Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ces.2016.01.031 http://hdl.handle.net/11449/168357 |
Resumo: | The main objective of this study was to develop a method that can be used to estimate the lower flammability limits of C-H-O compounds at standard temperature and pressure. In addition, a study was carried out to develop a method that can be used to determine lower flammability limits at different initial temperatures at 1 atm. Several 374 C-H-O compounds were used to develop the method which determines the lower flammability limits at standard temperature and pressure. This group of compounds was divided into two sets, one for correlation and another for prediction. The correlation set was made up of 273 compounds while the prediction set was made up of 101 compounds. The average absolute relative error was 5.53% for the correlation set, while the squared correlation coefficient was 0.9758; the average absolute error was 5.25% and the squared correlation coefficient was 0.9699 for the prediction set; and the average absolute error was 5.43% and the squared correlation coefficient was 0.9752 for the total set. These parameters show that the method is very accurate. The dependence of the lower flammability limit on the initial temperature was studied for a total set of 26 compounds. It was found that the adiabatic flame temperature at the lower flammability limit cannot always be assumed to be constant. A method that can be used to estimate the LFLs at different initial temperatures was developed; this method had an average absolute relative error of 1.85% and a squared correlation coefficient of 0.9987. |
id |
UNSP_4c9366e6e37a12233f2278724ea9318d |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/168357 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependenceC-H-O compoundsEstimationLower flammability limitsTemperature dependenceThe main objective of this study was to develop a method that can be used to estimate the lower flammability limits of C-H-O compounds at standard temperature and pressure. In addition, a study was carried out to develop a method that can be used to determine lower flammability limits at different initial temperatures at 1 atm. Several 374 C-H-O compounds were used to develop the method which determines the lower flammability limits at standard temperature and pressure. This group of compounds was divided into two sets, one for correlation and another for prediction. The correlation set was made up of 273 compounds while the prediction set was made up of 101 compounds. The average absolute relative error was 5.53% for the correlation set, while the squared correlation coefficient was 0.9758; the average absolute error was 5.25% and the squared correlation coefficient was 0.9699 for the prediction set; and the average absolute error was 5.43% and the squared correlation coefficient was 0.9752 for the total set. These parameters show that the method is very accurate. The dependence of the lower flammability limit on the initial temperature was studied for a total set of 26 compounds. It was found that the adiabatic flame temperature at the lower flammability limit cannot always be assumed to be constant. A method that can be used to estimate the LFLs at different initial temperatures was developed; this method had an average absolute relative error of 1.85% and a squared correlation coefficient of 0.9987.São Paulo State University - UNESP Campus of Guaratinguetá - FEG, Av. Ariberto P. da Cunha, 333Federal Univ. of Itajubá - UNIFEI. Mechanical Engineering Inst. - IEM, Av BPS 1303São Paulo State University - UNESP Campus of Guaratinguetá - FEG, Av. Ariberto P. da Cunha, 333Universidade Estadual Paulista (Unesp)Federal Univ. of Itajubá - UNIFEI. Mechanical Engineering Inst. - IEMMendiburu, Andrés Z. [UNESP]de Carvalho, João A. [UNESP]Coronado, Christian R.Chumpitaz, German A.2018-12-11T16:40:56Z2018-12-11T16:40:56Z2016-04-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article188-200application/pdfhttp://dx.doi.org/10.1016/j.ces.2016.01.031Chemical Engineering Science, v. 144, p. 188-200.0009-2509http://hdl.handle.net/11449/16835710.1016/j.ces.2016.01.0312-s2.0-849570797752-s2.0-84957079775.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengChemical Engineering Science1,043info:eu-repo/semantics/openAccess2023-10-11T06:09:44Zoai:repositorio.unesp.br:11449/168357Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:38:26.311020Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
title |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
spellingShingle |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence Mendiburu, Andrés Z. [UNESP] C-H-O compounds Estimation Lower flammability limits Temperature dependence |
title_short |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
title_full |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
title_fullStr |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
title_full_unstemmed |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
title_sort |
Determination of lower flammability limits of C-H-O compounds in air and study of initial temperature dependence |
author |
Mendiburu, Andrés Z. [UNESP] |
author_facet |
Mendiburu, Andrés Z. [UNESP] de Carvalho, João A. [UNESP] Coronado, Christian R. Chumpitaz, German A. |
author_role |
author |
author2 |
de Carvalho, João A. [UNESP] Coronado, Christian R. Chumpitaz, German A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Federal Univ. of Itajubá - UNIFEI. Mechanical Engineering Inst. - IEM |
dc.contributor.author.fl_str_mv |
Mendiburu, Andrés Z. [UNESP] de Carvalho, João A. [UNESP] Coronado, Christian R. Chumpitaz, German A. |
dc.subject.por.fl_str_mv |
C-H-O compounds Estimation Lower flammability limits Temperature dependence |
topic |
C-H-O compounds Estimation Lower flammability limits Temperature dependence |
description |
The main objective of this study was to develop a method that can be used to estimate the lower flammability limits of C-H-O compounds at standard temperature and pressure. In addition, a study was carried out to develop a method that can be used to determine lower flammability limits at different initial temperatures at 1 atm. Several 374 C-H-O compounds were used to develop the method which determines the lower flammability limits at standard temperature and pressure. This group of compounds was divided into two sets, one for correlation and another for prediction. The correlation set was made up of 273 compounds while the prediction set was made up of 101 compounds. The average absolute relative error was 5.53% for the correlation set, while the squared correlation coefficient was 0.9758; the average absolute error was 5.25% and the squared correlation coefficient was 0.9699 for the prediction set; and the average absolute error was 5.43% and the squared correlation coefficient was 0.9752 for the total set. These parameters show that the method is very accurate. The dependence of the lower flammability limit on the initial temperature was studied for a total set of 26 compounds. It was found that the adiabatic flame temperature at the lower flammability limit cannot always be assumed to be constant. A method that can be used to estimate the LFLs at different initial temperatures was developed; this method had an average absolute relative error of 1.85% and a squared correlation coefficient of 0.9987. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-22 2018-12-11T16:40:56Z 2018-12-11T16:40:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ces.2016.01.031 Chemical Engineering Science, v. 144, p. 188-200. 0009-2509 http://hdl.handle.net/11449/168357 10.1016/j.ces.2016.01.031 2-s2.0-84957079775 2-s2.0-84957079775.pdf |
url |
http://dx.doi.org/10.1016/j.ces.2016.01.031 http://hdl.handle.net/11449/168357 |
identifier_str_mv |
Chemical Engineering Science, v. 144, p. 188-200. 0009-2509 10.1016/j.ces.2016.01.031 2-s2.0-84957079775 2-s2.0-84957079775.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Chemical Engineering Science 1,043 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
188-200 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128393473949696 |