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Exergy, An International Journal最新文献

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Energy- and exergy-based comparison of coal-fired and nuclear steam power plants 基于能量和火用的燃煤和核蒸汽发电厂比较
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00024-3
Marc A Rosen
{"title":"Energy- and exergy-based comparison of coal-fired and nuclear steam power plants","authors":"Marc A Rosen","doi":"10.1016/S1164-0235(01)00024-3","DOIUrl":"https://doi.org/10.1016/S1164-0235(01)00024-3","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 3","pages":"180-192"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00024-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72276742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 198
Flow through a protruding bluff body–heat and irreversibility analysis 流经突出的钝体——热量和不可逆性分析
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00027-9
S.Z Shuja, B.S Yilbas, M.O Iqbal, M.O Budair
{"title":"Flow through a protruding bluff body–heat and irreversibility analysis","authors":"S.Z Shuja, B.S Yilbas, M.O Iqbal, M.O Budair","doi":"10.1016/S1164-0235(01)00027-9","DOIUrl":"https://doi.org/10.1016/S1164-0235(01)00027-9","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 3","pages":"209-215"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00027-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72276743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Sequence method of determination of partial exergy losses in thermal systems 测定热系统部分火用损失的顺序法
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00013-9
Jan Szargut
{"title":"Sequence method of determination of partial exergy losses in thermal systems","authors":"Jan Szargut","doi":"10.1016/S1164-0235(01)00013-9","DOIUrl":"10.1016/S1164-0235(01)00013-9","url":null,"abstract":"<div><p>Partial exergy losses appearing in particular parts of thermal systems have been defined. Balance equations determining these losses have been formulated. The problem of calculation of partial exergy losses in cogeneration processes has been discussed. Sequence method of calculation of partial exergy losses has been presented. Examples of calculation of partial exergy losses have been developed.</p></div>","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 2","pages":"Pages 85-90"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00013-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72879852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
The need for exergy analysis and thermodynamic optimization in aircraft development 飞机研制中对火用分析和热力学优化的需求
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00005-X
Adrian Bejan , David L Siems
{"title":"The need for exergy analysis and thermodynamic optimization in aircraft development","authors":"Adrian Bejan ,&nbsp;David L Siems","doi":"10.1016/S1164-0235(01)00005-X","DOIUrl":"10.1016/S1164-0235(01)00005-X","url":null,"abstract":"<div><p>This paper outlines a newly emerging body of work that relies on exergy analysis and thermodynamic optimization in the design of energy systems for modern aircraft. Exergy analysis establishes the theoretical performance limit. The minimization of exergy destruction brings the design as closely as permissible to the theoretical limit. The system architecture springs out of this constrained optimization principle. A key problem is the extraction of maximum exergy from a hot gaseous stream that is gradually cooled and eventually discharged into the ambient. The optimal configuration consists of a heat transfer surface with a temperature that decays exponentially in the flow direction. This configuration can be achieved in a counterflow heat exchanger with an optimal imbalance of flow capacity rates. The same optimal configuration emerges when the surface is minimized subject to specified exergy extraction rate. Similar opportunities for optimally matching components and streams exist in considerably more complex systems for power and refrigeration. They deserve to be pursued, and can be approached first at the conceptual level, based on exergy analysis and thermodynamic optimization. The application of such principles in aircraft energy system design also sheds light on the “constructal” design principle that generates all the systems that use powered flight, engineered and natural, cf. constructal theory.</p></div>","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 1","pages":"Pages 14-24"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00005-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84543290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 99
Sensitivity of exergy efficiencies of aerospace engines to reference environment selection 航空发动机的能效对参考环境选择的敏感性
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00014-0
Jason Etele , Marc A Rosen
{"title":"Sensitivity of exergy efficiencies of aerospace engines to reference environment selection","authors":"Jason Etele ,&nbsp;Marc A Rosen","doi":"10.1016/S1164-0235(01)00014-0","DOIUrl":"10.1016/S1164-0235(01)00014-0","url":null,"abstract":"<div><p>Exergy analysis is applied to a turbojet engine over flight altitudes ranging from sea level to 15<!--> <!-->000 m (∼50<!--> <!-->000 ft), to examine the effects of using different reference-environment models. The results of this analysis using a variable reference environment (equal to the operating environment at all times) are compared to the results obtained using two constant reference environments (sea level and 15<!--> <!-->000 m). The actual rational efficiency of the turbojet decreases with increasing altitude, ranging from a value of 16.9% at sea level to 15.3% at 15<!--> <!-->000 m. In the most extreme cases considered, the rational efficiency calculated using a constant reference environment varies by approximately 2% from the variable reference environment value.</p></div>","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 2","pages":"Pages 91-99"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00014-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83798559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 77
Editorial—Exergy in industry: Accepted or not? 工业中的能源:接受还是不接受?
