":\"10.1016/j.renene.2025.123606\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study presents a thermoelectric conversion system (TCS) for a scramjet engine, based on the supercritical carbon dioxide (SCO2) closed Brayton cycle (CBC). A coupled model is developed, integrating the scramjet engine's combustion chamber, wall cooling channels, and the SCO2 CBC. The system's performance is analyzed under a free-stream Mach number of 7.7, with compressor outlet pressure (pC,out) varying from 17.5 MPa to 30 MPa, while considering the impact of working fluid mass flow rate (m) and recompression split ratio (xRC). The results indicate that there are crossover points in the performance between the regenerative CBC (Reg.CBC) and recompression CBC (Rec.CBC) as pC,out varies. Specifically, when pC,out is below a certain threshold, the Reg.CBC performs better, while the Rec.CBC achieves superior performance when pC,out exceeds this value. Within the parameter range studied, the optimal performance for the Reg.CBC corresponds to a thermal efficiency (ηth) of 32.33 %, net power (Pnet) of 492.01 kW, and cooling fuel mass flow rate (mfc) of 0.490 kg/s. The optimal performance for the Rec.CBC corresponds to a ηth of 35.65 %, Pnet of 541.12 kW, and mfc of 0.471 kg/s.</div></div>\",\"PeriodicalId\":419,\"journal\":{\"name\":\"Renewable Energy\",\"volume\":\"254 \",\"pages\":\"Article 123606\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2025-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Renewable Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0960148125012686\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Renewable Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0960148125012686","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

摘要

研究了一种基于超临界二氧化碳（SCO2）闭式布雷顿循环（CBC）的超燃冲压发动机热电转换系统（TCS）。建立了一个集成了超燃冲压发动机燃烧室、壁面冷却通道和SCO2 CBC的耦合模型。在自由流马赫数为7.7、压缩机出口压力（pC,out）在17.5 ~ 30 MPa范围内变化的条件下，考虑了工质流量(m)和再压缩分流比（xRC）对系统性能的影响。结果表明，再生型CBC （Reg.CBC）和再压缩型CBC （Rec.CBC）在性能上存在交叉点。具体来说，当pC，out低于某一阈值时，Reg。CBC性能更好，而Rec.CBC在pC，out超过此值时性能更优。在所研究的参数范围内，Reg的最佳性能为。CBC对应的热效率（ηth）为32.33%，净功率（Pnet）为492.01 kW，冷却燃料质量流量（mfc）为0.490 kg/s。Rec.CBC的最佳性能为η值为35.65%，Pnet为541.12 kW， mfc为0.471 kg/s。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Performance analysis of a scramjet engine thermoelectric conversion system using the SCO2 closed Brayton cycle

This study presents a thermoelectric conversion system (TCS) for a scramjet engine, based on the supercritical carbon dioxide (SCO₂) closed Brayton cycle (CBC). A coupled model is developed, integrating the scramjet engine's combustion chamber, wall cooling channels, and the SCO₂ CBC. The system's performance is analyzed under a free-stream Mach number of 7.7, with compressor outlet pressure (p_C,out) varying from 17.5 MPa to 30 MPa, while considering the impact of working fluid mass flow rate (m) and recompression split ratio (x_RC). The results indicate that there are crossover points in the performance between the regenerative CBC (Reg.CBC) and recompression CBC (Rec.CBC) as p_C,out varies. Specifically, when p_C,out is below a certain threshold, the Reg.CBC performs better, while the Rec.CBC achieves superior performance when p_C,out exceeds this value. Within the parameter range studied, the optimal performance for the Reg.CBC corresponds to a thermal efficiency (η_th) of 32.33 %, net power (P_net) of 492.01 kW, and cooling fuel mass flow rate (m_fc) of 0.490 kg/s. The optimal performance for the Rec.CBC corresponds to a η_th of 35.65 %, P_net of 541.12 kW, and m_fc of 0.471 kg/s.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.