Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2225 |
Resumo: | A theoretical and experimental methodology was developed and made possible to evaluate and analyse the time constants of five thermocouples of a ring-shaped sensor installed in a fixed bed. In this sense, step disturbances were applied to the temperature of the air that flows across the sensor and the step responses were registered by periodic measures of temperature until the sensor reached steadystate. The time constants were evaluated by linear regressions of the sensor mathematical model. Both the mathematical model and the technique used for the adjustment of the time constants were satisfactory. Each thermocouple from the ring-shaped sensor has presented distinct time constants. The external ring-shaped thermocouple, r = 0,027m, and the central thermocouple, r = 0m, has presented the higher and the lower value of time constant, respectively, independent of the volumetric gas flow. |
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Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225Determinação e análise das constantes de tempo de um sensor anelar de temperatura em leito fixo - DOI: 10.4025/actascitechnol.v25i1.22253.00.00.00-9 Engenharias3.00.00.00-9 EngenhariasA theoretical and experimental methodology was developed and made possible to evaluate and analyse the time constants of five thermocouples of a ring-shaped sensor installed in a fixed bed. In this sense, step disturbances were applied to the temperature of the air that flows across the sensor and the step responses were registered by periodic measures of temperature until the sensor reached steadystate. The time constants were evaluated by linear regressions of the sensor mathematical model. Both the mathematical model and the technique used for the adjustment of the time constants were satisfactory. Each thermocouple from the ring-shaped sensor has presented distinct time constants. The external ring-shaped thermocouple, r = 0,027m, and the central thermocouple, r = 0m, has presented the higher and the lower value of time constant, respectively, independent of the volumetric gas flow.Neste trabalho foi desenvolvida uma metodologia teórico-experimental que possibilitou a determinação e a análise das constantes de tempo dos cinco termopares que compõem um sensor anelar de temperatura instalado em leito fixo. Para tal, foram efetuadas perturbações tipo degrau na temperatura do ar que passa pelo sensor, sendo as respostas térmicas registradas mediante medidas periódicas de temperatura até que o sensor alcançasse a condição de regime permanente. Posteriormente, as constantes de tempo foram estimadas a partir do ajuste de um modelo matemático do sensor por regressões lineares. Tanto o modelo matemático como a técnica utilizada para o ajuste das constantes de tempo foram adequados. Cada um dos termopares que compõem o sensor anelar apresentou constantes de tempo distintas. O termopar anelar externo, r = 0,027m, e o termopar central, r = 0m, apresentam o maior e o menor valor de constante de tempo, respectivamente, independentemente da vazão utilizada.Universidade Estadual De Maringá2008-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionsensor anelar de temperatura; constantes de tempo; termopares; leito fixoapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/222510.4025/actascitechnol.v25i1.2225Acta Scientiarum. Technology; Vol 25 No 1 (2003); 9-15Acta Scientiarum. Technology; v. 25 n. 1 (2003); 9-151806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2225/1337Jorge, Luiz Mario de MatosOliveira, Gustavo Piras deJorge, Regina Maria MatosGiudici, Reinaldoinfo:eu-repo/semantics/openAccess2024-05-17T13:02:42Zoai:periodicos.uem.br/ojs:article/2225Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:42Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 Determinação e análise das constantes de tempo de um sensor anelar de temperatura em leito fixo - DOI: 10.4025/actascitechnol.v25i1.2225 |
title |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
spellingShingle |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 Jorge, Luiz Mario de Matos 3.00.00.00-9 Engenharias 3.00.00.00-9 Engenharias |
title_short |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
title_full |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
title_fullStr |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
title_full_unstemmed |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
title_sort |
Time constants determination and analysis for a ring-shaped temperature sensor in fixed bed - DOI: 10.4025/actascitechnol.v25i1.2225 |
author |
Jorge, Luiz Mario de Matos |
author_facet |
Jorge, Luiz Mario de Matos Oliveira, Gustavo Piras de Jorge, Regina Maria Matos Giudici, Reinaldo |
author_role |
author |
author2 |
Oliveira, Gustavo Piras de Jorge, Regina Maria Matos Giudici, Reinaldo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Jorge, Luiz Mario de Matos Oliveira, Gustavo Piras de Jorge, Regina Maria Matos Giudici, Reinaldo |
dc.subject.por.fl_str_mv |
3.00.00.00-9 Engenharias 3.00.00.00-9 Engenharias |
topic |
3.00.00.00-9 Engenharias 3.00.00.00-9 Engenharias |
description |
A theoretical and experimental methodology was developed and made possible to evaluate and analyse the time constants of five thermocouples of a ring-shaped sensor installed in a fixed bed. In this sense, step disturbances were applied to the temperature of the air that flows across the sensor and the step responses were registered by periodic measures of temperature until the sensor reached steadystate. The time constants were evaluated by linear regressions of the sensor mathematical model. Both the mathematical model and the technique used for the adjustment of the time constants were satisfactory. Each thermocouple from the ring-shaped sensor has presented distinct time constants. The external ring-shaped thermocouple, r = 0,027m, and the central thermocouple, r = 0m, has presented the higher and the lower value of time constant, respectively, independent of the volumetric gas flow. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-04-15 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion sensor anelar de temperatura; constantes de tempo; termopares; leito fixo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2225 10.4025/actascitechnol.v25i1.2225 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2225 |
identifier_str_mv |
10.4025/actascitechnol.v25i1.2225 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2225/1337 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 25 No 1 (2003); 9-15 Acta Scientiarum. Technology; v. 25 n. 1 (2003); 9-15 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315332066705408 |