Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782006000300001 |
Resumo: | This work shows the experimental study of a continuous gas-solid fluidized bed with an immersed tube where cold water is heated by fluidized solid particles presenting inlet temperature from 450 to 700°C. Experiments were carried out in order to verify the influence of solid particle flow rate and distance between baffles immersed in a shallow fluidized bed. The solid material was 254µm diameter silica sand particles, fluidized by air in a 0.90m long and 0.15m wide heat exchanger. The measurements were taken at steady state conditions for solid mass flow rate from 10 to 100 kg/h, in a heat exchanger with the presence of 5 or 8 baffles. Bed temperature measurements along the length of the heat exchanger were experimentally obtained and heat balances for differential control volumes of the heat exchanger were made in order to obtain the axial profile of the bed-to-tube heat transfer coefficient. The results showed that heat transfer coefficient increases with the solid particle mass flow rate and with the presence of baffles, suggesting that these are important factors to be considered in the design of such heat exchanger. |
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Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
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Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particlesShallow fluidized bedexperimental workheat exchangerbed-to-tube heat transfer coefficientheat recoveryThis work shows the experimental study of a continuous gas-solid fluidized bed with an immersed tube where cold water is heated by fluidized solid particles presenting inlet temperature from 450 to 700°C. Experiments were carried out in order to verify the influence of solid particle flow rate and distance between baffles immersed in a shallow fluidized bed. The solid material was 254µm diameter silica sand particles, fluidized by air in a 0.90m long and 0.15m wide heat exchanger. The measurements were taken at steady state conditions for solid mass flow rate from 10 to 100 kg/h, in a heat exchanger with the presence of 5 or 8 baffles. Bed temperature measurements along the length of the heat exchanger were experimentally obtained and heat balances for differential control volumes of the heat exchanger were made in order to obtain the axial profile of the bed-to-tube heat transfer coefficient. The results showed that heat transfer coefficient increases with the solid particle mass flow rate and with the presence of baffles, suggesting that these are important factors to be considered in the design of such heat exchanger.Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782006000300001Journal of the Brazilian Society of Mechanical Sciences and Engineering v.28 n.3 2006reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/S1678-58782006000300001info:eu-repo/semantics/openAccessPécora,Araí A. BernárdezParise,Maria Reginaeng2006-08-18T00:00:00Zoai:scielo:S1678-58782006000300001Revistahttps://www.scielo.br/j/jbsmse/https://old.scielo.br/oai/scielo-oai.php||abcm@abcm.org.br1806-36911678-5878opendoar:2006-08-18T00:00Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
title |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
spellingShingle |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles Pécora,Araí A. Bernárdez Shallow fluidized bed experimental work heat exchanger bed-to-tube heat transfer coefficient heat recovery |
title_short |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
title_full |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
title_fullStr |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
title_full_unstemmed |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
title_sort |
Heat transfer coefficient in a shallow fluidized bed heat exchanger with a continuous flow of solid particles |
author |
Pécora,Araí A. Bernárdez |
author_facet |
Pécora,Araí A. Bernárdez Parise,Maria Regina |
author_role |
author |
author2 |
Parise,Maria Regina |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Pécora,Araí A. Bernárdez Parise,Maria Regina |
dc.subject.por.fl_str_mv |
Shallow fluidized bed experimental work heat exchanger bed-to-tube heat transfer coefficient heat recovery |
topic |
Shallow fluidized bed experimental work heat exchanger bed-to-tube heat transfer coefficient heat recovery |
description |
This work shows the experimental study of a continuous gas-solid fluidized bed with an immersed tube where cold water is heated by fluidized solid particles presenting inlet temperature from 450 to 700°C. Experiments were carried out in order to verify the influence of solid particle flow rate and distance between baffles immersed in a shallow fluidized bed. The solid material was 254µm diameter silica sand particles, fluidized by air in a 0.90m long and 0.15m wide heat exchanger. The measurements were taken at steady state conditions for solid mass flow rate from 10 to 100 kg/h, in a heat exchanger with the presence of 5 or 8 baffles. Bed temperature measurements along the length of the heat exchanger were experimentally obtained and heat balances for differential control volumes of the heat exchanger were made in order to obtain the axial profile of the bed-to-tube heat transfer coefficient. The results showed that heat transfer coefficient increases with the solid particle mass flow rate and with the presence of baffles, suggesting that these are important factors to be considered in the design of such heat exchanger. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-09-01 |
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=S1678-58782006000300001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782006000300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-58782006000300001 |
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 e Ciências Mecânicas - ABCM |
publisher.none.fl_str_mv |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
dc.source.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering v.28 n.3 2006 reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
collection |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
||abcm@abcm.org.br |
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1754734680557486080 |