Pub Date : 2019-11-28DOI: 10.26678/abcm.cobem2019.cob2019-2424
Moab Augusto Peixoto Pereira, G. A. Oliveira, Mateus Leite Rodrigues, Angélica Laura da Costa Bezerra, F.A.C.N. Mendonça, M. Bento, Wandembergh Santos
The objective of the article was to create a serpentine heat exchanger to reduce the temperature of the air using cold water. The system consisted of a cooper coil that received cooled water and performed the exchange of heat with the air in a room with a high degree of insulation. In thermal analysis, the overall heat transfer coefficient will be determined. It is expected to demonstrate that the heat transfer coefficient of the gases has a low value when compared to liquids. An alternative to increase the performance of the chalk changer would be to use finned coils, since they increase the area of heat exchange significantly
{"title":"CONSTRUCTION OF A SERPENTINE-TYPE HEAT EXCHANGER AND ANALYSIS OF THERMAL EFFICIENCY","authors":"Moab Augusto Peixoto Pereira, G. A. Oliveira, Mateus Leite Rodrigues, Angélica Laura da Costa Bezerra, F.A.C.N. Mendonça, M. Bento, Wandembergh Santos","doi":"10.26678/abcm.cobem2019.cob2019-2424","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-2424","url":null,"abstract":"The objective of the article was to create a serpentine heat exchanger to reduce the temperature of the air using cold water. The system consisted of a cooper coil that received cooled water and performed the exchange of heat with the air in a room with a high degree of insulation. In thermal analysis, the overall heat transfer coefficient will be determined. It is expected to demonstrate that the heat transfer coefficient of the gases has a low value when compared to liquids. An alternative to increase the performance of the chalk changer would be to use finned coils, since they increase the area of heat exchange significantly","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129104260","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}
Pub Date : 2019-11-26DOI: 10.26678/abcm.cobem2019.cob2019-0117
Lucas Cavalcante Grangeiro, Willyam Brito de Almeida Santos, K. Bessa
Karate-Do designa a arte marcial que usa o proprio corpo para fins de defesa pessoal, visando a perfeicao do carater enquanto desenvolve o dominio de todos os movimentos atraves da obtencao do equilibrio fisico e mental. O Choku-Zuki e a primeira habilidade a ser desempenhada pelo aluno no processo de treinamento, mas seu melhor desempenho e gerado a partir de uma coordenacao neuromuscular desenvolvida, cuja analise pode ser inferida atraves de padroes eletromiograficos. O presente estudo tem como objetivo analisar grupos cinesiologicamente distintos em relacao a experiencia no treinamento da arte marcial Karate-Do ao executar seus socos, correlacionando os padroes cinematicos obtidos pelo uso do Arduino em conjunto com o rastreador de movimento MPU6050, apresentando o melhor desempenho do soco e diagnosticar as principais divergencias que podem causar lesoes no processo de desenvolvimento da arte marcial.
{"title":"KINEMATIC ANALYSIS OF A KARATE PUNCH IN EXPERIENCED AND NON-EXPERIENCED PRACTITIONERS","authors":"Lucas Cavalcante Grangeiro, Willyam Brito de Almeida Santos, K. Bessa","doi":"10.26678/abcm.cobem2019.cob2019-0117","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-0117","url":null,"abstract":"Karate-Do designa a arte marcial que usa o proprio corpo para fins de defesa pessoal, visando a perfeicao do carater enquanto desenvolve o dominio de todos os movimentos atraves da obtencao do equilibrio fisico e mental. O Choku-Zuki e a primeira habilidade a ser desempenhada pelo aluno no processo de treinamento, mas seu melhor desempenho e gerado a partir de uma coordenacao neuromuscular desenvolvida, cuja analise pode ser inferida atraves de padroes eletromiograficos. O presente estudo tem como objetivo analisar grupos cinesiologicamente distintos em relacao a experiencia no treinamento da arte marcial Karate-Do ao executar seus socos, correlacionando os padroes cinematicos obtidos pelo uso do Arduino em conjunto com o rastreador de movimento MPU6050, apresentando o melhor desempenho do soco e diagnosticar as principais divergencias que podem causar lesoes no processo de desenvolvimento da arte marcial.","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123778843","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}
Pub Date : 2019-11-25DOI: 10.26678/abcm.cobem2019.cob2019-2432
Andeilson Bernardo Bezerra, G. Tapia
Concentrated Solar Energy (CSP) has been gaining ground in the world's energy matrix, given that it is a source clean, renewable and safe. Considering the potential of the Brazilian Northeast in heliothermic energy generation, this paper presents the main factors for the feasibility study of a CSP plant of central tower in three cities of the state of Rio Grande do Norte: Apodi, Caico and Mossoro. Using System Advisor Model (SAM) software as the main tool and the Gemasolar plant as a reference to for the initial design parameters, the results showed that Apodi was the most favorable for the plant's implementation of 19.9 MW, with solar multiple of 2.1, generating an optimized Levelized Cost of Electricity of 15.28 ¢/kWh and capacity factor of 61.5 %.
