Pub Date : 2021-04-05DOI: 10.18226/23185279.V9ISS1P30
R. Bornéo, Mateus Müller Franco, B. C. Orlandin, Nathalia Tessari Moraes, L. Corso
This study defines the best model for a chemical waste plant where the Artificial Neural Network (ANN) and the Integrated Auto Regressive Moving Average Model (ARIMA) were applied as tools for predicting future maintenance cost data. These methods were applied together considering the criteria as follows: plant size, process cost, treatment flexibility, environmental safety and maintenance cost. For this, a decision-making model was developed using the Hierarchical Analysis Method (AHP) with which the company can decide from three alternatives of waste plant models. As a result, the recommendation and solution provide by the multicriteria method was the choice of the alternative 3 of a waste center. This solution indicated the best alternative considering the criteria selected by the company and also the data from RNA and ARIMA In this case, the model presented an index above 70% both in the final aggregation and in the sensitivity analysis.
{"title":"Application of Analytic Hierarchy Process Considering Artificial Neural Network and ARIMA for Selecting a Chemical Waste Plant","authors":"R. Bornéo, Mateus Müller Franco, B. C. Orlandin, Nathalia Tessari Moraes, L. Corso","doi":"10.18226/23185279.V9ISS1P30","DOIUrl":"https://doi.org/10.18226/23185279.V9ISS1P30","url":null,"abstract":"This study defines the best model for a chemical waste plant where the Artificial Neural Network (ANN) and the Integrated Auto Regressive Moving Average Model (ARIMA) were applied as tools for predicting future maintenance cost data. These methods were applied together considering the criteria as follows: plant size, process cost, treatment flexibility, environmental safety and maintenance cost. For this, a decision-making model was developed using the Hierarchical Analysis Method (AHP) with which the company can decide from three alternatives of waste plant models. As a result, the recommendation and solution provide by the multicriteria method was the choice of the alternative 3 of a waste center. This solution indicated the best alternative considering the criteria selected by the company and also the data from RNA and ARIMA In this case, the model presented an index above 70% both in the final aggregation and in the sensitivity analysis.","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88557765","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 : 2021-02-18DOI: 10.18226/23185279.V9ISS1P24
Nicolas Martins Nunes, C. Costa
Num ambiente globalizado e competitivo, e de interesse das organizacoes alinharem seus recursos dentro de estrategias definidas objetivando melhores resultados. A Manufatura Enxuta e uma abordagem utilizada para maximizacao de resultados das empresas, sendo considerada por alguns autores como um elemento de apoio para atingir a estrategia competitiva das empresas e por outros como uma estrategia competitiva em si. Esse artigo apresenta um estudo sobre o uso da Manufatura Enxuta como elemento de apoio a definicao de estrategia das empresas. Foram avaliados, por meio de uma pesquisa bibliometrica, artigos de periodicos das bases de dados Scopus e Web of Science entre os anos de 2010 a 2020. Do total de artigos pesquisados foram selecionados 21 artigos para o estudo. O objetivo foi avaliar a percepcao de autores mais recentes sobre o uso da Manufatura Enxuta como uma estrategia de producao e operacao, associando a mesma aos criterios competitivos de custo, qualidade, prazo de entrega e flexibilidade. Os resultados apresentam as particularidades na implementacao do modelo enxuto em empresas de diferentes portes, alem das relacoes entre os criterios competitivos e o conceito de pacotes lean. A pesquisa realizada corrobora para a importância da Manufatura Enxuta para aumentar a competitividade do negocio em ambientes organizacionais. http://dx.doi.org/10.18226/23185279.v9iss1p24
