STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS

Detalhes bibliográficos
Autor(a) principal: Goneli,André L. D.
Data de Publicação: 2020
Outros Autores: Corrêa,Paulo C., Figueiredo Neto,Acácio, Kirsch,Michele R. H., Botelho,Fernando M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Engenharia Agrícola
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200184
Resumo: ABSTRACT Knowledge regarding the static pressure drop in granular layers is of fundamental importance in the development of efficient drying and aeration projects of agricultural products. Thus, the objective of this study was to evaluate the effects of impurity contents on the static pressure drop in different bed depth of castor bean grains, as well as modify the mathematical models per the obtained experimental data and select the model that best represents this phenomenon. First, impurities in castor bean grains of the Guarani variety were eliminated and 6% of the moisture content (dry basis) was retained. The coarse impurity contents were obtained with 2%, 4%, and 6% of mass addition. The pressure drop in different bed depth of clean and impure castor bean grains were determined using an experimental determination equipment of pressure drop in bed depth with an airflow rate ranging 0.2 - 1.0 m3 s−1 m−2. The pressure drop linearly increases with an increase in the depth of the grain layer, and the increase in the airflow rate leads to an increased pressure drop in the castor bean grains layer. The impurity contents increase causes a reduction in pressure drop. The models that best represent castor beans grains pressure drop experimental data, without and with impurities, are Hukill & Ives (1955) and Nimkar & Chattopadhyay (2002), respectively.
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spelling STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINSbulk densityload lossporosityRicinus communis L.moisture contentABSTRACT Knowledge regarding the static pressure drop in granular layers is of fundamental importance in the development of efficient drying and aeration projects of agricultural products. Thus, the objective of this study was to evaluate the effects of impurity contents on the static pressure drop in different bed depth of castor bean grains, as well as modify the mathematical models per the obtained experimental data and select the model that best represents this phenomenon. First, impurities in castor bean grains of the Guarani variety were eliminated and 6% of the moisture content (dry basis) was retained. The coarse impurity contents were obtained with 2%, 4%, and 6% of mass addition. The pressure drop in different bed depth of clean and impure castor bean grains were determined using an experimental determination equipment of pressure drop in bed depth with an airflow rate ranging 0.2 - 1.0 m3 s−1 m−2. The pressure drop linearly increases with an increase in the depth of the grain layer, and the increase in the airflow rate leads to an increased pressure drop in the castor bean grains layer. The impurity contents increase causes a reduction in pressure drop. The models that best represent castor beans grains pressure drop experimental data, without and with impurities, are Hukill & Ives (1955) and Nimkar & Chattopadhyay (2002), respectively.Associação Brasileira de Engenharia Agrícola2020-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200184Engenharia Agrícola v.40 n.2 2020reponame:Engenharia Agrícolainstname:Associação Brasileira de Engenharia Agrícola (SBEA)instacron:SBEA10.1590/1809-4430-eng.agric.v40n2p184-191/2020info:eu-repo/semantics/openAccessGoneli,André L. D.Corrêa,Paulo C.Figueiredo Neto,AcácioKirsch,Michele R. H.Botelho,Fernando M.eng2020-04-15T00:00:00Zoai:scielo:S0100-69162020000200184Revistahttp://www.engenhariaagricola.org.br/ORGhttps://old.scielo.br/oai/scielo-oai.phprevistasbea@sbea.org.br||sbea@sbea.org.br1809-44300100-6916opendoar:2020-04-15T00:00Engenharia Agrícola - Associação Brasileira de Engenharia Agrícola (SBEA)false
dc.title.none.fl_str_mv STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
title STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
spellingShingle STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
Goneli,André L. D.
bulk density
load loss
porosity
Ricinus communis L.
moisture content
title_short STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
title_full STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
title_fullStr STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
title_full_unstemmed STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
title_sort STATIC PRESSURE DROP IN LAYERS OF CASTOR BEAN GRAINS
author Goneli,André L. D.
author_facet Goneli,André L. D.
Corrêa,Paulo C.
Figueiredo Neto,Acácio
Kirsch,Michele R. H.
Botelho,Fernando M.
author_role author
author2 Corrêa,Paulo C.
Figueiredo Neto,Acácio
Kirsch,Michele R. H.
Botelho,Fernando M.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Goneli,André L. D.
Corrêa,Paulo C.
Figueiredo Neto,Acácio
Kirsch,Michele R. H.
Botelho,Fernando M.
dc.subject.por.fl_str_mv bulk density
load loss
porosity
Ricinus communis L.
moisture content
topic bulk density
load loss
porosity
Ricinus communis L.
moisture content
description ABSTRACT Knowledge regarding the static pressure drop in granular layers is of fundamental importance in the development of efficient drying and aeration projects of agricultural products. Thus, the objective of this study was to evaluate the effects of impurity contents on the static pressure drop in different bed depth of castor bean grains, as well as modify the mathematical models per the obtained experimental data and select the model that best represents this phenomenon. First, impurities in castor bean grains of the Guarani variety were eliminated and 6% of the moisture content (dry basis) was retained. The coarse impurity contents were obtained with 2%, 4%, and 6% of mass addition. The pressure drop in different bed depth of clean and impure castor bean grains were determined using an experimental determination equipment of pressure drop in bed depth with an airflow rate ranging 0.2 - 1.0 m3 s−1 m−2. The pressure drop linearly increases with an increase in the depth of the grain layer, and the increase in the airflow rate leads to an increased pressure drop in the castor bean grains layer. The impurity contents increase causes a reduction in pressure drop. The models that best represent castor beans grains pressure drop experimental data, without and with impurities, are Hukill & Ives (1955) and Nimkar & Chattopadhyay (2002), respectively.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200184
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200184
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1809-4430-eng.agric.v40n2p184-191/2020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola
publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola
dc.source.none.fl_str_mv Engenharia Agrícola v.40 n.2 2020
reponame:Engenharia Agrícola
instname:Associação Brasileira de Engenharia Agrícola (SBEA)
instacron:SBEA
instname_str Associação Brasileira de Engenharia Agrícola (SBEA)
instacron_str SBEA
institution SBEA
reponame_str Engenharia Agrícola
collection Engenharia Agrícola
repository.name.fl_str_mv Engenharia Agrícola - Associação Brasileira de Engenharia Agrícola (SBEA)
repository.mail.fl_str_mv revistasbea@sbea.org.br||sbea@sbea.org.br
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