{"title":"FEASIBILITY STUDY OF A HELIOTHERMIC PLANT IN THE STATE OF RIO GRANDE DO NORTE","authors":"Andeilson Bernardo Bezerra, G. Tapia","doi":"10.26678/abcm.cobem2019.cob2019-2432","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-2432","url":null,"abstract":"Concentrated Solar Energy (CSP) has been gaining ground in the world's energy matrix, given that it is a source clean, renewable and safe. Considering the potential of the Brazilian Northeast in heliothermic energy generation, this paper presents the main factors for the feasibility study of a CSP plant of central tower in three cities of the state of Rio Grande do Norte: Apodi, Caico and Mossoro. Using System Advisor Model (SAM) software as the main tool and the Gemasolar plant as a reference to for the initial design parameters, the results showed that Apodi was the most favorable for the plant's implementation of 19.9 MW, with solar multiple of 2.1, generating an optimized Levelized Cost of Electricity of 15.28 ¢/kWh and capacity factor of 61.5 %.","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121328216","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}
Pub Date : 2019-11-22DOI: 10.26678/abcm.cobem2019.cob2019-0592
Yamid José García Blanco, V. Y. Urazaki, A. Franco, Eduardo M. Germer
No presente estudo experimental analisamos as especificidades do escoamento de fluidos viscoplasticos, especialmente neste caso as solucoes de Carbopol em regime laminar e turbulento atraves de uma contracao abrupta com razao de β = 1:85. O perfil e o coeficiente de queda de pressao na contracao sao obtidos a partir da entrada de diferentes numeros de Reynolds, Re0D. Os campos vetoriais de velocidade instantâneos sao obtidos para Re0D entre 1 e 10 000, usando a velocimetria por imagem de particula (PIV-2D), verificando campos vetoriais de velocidade media e quantidades turbulentas de primeira ordem, tais como flutuacoes de velocidade radial e axial, bem como comportamento da velocidade da linha central, estruturas de vortices e visualizacao de regioes nao cisalhadas. Observa-se que o coeficiente de queda de pressao para o escoamento de fluido viscoplastico depende diretamente do numero de Reynolds no regime laminar e atinge um valor constante para condicoes turbulentas, apresentando boa concordância com os dados disponiveis na atual literatura. Os perfis de velocidade ao longo da secao de teste apresentam valores inferiores aos obtidos para fluidos Newtonianos em ambos regimes e variam seu comportamento de acordo com as propriedades reologicas de cada solucao. Ademais verificam-se flutuacoes turbulentas similares ao comportamento Newtoniano, apenas com discreta diferenca nos perfis radiais. Nota-se que as regioes nao cisalhadas deformam-se com o aumento do numero de Reynolds e sao substituidas por estruturas de vortice a medida que o escoamento atinge condicoes de transicao, obtendo uma variacao do diâmetro efetivo na entrada da contracao. O desenvolvimento da estrutura do vortice foi estudado usando tecnicas quantitativas baseadas na taxa de deformacao e nos tensores de vorticidade, obtendo assim informacoes mais precisas sobre seu comportamento no escoamento de fluidos viscoplasticos. Dessa forma, pode-se determinar uma relacao entre o numero de Reynolds de entrada e o numero de Reynolds no plano da contracao, independente dos parâmetros reologicos devido as altas taxas de cisalhamento nessa regiao.