在全球化和竞争的环境中，为了组织的利益，将他们的资源调整到确定的战略中，以获得更好的结果。精益制造是一种用于最大化公司结果的方法，被一些作者认为是实现公司竞争战略的支持元素，也被其他人认为是一种竞争战略本身。本文对精益制造作为企业战略定义支持元素的使用进行了研究。通过文献计量学研究，对2010年至2020年Scopus和Web of Science数据库中的期刊文章进行了评估。在搜索的文章中，选择了21篇文章进行研究。目的是评估最近的作者对使用精益制造作为生产和运营策略的看法，将其与成本、质量、交货时间和灵活性等竞争标准联系起来。结果显示了在不同规模的公司中实施精益模型的特殊性，以及竞争标准和精益包概念之间的关系。该研究证实了精益制造在组织环境中提高企业竞争力的重要性。http://dx.doi.org/10.18226/23185279.v9iss1p24
{"title":"Lean Manufacturing como Estratégia Competitiva de Produção","authors":"Nicolas Martins Nunes, C. Costa","doi":"10.18226/23185279.V9ISS1P24","DOIUrl":"https://doi.org/10.18226/23185279.V9ISS1P24","url":null,"abstract":"Num ambiente globalizado e competitivo, e de interesse das organizacoes alinharem seus recursos dentro de estrategias definidas objetivando melhores resultados. A Manufatura Enxuta e uma abordagem utilizada para maximizacao de resultados das empresas, sendo considerada por alguns autores como um elemento de apoio para atingir a estrategia competitiva das empresas e por outros como uma estrategia competitiva em si. Esse artigo apresenta um estudo sobre o uso da Manufatura Enxuta como elemento de apoio a definicao de estrategia das empresas. Foram avaliados, por meio de uma pesquisa bibliometrica, artigos de periodicos das bases de dados Scopus e Web of Science entre os anos de 2010 a 2020. Do total de artigos pesquisados foram selecionados 21 artigos para o estudo. O objetivo foi avaliar a percepcao de autores mais recentes sobre o uso da Manufatura Enxuta como uma estrategia de producao e operacao, associando a mesma aos criterios competitivos de custo, qualidade, prazo de entrega e flexibilidade. Os resultados apresentam as particularidades na implementacao do modelo enxuto em empresas de diferentes portes, alem das relacoes entre os criterios competitivos e o conceito de pacotes lean. A pesquisa realizada corrobora para a importância da Manufatura Enxuta para aumentar a competitividade do negocio em ambientes organizacionais. http://dx.doi.org/10.18226/23185279.v9iss1p24","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"61 1","pages":"24-29"},"PeriodicalIF":0.0,"publicationDate":"2021-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76214664","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 : 2021-01-27DOI: 10.18226/23185279.V9ISS1P16
Cleber Heleno da Silva Batista, P. F. Barcellos, I. Cecconello
Com a necessidade constante de que as empresas se tornem mais competitivas, a implementacao da producao enxuta vem sendo cada vez mais necessaria. No entanto, a literatura atual destaca que existem inumeros fatores ligados ao processo de implementacao. Diante disso, o presente estudo busca identificar os principais fatores que merecem a atencao dos lideres para obter sucesso nesse processo. O metodo utilizado recorre a pesquisa bibliografica baseada em: Producao Enxuta, Lideranca Lean e Implementacao Enxuta. Os dados utilizados sao provenientes das bases Emerald, Scopus e Web Science no periodo de 5 anos, de 2014 a 2019. Este estudo concentrou-se em organizacoes de diferentes portes, niveis de maturidade e segmentos, alem do setor automotivo. A analise das variaveis encontradas na literatura tem o intuito de ensejar a formacao de uma estrutura unica de abordagem do processo de implementacao da producao enxuta para diferentes organizacoes. Acredita-se que a estrutura resultante, desenvolvida neste estudo, seja capaz de promover melhor compreensao e aplicacao pratica do processo em geral. Por: (1) oferecer suporte a lideres na implementacao da producao enxuta, (2) contribuir na orientacao em relacao a capacitacao de lideres, e (3) orientar a lideranca em direcao a sensibilizacao das pessoas para o processo de mudanca. Por outro lado, recomenda-se a estudos futuros testar a estrutura desenvolvida em empresas de diferentes culturas, tamanhos, segmentos e niveis de maturidade, bem como alterar o tamanho da amostra e realizar refinamentos na estrutura que possam ser evidenciados. http://dx.doi.org/10.18226/23185279.v9iss1p16