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00003-6
Marc A Rosen Associate Editor
{"title":"Editorial—Exergy in industry: Accepted or not?","authors":"Marc A Rosen Associate Editor","doi":"10.1016/S1164-0235(01)00003-6","DOIUrl":"10.1016/S1164-0235(01)00003-6","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 2","pages":"Page 67"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00003-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87852022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Exergy analysis of a fuel cell power system for transportation applications 运输用燃料电池动力系统的火用分析
Exergy, An International Journal Pub Date : 2001-01-01 DOI: 10.1016/S1164-0235(01)00017-6
Ryan Cownden , Meyer Nahon , Marc A. Rosen
{"title":"Exergy analysis of a fuel cell power system for transportation applications","authors":"Ryan Cownden ,&nbsp;Meyer Nahon ,&nbsp;Marc A. Rosen","doi":"10.1016/S1164-0235(01)00017-6","DOIUrl":"10.1016/S1164-0235(01)00017-6","url":null,"abstract":"<div><p>An exergy analysis of a solid polymer fuel cell power system for transportation applications is reported. The analysis was completed by implementing the fundamental governing second law equations derived for the system into a fuel cell performance model developed previously. The model analyzes all components of the system including the fuel cell stack and the air compression, hydrogen supply, and cooling subsystems. From the analysis, it was determined that the largest destruction of exergy within the system occurs inside the fuel cell stack. Other important sources of exergy destruction include irreversibilities within the hydrogen ejector and the air compressor, and the exergy associated with the heat rejected from the radiator. The results may aid efforts to optimize fuel cell systems.</p></div>","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"1 2","pages":"Pages 112-121"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1164-0235(01)00017-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115915247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 84
Flow through a protruding bluff body–heat and irreversibility analysis 通过一个突出的虚张声势的流动和不可逆性分析
Exergy, An International Journal Pub Date : 1900-01-01 DOI: 10.1016/S1164-0235(01)00027-9
S. Z. Shuja, B. Yilbas, M. Iqbal, M. Budair
{"title":"Flow through a protruding bluff body–heat and irreversibility analysis","authors":"S. Z. Shuja, B. Yilbas, M. Iqbal, M. Budair","doi":"10.1016/S1164-0235(01)00027-9","DOIUrl":"https://doi.org/10.1016/S1164-0235(01)00027-9","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"22 1","pages":"209-215"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84680844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Energy- and exergy-based comparison of coal-fired and nuclear steam power plants 以能源和火用为基础的燃煤和核蒸汽发电厂的比较
Exergy, An International Journal Pub Date : 1900-01-01 DOI: 10.1016/S1164-0235(01)00024-3
M. Rosen
{"title":"Energy- and exergy-based comparison of coal-fired and nuclear steam power plants","authors":"M. Rosen","doi":"10.1016/S1164-0235(01)00024-3","DOIUrl":"https://doi.org/10.1016/S1164-0235(01)00024-3","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"42 1","pages":"180-192"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83589472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 195
Comparing hydraulic and polytropic efficiencies with exergy efficiency 比较水力和多向效率与火用效率
Exergy, An International Journal Pub Date : 1900-01-01 DOI: 10.1016/S1164-0235(01)00025-5
G. Bisio, G. Rubatto
{"title":"Comparing hydraulic and polytropic efficiencies with exergy efficiency","authors":"G. Bisio, G. Rubatto","doi":"10.1016/S1164-0235(01)00025-5","DOIUrl":"https://doi.org/10.1016/S1164-0235(01)00025-5","url":null,"abstract":"","PeriodicalId":100518,"journal":{"name":"Exergy, An International Journal","volume":"3 1","pages":"193-201"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89242037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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