Modeling the exergy behavior of human body

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorMADY, Carlos Eduardo Keutenedjian
dc.contributor.authorFERREIRA, Mauricio Silva
dc.contributor.authorYANAGIHARA, Jurandir Itizo
dc.contributor.authorSALDIVA, Paulo Hilario Nascimento
dc.contributor.authorOLIVEIRA JUNIOR, Silvio de
dc.date.accessioned2013-07-30T15:14:53Z
dc.date.available2013-07-30T15:14:53Z
dc.date.issued2012
dc.description.abstractExergy analysis is applied to assess the energy conversion processes that take place in the human body, aiming at developing indicators of health and performance based on the concepts of exergy destroyed rate and exergy efficiency. The thermal behavior of the human body is simulated by a model composed of 15 cylinders with elliptical cross section representing: head, neck, trunk, arms, forearms, hands, thighs, legs, and feet. For each, a combination of tissues is considered. The energy equation is solved for each cylinder, being possible to obtain transitory response from the body due to a variation in environmental conditions. With this model, it is possible to obtain heat and mass flow rates to the environment due to radiation, convection, evaporation and respiration. The exergy balances provide the exergy variation due to heat and mass exchange over the body, and the exergy variation over time for each compartments tissue and blood, the sum of which leads to the total variation of the body. Results indicate that exergy destroyed and exergy efficiency decrease over lifespan and the human body is more efficient and destroys less exergy in lower relative humidities and higher temperatures.
dc.description.indexWoS
dc.description.sponsorshipFAPESP (the State of Sao Paulo Research Foundation) [09/17578-0]
dc.description.sponsorshipCNPq (National Research Council) [306505/2009-6]
dc.identifier.citationENERGY, v.45, n.1, p.546-553, 2012
dc.identifier.doi10.1016/j.energy.2012.02.064
dc.identifier.issn0360-5442
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/937
dc.language.isoeng
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofEnergy
dc.rightsrestrictedAccess
dc.rights.holderCopyright PERGAMON-ELSEVIER SCIENCE LTD
dc.subjectHuman body behavior
dc.subjectExergy analysis
dc.subjectExergy efficiency
dc.subject.otherentropy generation
dc.subject.otherthermal comfort
dc.subject.othergrowth
dc.subject.wosThermodynamics
dc.subject.wosEnergy & Fuels
dc.titleModeling the exergy behavior of human body
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.author.externalMADY, Carlos Eduardo Keutenedjian:Univ Sao Paulo, Polytech Sch, Dept Mech Engn, BR-05508900 Sao Paulo, Brazil
hcfmusp.author.externalFERREIRA, Mauricio Silva:Univ Sao Paulo, Polytech Sch, Dept Mech Engn, BR-05508900 Sao Paulo, Brazil
hcfmusp.author.externalYANAGIHARA, Jurandir Itizo:Univ Sao Paulo, Polytech Sch, Dept Mech Engn, BR-05508900 Sao Paulo, Brazil
hcfmusp.author.externalOLIVEIRA JUNIOR, Silvio de:Univ Sao Paulo, Polytech Sch, Dept Mech Engn, BR-05508900 Sao Paulo, Brazil
hcfmusp.citation.scopus61
hcfmusp.contributor.author-fmusphcPAULO HILARIO NASCIMENTO SALDIVA
hcfmusp.description.beginpage546
hcfmusp.description.endpage553
hcfmusp.description.issue1
hcfmusp.description.volume45
hcfmusp.origemWOS
hcfmusp.origem.scopus2-s2.0-84865426344
hcfmusp.origem.wosWOS:000309243700062
hcfmusp.publisher.cityOXFORD
hcfmusp.publisher.countryENGLAND
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hcfmusp.remissive.sponsorshipCNPq
hcfmusp.remissive.sponsorshipFAPESP
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