{"title":"Liderança na Implementação da Produção Enxuta (Lean Production)","authors":"Cleber Heleno da Silva Batista, P. F. Barcellos, I. Cecconello","doi":"10.18226/23185279.V9ISS1P16","DOIUrl":"https://doi.org/10.18226/23185279.V9ISS1P16","url":null,"abstract":"Com a necessidade constante de que as empresas se tornem mais competitivas, a implementacao da producao enxuta vem sendo cada vez mais necessaria. No entanto, a literatura atual destaca que existem inumeros fatores ligados ao processo de implementacao. Diante disso, o presente estudo busca identificar os principais fatores que merecem a atencao dos lideres para obter sucesso nesse processo. O metodo utilizado recorre a pesquisa bibliografica baseada em: Producao Enxuta, Lideranca Lean e Implementacao Enxuta. Os dados utilizados sao provenientes das bases Emerald, Scopus e Web Science no periodo de 5 anos, de 2014 a 2019. Este estudo concentrou-se em organizacoes de diferentes portes, niveis de maturidade e segmentos, alem do setor automotivo. A analise das variaveis encontradas na literatura tem o intuito de ensejar a formacao de uma estrutura unica de abordagem do processo de implementacao da producao enxuta para diferentes organizacoes. Acredita-se que a estrutura resultante, desenvolvida neste estudo, seja capaz de promover melhor compreensao e aplicacao pratica do processo em geral. Por: (1) oferecer suporte a lideres na implementacao da producao enxuta, (2) contribuir na orientacao em relacao a capacitacao de lideres, e (3) orientar a lideranca em direcao a sensibilizacao das pessoas para o processo de mudanca. Por outro lado, recomenda-se a estudos futuros testar a estrutura desenvolvida em empresas de diferentes culturas, tamanhos, segmentos e niveis de maturidade, bem como alterar o tamanho da amostra e realizar refinamentos na estrutura que possam ser evidenciados. http://dx.doi.org/10.18226/23185279.v9iss1p16","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77381194","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 : 2021-01-14DOI: 10.18226/23185279.V9ISS1P010
Laura Nunes de Menezes, Marcela Cristine de Alencar Lira, L. S. Neiva
The Industry 4.0 concept incorporates technologies from a wide range of domains and this inevitably requires massive changes in processes of innovation, production, logistics and services. Such innovations and transformations cannot be impelled in practice without the support of a tool known as Internet of Things or simply IoT. The objective of this research is to present an overview on two strong and influential pillars of Industry 4.0, which are the IoT and the knowledge economy. For several authors who have dedicated themselves to the study of the fourth industrial revolution, IoT is considered an indispensable pillar for the implementation of the concepts of the referred industrial revolution. However, it has not been common in the literature to see references correlating the almost inherent relationship that exists between IoT and the knowledge economy. In summary, it is possible to state that the greater the valuation and investments directed towards the knowledge economy, the better the quality of the operation of the emerging technique or mechanism known as IoT. From the perspective of industry 4.0 concepts, both the IoT and the knowledge economy have strong beneficial influences on industrial production organizations. Still according to the information compiled in this research, the knowledge economy can be seen as the great asset in favor of ensuring the employability of qualified professionals for all kinds of organizations of an industrial nature. http://dx.doi.org/10.18226/23185279.v9iss1p010
