Forced convection and the coffee cup

Bibliographic Details
Main Author: Ferreira, João Paulo M.
Publication Date: 2025
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.14/52845
Summary: Different heat transfer mechanisms are often presented to students only in an expositive way, lacking experimental demonstrations. Using the common situation of the cooling of a coffee cup, a series of practical activities are here proposed that require simple, accessible, and inexpensive equipment. Emphasis is placed on the effect of forced convection, vs free convection. The implications of these in relation to other heat transfer mechanisms, specifically radiation and evaporation, are studied. Quantitative analyses are possible, enabling to estimate values of heat transfer coefficients. These are compared with predictive correlations of dimensionless numbers, arriving at very good agreements.
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spelling Forced convection and the coffee cupHeat transfer mechanismsNatural convectionForced convectionNewton's law of coolingHeat transfer coefficientDifferent heat transfer mechanisms are often presented to students only in an expositive way, lacking experimental demonstrations. Using the common situation of the cooling of a coffee cup, a series of practical activities are here proposed that require simple, accessible, and inexpensive equipment. Emphasis is placed on the effect of forced convection, vs free convection. The implications of these in relation to other heat transfer mechanisms, specifically radiation and evaporation, are studied. Quantitative analyses are possible, enabling to estimate values of heat transfer coefficients. These are compared with predictive correlations of dimensionless numbers, arriving at very good agreements.VeritatiFerreira, João Paulo M.2025-03-28T12:07:39Z2025-03-052025-03-05T00:00:00Zresearch articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.14/52845eng0031-912010.1088/1361-6552/adb6eainfo:eu-repo/semantics/embargoedAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-04-01T01:32:48Zoai:repositorio.ucp.pt:10400.14/52845Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T04:43:11.802404Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Forced convection and the coffee cup
title Forced convection and the coffee cup
spellingShingle Forced convection and the coffee cup
Ferreira, João Paulo M.
Heat transfer mechanisms
Natural convection
Forced convection
Newton's law of cooling
Heat transfer coefficient
title_short Forced convection and the coffee cup
title_full Forced convection and the coffee cup
title_fullStr Forced convection and the coffee cup
title_full_unstemmed Forced convection and the coffee cup
title_sort Forced convection and the coffee cup
author Ferreira, João Paulo M.
author_facet Ferreira, João Paulo M.
author_role author
dc.contributor.none.fl_str_mv Veritati
dc.contributor.author.fl_str_mv Ferreira, João Paulo M.
dc.subject.por.fl_str_mv Heat transfer mechanisms
Natural convection
Forced convection
Newton's law of cooling
Heat transfer coefficient
topic Heat transfer mechanisms
Natural convection
Forced convection
Newton's law of cooling
Heat transfer coefficient
description Different heat transfer mechanisms are often presented to students only in an expositive way, lacking experimental demonstrations. Using the common situation of the cooling of a coffee cup, a series of practical activities are here proposed that require simple, accessible, and inexpensive equipment. Emphasis is placed on the effect of forced convection, vs free convection. The implications of these in relation to other heat transfer mechanisms, specifically radiation and evaporation, are studied. Quantitative analyses are possible, enabling to estimate values of heat transfer coefficients. These are compared with predictive correlations of dimensionless numbers, arriving at very good agreements.
publishDate 2025
dc.date.none.fl_str_mv 2025-03-28T12:07:39Z
2025-03-05
2025-03-05T00:00:00Z
dc.type.driver.fl_str_mv research article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.14/52845
url http://hdl.handle.net/10400.14/52845
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0031-9120
10.1088/1361-6552/adb6ea
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
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reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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