| Title: | Exergy analysis of a Brayton cycle with variable physical properties and variable composition of working substance |
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| Authors: | ID Živić, Marija (Author)
ID Galović, Antun (Author)
ID Avsec, Jurij (Author)
ID Holik, Mario (Author) |
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| Files: |  Tehnicki_vjesnik_2016_Zivic_et_al._Exergy_analysis_of_a_Brayton_cycle_with_variable_physical_properties_and_variable_composition_of_work.pdf (789,62 KB)
MD5: 745A5F28E1133A38FBBDD2589DBCBB6A
PID: 20.500.12556/dkum/82173195-d8da-419d-a88a-f82b0603c249
 http://hrcak.srce.hr/160140
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FE - Faculty of Energy Technology
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| Abstract: | The exergy analysis of a Brayton cycle is performed in the paper. The four input variables: the ratio of the compressor exit and inlet pressures, the ratio of inlet temperature of gases in turbine and inlet temperature of air in compressor and the isentropic efficiencies of the compressor and turbine are analysed. The temperature ratio is varied in a way that the compressor inlet temperature of air is maintained constant, while the turbine inlet temperature of flue gases is varied from 900 to 1200°C. In the combustion chamber methane is completely combusted with excess air ratio which is determined by the temperature of flue gases at the turbine inlet. The analysis further includes variability of the molar heat capacities of air and flue gases with temperature and variability of their heat capacity ratios. The exergy destruction in turbine, compressor and combustion chamber and also total exergy efficiency of the cycle are considered in the analysis. |
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| Keywords: | Brayton cycle, variable physical properties, variable composition of working substance, maximum work output, maximum thermal efficiency |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2016 |
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| Number of pages: | str. 801-808 |
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| Numbering: | Letn. 23, št. 3 |
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| PID: | 20.500.12556/DKUM-66811  |
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| ISSN: | 1330-3651 |
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| UDC: | 620.9 |
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| ISSN on article: | 1330-3651 |
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| COBISS.SI-ID: | 1024231260 |
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| DOI: | 10.17559/TV-20160208112755 |
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| NUK URN: | URN:SI:UM:DK:7EUNT1KT |
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| Publication date in DKUM: | 12.07.2017 |
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| Views: | 2427 |
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| Downloads: | 386 |
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| Metadata: |    |
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| Categories: | Misc.
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