工业4.0概念融合了来自广泛领域的技术，这不可避免地需要在创新、生产、物流和服务过程中发生巨大变化。如果没有物联网(Internet of Things，简称IoT)工具的支持，这些创新和变革就无法在实践中得到推动。本研究的目的是概述工业4.0的两个强大且有影响力的支柱，即物联网和知识经济。对于几位致力于第四次工业革命研究的作者来说，物联网被认为是实施所指工业革命概念不可或缺的支柱。然而，在文献中，将物联网与知识经济之间存在的几乎固有的关系联系起来的参考文献并不常见。总之，可以这样说，针对知识经济的估值和投资越大，被称为物联网的新兴技术或机制的运行质量就越好。从工业4.0概念的角度来看，物联网和知识经济对工业生产组织都有很强的有益影响。然而，根据本研究汇编的信息，知识经济可以被视为有利于确保各种工业性质组织的合格专业人员的就业能力的巨大资产。http://dx.doi.org/10.18226/23185279.v9iss1p010
{"title":"IoT and knowledge Economy: Two Strong Pillars of Industry 4.0","authors":"Laura Nunes de Menezes, Marcela Cristine de Alencar Lira, L. S. Neiva","doi":"10.18226/23185279.V9ISS1P010","DOIUrl":"https://doi.org/10.18226/23185279.V9ISS1P010","url":null,"abstract":"The Industry 4.0 concept incorporates technologies from a wide range of domains and this inevitably requires massive changes in processes of innovation, production, logistics and services. Such innovations and transformations cannot be impelled in practice without the support of a tool known as Internet of Things or simply IoT. The objective of this research is to present an overview on two strong and influential pillars of Industry 4.0, which are the IoT and the knowledge economy. For several authors who have dedicated themselves to the study of the fourth industrial revolution, IoT is considered an indispensable pillar for the implementation of the concepts of the referred industrial revolution. However, it has not been common in the literature to see references correlating the almost inherent relationship that exists between IoT and the knowledge economy. In summary, it is possible to state that the greater the valuation and investments directed towards the knowledge economy, the better the quality of the operation of the emerging technique or mechanism known as IoT. From the perspective of industry 4.0 concepts, both the IoT and the knowledge economy have strong beneficial influences on industrial production organizations. Still according to the information compiled in this research, the knowledge economy can be seen as the great asset in favor of ensuring the employability of qualified professionals for all kinds of organizations of an industrial nature. http://dx.doi.org/10.18226/23185279.v9iss1p010","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87789910","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 : 2021-01-14DOI: 10.18226/23185279.V9ISS1P01
Julio César Mauri, Carlo Rossano Manica
Cabos eletricos sao necessarios para garantir a transmissao da energia eletrica da fonte ate a carga. A maioria destes cabos exigem certificacoes, devido a aplicacao e seguranca requerida. Um dos entraves na obtencao destas certificacoes, e a rastreabilidade do produto quanto a sua manufatura, onde existem documentos normatizando as etapas do processo, que acabam sendo negligenciadas, por aqueles que tem a responsabilidade de informar o que, quando e como cada etapa foi realizada. Nesse sentido, este estudo tem por objetivo demonstrar a criacao de um processo de rastreabilidade, utilizando sistemas da industria 4.0 para auxilio em tarefas de manufatura de cabos eletricos, exibindo informacoes sobre o produto e a sequencia de passos que deve ser seguida para que rastreabilidade seja obtida de forma assertiva, promovendo assim evidencias para o atendimento do requisito na certificacao do produto e do sistema de gestao da qualidade empregado. Para a coleta de dados e utilizado um sistema informatizado e dispositivos moveis, etiquetas com QR Codes, que juntos compreendem desde a concepcao inicial da manufatura dos cabos eletricos, passando por todas as etapas de fabricacao, com controles da producao (MES), ate os ensaios de liberacao do produto aprovado, quando podemos obter todas informacoes de rastreabilidade. http://dx.doi.org/10.18226/23185279.v9iss1p01
