Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources
This paper reports the main results of a thermodynamic study realized on the use of a low temperature heat source (150ºC as maximum) for power generation through a subcritical Rankine power cycle with R134a as working fluid. The procedure for analyzing the behavior of the proposed cycle consisted of...
- Autores:
-
Vélez, Fredy
Chejne, Farid
Quijano, Ana
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2014
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/72204
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/72204
http://bdigital.unal.edu.co/36677/
- Palabra clave:
- Energy efficiency
organic Rankine cycle
power generation
waste heat
renewable energy
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Vélez, Fredycf9b1720-c760-4ed2-8c3f-4179b8b25b17300Chejne, Faridf70e7839-835b-420a-9e88-b624b27f7dfb300Quijano, Ana5f407faf-d2c0-4df2-8a09-22ff66391d1e3002019-07-03T14:59:17Z2019-07-03T14:59:17Z2014-06-24https://repositorio.unal.edu.co/handle/unal/72204http://bdigital.unal.edu.co/36677/This paper reports the main results of a thermodynamic study realized on the use of a low temperature heat source (150ºC as maximum) for power generation through a subcritical Rankine power cycle with R134a as working fluid. The procedure for analyzing the behavior of the proposed cycle consisted of modifying the input pressure, temperature and/or discharge pressure of the turbine with working fluid at conditions of both saturation and overheating. Results show that the efficiency of the cycle for this fluid is a weak function of temperature, i.e., overheating the inlet fluid to the turbine does not cause a significant change in the efficiency. However, when the pressure ratio in the turbine increases, it is much more efficient, and also, as the input temperature to the turbine rises, the efficiency increases more sharply. Furthermore, the effect of adding an internal heat exchanger to the cycle was analyzed, giving as a result a maximum efficiency of 11% and 14% for the basic cycle and with an internal heat exchanger, respectively.application/pdfspaUniversidad Nacional de Colombia Sede Medellínhttp://revistas.unal.edu.co/index.php/dyna/article/view/37598Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDYNA; Vol. 81, núm. 185 (2014); 153-159 Dyna; Vol. 81, núm. 185 (2014); 153-159 2346-2183 0012-7353Vélez, Fredy and Chejne, Farid and Quijano, Ana (2014) Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources. DYNA; Vol. 81, núm. 185 (2014); 153-159 Dyna; Vol. 81, núm. 185 (2014); 153-159 2346-2183 0012-7353 .Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sourcesArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTEnergy efficiencyorganic Rankine cyclepower generationwaste heatrenewable energyORIGINAL37598-166562-1-SP.pdfapplication/pdf118030https://repositorio.unal.edu.co/bitstream/unal/72204/1/37598-166562-1-SP.pdfa7d9baaf374771f1a2b78c35ab8da07fMD5137598-207738-1-PB.pdfapplication/pdf873933https://repositorio.unal.edu.co/bitstream/unal/72204/2/37598-207738-1-PB.pdf3098a64a15e42b0dac8979a21788f0edMD52THUMBNAIL37598-166562-1-SP.pdf.jpg37598-166562-1-SP.pdf.jpgGenerated Thumbnailimage/jpeg6006https://repositorio.unal.edu.co/bitstream/unal/72204/3/37598-166562-1-SP.pdf.jpg762fb74ac461f4d2e999a9a79a64d229MD5337598-207738-1-PB.pdf.jpg37598-207738-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg10483https://repositorio.unal.edu.co/bitstream/unal/72204/4/37598-207738-1-PB.pdf.jpgc1b021c20248df46280bdb83f75c8066MD54unal/72204oai:repositorio.unal.edu.co:unal/722042023-06-22 23:03:50.854Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |
| dc.title.spa.fl_str_mv |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| title |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| spellingShingle |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources Energy efficiency organic Rankine cycle power generation waste heat renewable energy |
| title_short |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| title_full |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| title_fullStr |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| title_full_unstemmed |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| title_sort |
Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources |
| dc.creator.fl_str_mv |
Vélez, Fredy Chejne, Farid Quijano, Ana |
| dc.contributor.author.spa.fl_str_mv |
Vélez, Fredy Chejne, Farid Quijano, Ana |
| dc.subject.proposal.spa.fl_str_mv |
Energy efficiency organic Rankine cycle power generation waste heat renewable energy |
| topic |
Energy efficiency organic Rankine cycle power generation waste heat renewable energy |
| description |
This paper reports the main results of a thermodynamic study realized on the use of a low temperature heat source (150ºC as maximum) for power generation through a subcritical Rankine power cycle with R134a as working fluid. The procedure for analyzing the behavior of the proposed cycle consisted of modifying the input pressure, temperature and/or discharge pressure of the turbine with working fluid at conditions of both saturation and overheating. Results show that the efficiency of the cycle for this fluid is a weak function of temperature, i.e., overheating the inlet fluid to the turbine does not cause a significant change in the efficiency. However, when the pressure ratio in the turbine increases, it is much more efficient, and also, as the input temperature to the turbine rises, the efficiency increases more sharply. Furthermore, the effect of adding an internal heat exchanger to the cycle was analyzed, giving as a result a maximum efficiency of 11% and 14% for the basic cycle and with an internal heat exchanger, respectively. |
| publishDate |
2014 |
| dc.date.issued.spa.fl_str_mv |
2014-06-24 |
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2019-07-03T14:59:17Z |
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2019-07-03T14:59:17Z |
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Artículo de revista |
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info:eu-repo/semantics/article |
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http://purl.org/coar/resource_type/c_6501 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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Text |
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http://purl.org/redcol/resource_type/ART |
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publishedVersion |
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https://repositorio.unal.edu.co/handle/unal/72204 |
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http://bdigital.unal.edu.co/36677/ |
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https://repositorio.unal.edu.co/handle/unal/72204 http://bdigital.unal.edu.co/36677/ |
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spa |
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spa |
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http://revistas.unal.edu.co/index.php/dyna/article/view/37598 |
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Universidad Nacional de Colombia Revistas electrónicas UN Dyna Dyna |
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DYNA; Vol. 81, núm. 185 (2014); 153-159 Dyna; Vol. 81, núm. 185 (2014); 153-159 2346-2183 0012-7353 |
| dc.relation.references.spa.fl_str_mv |
Vélez, Fredy and Chejne, Farid and Quijano, Ana (2014) Thermodynamic analysis of r134a in an organic rankine cycle for power generation from low temperature sources. DYNA; Vol. 81, núm. 185 (2014); 153-159 Dyna; Vol. 81, núm. 185 (2014); 153-159 2346-2183 0012-7353 . |
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Derechos reservados - Universidad Nacional de Colombia |
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Atribución-NoComercial 4.0 Internacional |
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http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
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