Exergetic modeling of combined cycles with inlet air cooling

Autor:	Silva, Fábio Henrique Rodrigues da [UNESP]
Přispěvatelé:	Universidade Estadual Paulista (Unesp), Balestieri, José Antônio Perrella [UNESP]
Jazyk:	portugalština
Rok vydání:	2020
Předmět:	Evaporative cooling Combined cycle Thermoeconomics Termoeconomia Inlet air-cooling Resfriamento evaporativo Ciclo Combinado Energia elétrica – consumo Refrigeração por absorção Absorption refrigeration system Refrigeração Exergy Exergia Resfriamento de entrada
Zdroj:	Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP
Popis:	Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). 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No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Submitted by Fabio Henrique Rodrigues da Silva (fabio.hr.silva@unesp.br) on 2020-03-20T15:09:48Z No. of bitstreams: 2 Dissertação Fábio Henrique Rodrigues da Silva.docx: 1763210 bytes, checksum: a7fa2702350efa38a28a27534ace9a83 (MD5) Dissertação Fábio Henrique Rodrigues da Silva PDF.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Approved for entry into archive by Pamella Benevides Gonçalves null (pamella@feg.unesp.br) on 2020-03-23T18:23:38Z (GMT) No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Made available in DSpace on 2020-03-23T18:23:39Z (GMT). No. of bitstreams: 1 silva_fhr_me_guara.pdf: 2565975 bytes, checksum: 9c45405c8a43565e38ec87c34fb7bf82 (MD5) Previous issue date: 2020-02-18 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Os ciclos a gás e combinados se beneficiam em termos de consumo de energia reduzida no compressor pelo uso de técnicas de resfriamento do ar de entrada. A análise exergética é necessária para determinar a melhor forma de resfriamento, considerando as irreversibilidades através da segunda lei da Termodinâmica, e combinando-a com uma análise termoeconômica, pode-se chegar aos custos exergéticos dos diversos fluxos mássicos. Na presente pesquisa é realizada a modelagem exergética e termoeconômica de um ciclo combinado com resfriamento do ar de entrada utilizando-se unidades de resfriamento evaporativo (RE) e sistema de refrigeração por absorção (SRA). A pesquisa envolve diferentes configurações, sendo o caso base sem refrigeração, um caso com sistema de resfriamento evaporativo e outro com sistema de refrigeração por absorção com três fontes de energia térmica (gases de exaustão, vapor de alta pressão e vapor de baixa pressão). O quarto caso consiste na combinação simultânea dos dois tipos de resfriamento mencionados. O software EES é utilizado para a realização pormenorizada das análises termodinâmicas e exergéticas do ciclo nas suas diferentes configurações, e através dos resultados obtidos, é possível realizar a análise termoeconômica, atingindo o valor dos custos envolvidos em cada processo. O objetivo deste estudo é comparar os resultados obtidos com vistas a uma melhor orientação do projeto desses sistemas. Os resultados revelam aumento de eficiência de 1,34 % para o caso que utiliza resfriamento evaporativo, média de 2,7% para o caso que utiliza sistema de refrigeração por absorção e média de 3,6% para o caso que utiliza os dois resfriamentos simultâneos e os custos exergéticos em termos de geração de potência elétrica e térmica na forma de vapor apresentam redução em comparação com o caso base, destacando-se os casos que utilizam gases de exaustão pelo menor custo de produção do fluxo, e em questão de eficiência destaca-se a utilização de vapor de baixa pressão, validando o uso do resfriamento do ar de entrada. Power gas cycles benefit in terms of reduced power consumption in the compressor by the use of inlet air cooling techniques. An exergetic analysis is necessary to determine the best form of cooling, considering irreversibility through the second law of thermodynamics and combining with a thermoeconomic analysis, one can arrive at the exergetic cost. The present research execute the exergetic and thermoeconomic modeling of a combined cycle with inlet air-cooling, using evaporative cooling units and absorption refrigeration system. The research will involve different configurations, being the base case without cooling, one case with evaporative cooling system (EC), another with absorption refrigeration system (ARS) with different thermal sources (exhaust gases, high-pressure steam and low-pressure steam). The fourth case will be the combination of the two types of cooling mentioned. The software EES will be used for the detailed realization of the thermodynamic and exergetic analyzes of the cycle in its different configurations, and through the obtained results it will be possible to perform the thermoeconomic analysis, reaching the value of the costs involved in each process. The aim of this study is to compare the results obtained with a view to a better design orientation of these systems. The results show an efficiency increase of 1.34% for the case using RE, average of 2.7% for the case using SAR, and average of 3.6% for the case using both simultaneous cooling and the exergetic costs in terms of generation of electric power and thermal in the form of steam present reduction compared to the base case, highlighting the cases that use exhaust gases for the lower cost of flow production, and in terms of efficiency, the use of low pressure steam, validating the use of inlet air cooling CAPES:1758911
Databáze:	OpenAIRE
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