{"title":"Aplicação de tecnologias habilitadoras da Indústria 4.0 para auxiliar a rastreabilidade industrial na Manufatura de Cabos Elétricos","authors":"Julio César Mauri, Carlo Rossano Manica","doi":"10.18226/23185279.V9ISS1P01","DOIUrl":"https://doi.org/10.18226/23185279.V9ISS1P01","url":null,"abstract":"Cabos eletricos sao necessarios para garantir a transmissao da energia eletrica da fonte ate a carga. A maioria destes cabos exigem certificacoes, devido a aplicacao e seguranca requerida. Um dos entraves na obtencao destas certificacoes, e a rastreabilidade do produto quanto a sua manufatura, onde existem documentos normatizando as etapas do processo, que acabam sendo negligenciadas, por aqueles que tem a responsabilidade de informar o que, quando e como cada etapa foi realizada. Nesse sentido, este estudo tem por objetivo demonstrar a criacao de um processo de rastreabilidade, utilizando sistemas da industria 4.0 para auxilio em tarefas de manufatura de cabos eletricos, exibindo informacoes sobre o produto e a sequencia de passos que deve ser seguida para que rastreabilidade seja obtida de forma assertiva, promovendo assim evidencias para o atendimento do requisito na certificacao do produto e do sistema de gestao da qualidade empregado. Para a coleta de dados e utilizado um sistema informatizado e dispositivos moveis, etiquetas com QR Codes, que juntos compreendem desde a concepcao inicial da manufatura dos cabos eletricos, passando por todas as etapas de fabricacao, com controles da producao (MES), ate os ensaios de liberacao do produto aprovado, quando podemos obter todas informacoes de rastreabilidade. http://dx.doi.org/10.18226/23185279.v9iss1p01","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"40 1","pages":"01-09"},"PeriodicalIF":0.0,"publicationDate":"2021-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77716934","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 : 2020-12-15DOI: 10.18226/23185279.v8iss2p206
Otávio Detanico Bonatto, I. Cecconello
{"title":"Towards Smart Working: Integration of Computer Simulation, Robotics and Measurement in Process in the Design of a Manufacturing Cell","authors":"Otávio Detanico Bonatto, I. Cecconello","doi":"10.18226/23185279.v8iss2p206","DOIUrl":"https://doi.org/10.18226/23185279.v8iss2p206","url":null,"abstract":"","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"139 43","pages":"206-217"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91403041","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 : 2020-12-15DOI: 10.18226/23185279.v8iss2p218
Diego Leonardo Simoni, I. Cecconello
The high competitiveness of the industry today makes the search for modernization and improvement in processes become fundamental. The automation of welding processes offers numerous benefits for companies, ranging from higher productivity and welding consistency to lower costs for production, labor and materials, safety and quality. Industry 4.0 proposes to make the industry even more automated, so that machines equipped with sensors will be able to communicate with each other and thus make the process even more efficient and allow for real-time monitoring of what occurs in the welding process, also providing that the machine or robot is the process quality inspector. In view of this, it is noticed that barriers arise so that automated welding projects do not reach the expected result due to internal and external aspects. A maturity model is a way to assess how skillful a company is to manage and implement its projects, this means that it enables the identification of the maturity level and, thus, helps the company to define the best path for full success of the project is achieved. Among all the models that help in the assessment of maturity, CMM can be considered as its firstborn. There are several ways to validate a maturity model, including the one proposed in this article, through the evaluation of specialists in the field of robotic welding and users of the systems. The validation of this model was successful because, as proposed, all the average scores obtained were above 3. As a main result, this work presents a maturity model focused on robotic welding cells, which is a gap in the existing literature.