{"title":"VISUALIZATION OF VISCOPLASTIC FLUID FLOW IN AN ABRUPT CONTRACTION USING PARTICLE IMAGE VELOCIMETRY","authors":"Yamid José García Blanco, V. Y. Urazaki, A. Franco, Eduardo M. Germer","doi":"10.26678/abcm.cobem2019.cob2019-0592","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-0592","url":null,"abstract":"No presente estudo experimental analisamos as especificidades do escoamento de fluidos viscoplasticos, especialmente neste caso as solucoes de Carbopol em regime laminar e turbulento atraves de uma contracao abrupta com razao de β = 1:85. O perfil e o coeficiente de queda de pressao na contracao sao obtidos a partir da entrada de diferentes numeros de Reynolds, Re0D. Os campos vetoriais de velocidade instantâneos sao obtidos para Re0D entre 1 e 10 000, usando a velocimetria por imagem de particula (PIV-2D), verificando campos vetoriais de velocidade media e quantidades turbulentas de primeira ordem, tais como flutuacoes de velocidade radial e axial, bem como comportamento da velocidade da linha central, estruturas de vortices e visualizacao de regioes nao cisalhadas. Observa-se que o coeficiente de queda de pressao para o escoamento de fluido viscoplastico depende diretamente do numero de Reynolds no regime laminar e atinge um valor constante para condicoes turbulentas, apresentando boa concordância com os dados disponiveis na atual literatura. Os perfis de velocidade ao longo da secao de teste apresentam valores inferiores aos obtidos para fluidos Newtonianos em ambos regimes e variam seu comportamento de acordo com as propriedades reologicas de cada solucao. Ademais verificam-se flutuacoes turbulentas similares ao comportamento Newtoniano, apenas com discreta diferenca nos perfis radiais. Nota-se que as regioes nao cisalhadas deformam-se com o aumento do numero de Reynolds e sao substituidas por estruturas de vortice a medida que o escoamento atinge condicoes de transicao, obtendo uma variacao do diâmetro efetivo na entrada da contracao. O desenvolvimento da estrutura do vortice foi estudado usando tecnicas quantitativas baseadas na taxa de deformacao e nos tensores de vorticidade, obtendo assim informacoes mais precisas sobre seu comportamento no escoamento de fluidos viscoplasticos. Dessa forma, pode-se determinar uma relacao entre o numero de Reynolds de entrada e o numero de Reynolds no plano da contracao, independente dos parâmetros reologicos devido as altas taxas de cisalhamento nessa regiao.","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126610626","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}
Pub Date : 2019-07-05DOI: 10.26678/abcm.cobem2019.cob2019-0348
K. S. Ribeiro, R. Farnish, R. Coelho
Storage and distribution of solid materials, as well as control under powder discharge, has been fundamental to ore transportation and lately, Additive Manufacturing (AM). AM demands fine powders materials to be fed with high accuracy, by hoppers. It is not only the reliability of flow that becomes important but also to have a trace of repeatability of material discharges and flow characteristics. In this perspective, two types of hopper feeders have been utilized the most: screw feeder and scraper feeder. In the present work, the characteristics of a steady granular flow through an orifice in scraper feeders with a flat and conical bottom have been experimentally investigated under the influence of top ventilation. The discharge rate of granular particles of magnesium, alumina, glass beads and crushed glass have been studied as a function of the outlet diameter and the ventilation configuration. Tests were performed three times under the same configuration, which consisted for both apparatuses, a measurement of discharge time and the mass through outlet orifices of 15, 30 and 50 mm, with different vent area percentage. The results have shown that the discharge rate increases with the increasing outlet diameter and top ventilation in the majority of the materials studied. In both hopper geometries, a rise in mass flow rate was generally observed when ventilation was added to the system, even though the difference when doubled the vent area was not significant.