{"title":"Modelo de maturidade aplicado à células de soldagem robotizada: uma proposta baseada no modelo CMMI","authors":"Diego Leonardo Simoni, I. Cecconello","doi":"10.18226/23185279.v8iss2p218","DOIUrl":"https://doi.org/10.18226/23185279.v8iss2p218","url":null,"abstract":"The high competitiveness of the industry today makes the search for modernization and improvement in processes become fundamental. The automation of welding processes offers numerous benefits for companies, ranging from higher productivity and welding consistency to lower costs for production, labor and materials, safety and quality. Industry 4.0 proposes to make the industry even more automated, so that machines equipped with sensors will be able to communicate with each other and thus make the process even more efficient and allow for real-time monitoring of what occurs in the welding process, also providing that the machine or robot is the process quality inspector. In view of this, it is noticed that barriers arise so that automated welding projects do not reach the expected result due to internal and external aspects. A maturity model is a way to assess how skillful a company is to manage and implement its projects, this means that it enables the identification of the maturity level and, thus, helps the company to define the best path for full success of the project is achieved. Among all the models that help in the assessment of maturity, CMM can be considered as its firstborn. There are several ways to validate a maturity model, including the one proposed in this article, through the evaluation of specialists in the field of robotic welding and users of the systems. The validation of this model was successful because, as proposed, all the average scores obtained were above 3. As a main result, this work presents a maturity model focused on robotic welding cells, which is a gap in the existing literature.","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76256781","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 : 2020-11-19DOI: 10.18226/23185279.v8iss1p46
César Ramos Broliato, C. Altafini, Carlos Alberto Costa
Air conditioning for buses is an important incentive tool for the public transport, since it offers comfort to passengers and stimulates the use of this kind of transport which is fundamental to improve urban mobility. Currently, air conditioning equipment for buses is the mechanical vapor compression (MVC) type. However, this kind of system has two main disadvantages: the high financial cost and power consumption by the vehicle engine. The purpose of this study is to develop an evaporative cooler for buses, which is a simple, environmental friendly, low-cost solution that does not use engine power for its operation. The first step was the design and construction of the prototype. The following step was to evaluate the built prototype through performing experimental tests. The prototype presented a saturation efficiency of approximately 70%, airflow rate of 421.5 m³/h and energy consumption of 98.4 W. After determining the prototype technical characteristics, the evaporative cooling system was developed for an urban bus, seeking to meet the air renewal required by ANSI/ASHRAE standard 62.1 and to promote the passenger’s thermal comfort as specified by ISO 7730 and ANSI/ASHRAE Standard 55. The thermal comfort provided by the new cooling system was evaluated through the PMV-PPD indexes. A value of 0.35 was obtained for the PMV index and the PPD index obtained a value of 7, indicating that approximately 93% of the passengers will be satisfied regarding their thermal comfort for the established environmental conditions. The evaporative cooling system had a total energy consumption of approximately 0.4 kW, which represents only 5% of the energy that would be consumed by a MVC system. Therefore, the evaporative cooling performance depends on the climatic conditions of the environment, especially humidity. However, when applied in favorable conditions (low humidity), the evaporative cooling system proved to be a viable solution to replace the MVC systems in buses air-conditioning application, where its main advantage is its positive cost-benefit and energy savings.
{"title":"Development of an evaporative cooler system applied to the air conditioning of urban buses","authors":"César Ramos Broliato, C. Altafini, Carlos Alberto Costa","doi":"10.18226/23185279.v8iss1p46","DOIUrl":"https://doi.org/10.18226/23185279.v8iss1p46","url":null,"abstract":"Air conditioning for buses is an important incentive tool for the public transport, since it offers comfort to passengers and stimulates the use of this kind of transport which is fundamental to improve urban mobility. Currently, air conditioning equipment for buses is the mechanical vapor compression (MVC) type. However, this kind of system has two main disadvantages: the high financial cost and power consumption by the vehicle engine. The purpose of this study is to develop an evaporative cooler for buses, which is a simple, environmental friendly, low-cost solution that does not use engine power for its operation. The first step was the design and construction of the prototype. The following step was to evaluate the built prototype through performing experimental tests. The prototype presented a saturation efficiency of approximately 70%, airflow rate of 421.5 m³/h and energy consumption of 98.4 W. After determining the prototype technical characteristics, the evaporative cooling system was developed for an urban bus, seeking to meet the air renewal required by ANSI/ASHRAE standard 62.1 and to promote the passenger’s thermal comfort as specified by ISO 7730 and ANSI/ASHRAE Standard 55. The thermal comfort provided by the new cooling system was evaluated through the PMV-PPD indexes. A value of 0.35 was obtained for the PMV index and the PPD index obtained a value of 7, indicating that approximately 93% of the passengers will be satisfied regarding their thermal comfort for the established environmental conditions. The evaporative cooling system had a total energy consumption of approximately 0.4 kW, which represents only 5% of the energy that would be consumed by a MVC system. Therefore, the evaporative cooling performance depends on the climatic conditions of the environment, especially humidity. However, when applied in favorable conditions (low humidity), the evaporative cooling system proved to be a viable solution to replace the MVC systems in buses air-conditioning application, where its main advantage is its positive cost-benefit and energy savings.","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78235818","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 : 2020-11-03DOI: 10.18226/23185279.v8iss2p198
G. F. D. Souza, L. L. Corso
método AHP combinado com a Lógica Fuzzy aplicado à um problema de definição de localidade para instalação industrial. O problema em questão conta com quatro possíveis localidades, e para cada, avalia-se seis diferentes critérios. As ferramentas apresentadas neste artigo demonstram-se eficientes e úteis do ponto de vista metodológico, uma vez que vários trabalhos já comprovaram a sua eficácia. Abstract It is a characteristic of modern industry, the constant search for more productivity, agility, innovation and speed in its processes. And to sum up, the expression Industry 4.0, which includes technologies for automation, data exchange, internet of things, cloud computing and concepts of cyber-physical systems, seeks to facilitate the vision of intelligent factories. However, when there is still no industry installed or when it is desired to expand the facilities, this important decision must be made taking several factors into account. Executives commonly find it difficult to provide technical justifications when they are tasked with defining the location of the industrial facility. This type of decision can be extremely important for the health of the enterprise, and it is essential to have the greatest possible assertiveness in the choice. In order to model the uncertainty of human preference, this article aimed to present the application of the AHP method combined with the Fuzzy Logic applied to a problem of defining a location for an industrial installation. The problem in question has four possible locations, and for each, six different criteria are evaluated. The tools presented in this article prove to be efficient and useful from a methodological point of view, since several works have already proved their effectiveness.