{"title":"EVALUATION OF THE RESTRICTED AIR ENTRY ON THE DISCHARGE RATE FROM SILOS","authors":"K. S. Ribeiro, R. Farnish, R. Coelho","doi":"10.26678/abcm.cobem2019.cob2019-0348","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-0348","url":null,"abstract":"Storage and distribution of solid materials, as well as control under powder discharge, has been fundamental to ore transportation and lately, Additive Manufacturing (AM). AM demands fine powders materials to be fed with high accuracy, by hoppers. It is not only the reliability of flow that becomes important but also to have a trace of repeatability of material discharges and flow characteristics. In this perspective, two types of hopper feeders have been utilized the most: screw feeder and scraper feeder. In the present work, the characteristics of a steady granular flow through an orifice in scraper feeders with a flat and conical bottom have been experimentally investigated under the influence of top ventilation. The discharge rate of granular particles of magnesium, alumina, glass beads and crushed glass have been studied as a function of the outlet diameter and the ventilation configuration. Tests were performed three times under the same configuration, which consisted for both apparatuses, a measurement of discharge time and the mass through outlet orifices of 15, 30 and 50 mm, with different vent area percentage. The results have shown that the discharge rate increases with the increasing outlet diameter and top ventilation in the majority of the materials studied. In both hopper geometries, a rise in mass flow rate was generally observed when ventilation was added to the system, even though the difference when doubled the vent area was not significant.","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126008017","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}
Pub Date : 1900-01-01DOI: 10.26678/abcm.cobem2019.cob2019-0257
R. Martins, eduardo artur dos santos filho, J. Santisteban
{"title":"Developing an Electric Moped Prototype","authors":"R. Martins, eduardo artur dos santos filho, J. Santisteban","doi":"10.26678/abcm.cobem2019.cob2019-0257","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-0257","url":null,"abstract":"","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114969116","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}
Pub Date : 1900-01-01DOI: 10.26678/abcm.cobem2019.cob2019-0366
M. Pasquini, E. S. Rosa
{"title":"DEPENDENCE OF ORIFICE PLATE PRESSURE DROP ON THE AREA RATIO FOR A GAS-LIQUID FLOW","authors":"M. Pasquini, E. S. Rosa","doi":"10.26678/abcm.cobem2019.cob2019-0366","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-0366","url":null,"abstract":"","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115694466","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}
Pub Date : 1900-01-01DOI: 10.26678/abcm.cobem2019.cob2019-1804
P. Santos, A. L. Souza, A. Franco
{"title":"NUMERICAL INVESTIGATION OF THE NATURAL CONVECTION PROCESS OF BINGHAM FLUID IN CLOSED CAVITY FILLED WITH HETEROGENEOUS MEDIA AND DIFFERENTLY HEATED SIDE WALLS","authors":"P. Santos, A. L. Souza, A. Franco","doi":"10.26678/abcm.cobem2019.cob2019-1804","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-1804","url":null,"abstract":"","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123103717","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}
Pub Date : 1900-01-01DOI: 10.26678/abcm.cobem2019.cob2019-2436
Mateus Coutinho de Moraes, Ana Caroline Feltrini, M. A. Menezes
{"title":"STRUCTURAL DIMENSIONING OF AN OFF-ROAD VEHICLE SUSPENSION THROUGH DROP TEST","authors":"Mateus Coutinho de Moraes, Ana Caroline Feltrini, M. A. Menezes","doi":"10.26678/abcm.cobem2019.cob2019-2436","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-2436","url":null,"abstract":"","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124399454","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}
Pub Date : 1900-01-01DOI: 10.26678/abcm.cobem2019.cob2019-2402
Carolina Palma Naveira Cotta, J. Carvalho
{"title":"Investigation of Segmented Flow Pattern for Biodiesel Synthesis in Microreactor","authors":"Carolina Palma Naveira Cotta, J. Carvalho","doi":"10.26678/abcm.cobem2019.cob2019-2402","DOIUrl":"https://doi.org/10.26678/abcm.cobem2019.cob2019-2402","url":null,"abstract":"","PeriodicalId":324886,"journal":{"name":"Proceedings of the 25th International Congress of Mechanical Engineering","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123051959","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：