{"title":"Definição de localidade para instalação industrial com o apoio do Fuzzy – Processo Analítico Hierárquico","authors":"G. F. D. Souza, L. L. Corso","doi":"10.18226/23185279.v8iss2p198","DOIUrl":"https://doi.org/10.18226/23185279.v8iss2p198","url":null,"abstract":"método AHP combinado com a Lógica Fuzzy aplicado à um problema de definição de localidade para instalação industrial. O problema em questão conta com quatro possíveis localidades, e para cada, avalia-se seis diferentes critérios. As ferramentas apresentadas neste artigo demonstram-se eficientes e úteis do ponto de vista metodológico, uma vez que vários trabalhos já comprovaram a sua eficácia. Abstract It is a characteristic of modern industry, the constant search for more productivity, agility, innovation and speed in its processes. And to sum up, the expression Industry 4.0, which includes technologies for automation, data exchange, internet of things, cloud computing and concepts of cyber-physical systems, seeks to facilitate the vision of intelligent factories. However, when there is still no industry installed or when it is desired to expand the facilities, this important decision must be made taking several factors into account. Executives commonly find it difficult to provide technical justifications when they are tasked with defining the location of the industrial facility. This type of decision can be extremely important for the health of the enterprise, and it is essential to have the greatest possible assertiveness in the choice. In order to model the uncertainty of human preference, this article aimed to present the application of the AHP method combined with the Fuzzy Logic applied to a problem of defining a location for an industrial installation. The problem in question has four possible locations, and for each, six different criteria are evaluated. The tools presented in this article prove to be efficient and useful from a methodological point of view, since several works have already proved their effectiveness.","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79456625","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 : 2020-10-30DOI: 10.18226/23185279.v8iss2p187
Fransiel Frigotto, L. L. Corso, Tiago Vacaro
A dificuldade encontrada pelas empresas em ajustar seus processos industriais devido a variacao da demanda que o mercado impoe, requer flexibilidade no ajuste de suas linhas produtivas. Esses movimentos nao desejados pelas organizacoes fazem-nas encontrar a melhor configuracao de suas linhas produtivas, dispondo seus postos de trabalho de maneira que sejam equilibrados entre si, gastando o mesmo tempo para desenvolver as atividades definidas para os mesmos. Diante desta perspectiva, o artigo aborda o balanceamento das atividades operacionais em uma industria do ramo metal-mecânico, combinada com a simulacao computacional. O principal intuito do trabalho e obter um modelo capaz de atender a meta de eficiencia da planta fabril. Para isso, sao considerados diferentes tipos de produtos e 26 postos de trabalho. A utilizacao da simulacao computacional permitiu encontrar os pontos em que o fluxo produtivo apresentava restricao ou bloqueava o avanco da linha. Com o termino da simulacao verificou-se tambem, que em determinados postos de trabalho a eficiencia meta estipulada pela organizacao nao era atingida. Outro fator determinante, relacionado a mao de obra chegou-se a conclusao que, no processo geral, o numero de operadores era o suficiente, porem existiam pontos de desequilibrio entre os postos de trabalho, onde, em alguns havia excessos de funcionarios, que, por consequencia, faltava mao de obra em outras estacoes de trabalho. http://dx.doi.org/10.18226/23185279.v8iss2p187
{"title":"Aplicação de simulação computacional para validar o balanceamento de uma linha de produção: estudo de caso em uma empresa do ramo metal-mecânico","authors":"Fransiel Frigotto, L. L. Corso, Tiago Vacaro","doi":"10.18226/23185279.v8iss2p187","DOIUrl":"https://doi.org/10.18226/23185279.v8iss2p187","url":null,"abstract":"A dificuldade encontrada pelas empresas em ajustar seus processos industriais devido a variacao da demanda que o mercado impoe, requer flexibilidade no ajuste de suas linhas produtivas. Esses movimentos nao desejados pelas organizacoes fazem-nas encontrar a melhor configuracao de suas linhas produtivas, dispondo seus postos de trabalho de maneira que sejam equilibrados entre si, gastando o mesmo tempo para desenvolver as atividades definidas para os mesmos. Diante desta perspectiva, o artigo aborda o balanceamento das atividades operacionais em uma industria do ramo metal-mecânico, combinada com a simulacao computacional. O principal intuito do trabalho e obter um modelo capaz de atender a meta de eficiencia da planta fabril. Para isso, sao considerados diferentes tipos de produtos e 26 postos de trabalho. A utilizacao da simulacao computacional permitiu encontrar os pontos em que o fluxo produtivo apresentava restricao ou bloqueava o avanco da linha. Com o termino da simulacao verificou-se tambem, que em determinados postos de trabalho a eficiencia meta estipulada pela organizacao nao era atingida. Outro fator determinante, relacionado a mao de obra chegou-se a conclusao que, no processo geral, o numero de operadores era o suficiente, porem existiam pontos de desequilibrio entre os postos de trabalho, onde, em alguns havia excessos de funcionarios, que, por consequencia, faltava mao de obra em outras estacoes de trabalho. http://dx.doi.org/10.18226/23185279.v8iss2p187","PeriodicalId":21696,"journal":{"name":"Scientia cum Industria","volume":"23 1","pages":"187-197"},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78173648","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}
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