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Article: Nonlinear coupling between thermal mass and natural ventilation in buildings

TitleNonlinear coupling between thermal mass and natural ventilation in buildings
Authors
KeywordsBuildings
Natural ventilation
Night ventilation
Passive design
Periodic heat flow
Thermal coupling
Thermal mass
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmt
Citation
International Journal Of Heat And Mass Transfer, 2003, v. 46 n. 7, p. 1251-1264 How to Cite?
AbstractAn ideal naturally ventilated building model that allows a theoretical study of the effect of thermal mass associating with the non-linear coupling between the airflow rate and the indoor air temperature is proposed. When the ventilation rate is constant, both the phase shift and fluctuation of the indoor temperature are determined by the time constant of the system and the dimensionless convective heat transfer number. When the ventilation rate is a function of indoor and outdoor air temperature difference, the thermal mass number and the convective heat transfer air change parameter are suggested. The new thermal mass number measures the capacity ofheat storage, rather than the amount of thermal mass. The analyses and numerical results show that the non-linearity ofthe system does neither change the periodic behaviour of the system, nor the behaviour ofphase shift ofthe indoor air temperature when a periodic outdoor air temperature profile is considered. The maximum indoor air temperature phase shift induced by the direct outdoor air supply without control is 6 h. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/76033
ISSN
2015 Impact Factor: 2.857
2015 SCImago Journal Rankings: 1.749
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYam, Jen_HK
dc.contributor.authorLi, Yen_HK
dc.contributor.authorZheng, Zen_HK
dc.date.accessioned2010-09-06T07:16:58Z-
dc.date.available2010-09-06T07:16:58Z-
dc.date.issued2003en_HK
dc.identifier.citationInternational Journal Of Heat And Mass Transfer, 2003, v. 46 n. 7, p. 1251-1264en_HK
dc.identifier.issn0017-9310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76033-
dc.description.abstractAn ideal naturally ventilated building model that allows a theoretical study of the effect of thermal mass associating with the non-linear coupling between the airflow rate and the indoor air temperature is proposed. When the ventilation rate is constant, both the phase shift and fluctuation of the indoor temperature are determined by the time constant of the system and the dimensionless convective heat transfer number. When the ventilation rate is a function of indoor and outdoor air temperature difference, the thermal mass number and the convective heat transfer air change parameter are suggested. The new thermal mass number measures the capacity ofheat storage, rather than the amount of thermal mass. The analyses and numerical results show that the non-linearity ofthe system does neither change the periodic behaviour of the system, nor the behaviour ofphase shift ofthe indoor air temperature when a periodic outdoor air temperature profile is considered. The maximum indoor air temperature phase shift induced by the direct outdoor air supply without control is 6 h. © 2002 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmten_HK
dc.relation.ispartofInternational Journal of Heat and Mass Transferen_HK
dc.subjectBuildingsen_HK
dc.subjectNatural ventilationen_HK
dc.subjectNight ventilationen_HK
dc.subjectPassive designen_HK
dc.subjectPeriodic heat flowen_HK
dc.subjectThermal couplingen_HK
dc.subjectThermal massen_HK
dc.titleNonlinear coupling between thermal mass and natural ventilation in buildingsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0017-9310&volume=46&issue=7&spage=1251&epage=1264&date=2003&atitle=Nonlinear+coupling+between+thermal+mass+and+natural+ventilation+in+buildingsen_HK
dc.identifier.emailLi, Y:liyg@hkucc.hku.hken_HK
dc.identifier.authorityLi, Y=rp00151en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0017-9310(02)00379-4en_HK
dc.identifier.scopuseid_2-s2.0-0037365219en_HK
dc.identifier.hkuros79220en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037365219&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1251en_HK
dc.identifier.epage1264en_HK
dc.identifier.isiWOS:000181301700010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYam, J=36985764500en_HK
dc.identifier.scopusauthoridLi, Y=7502094052en_HK
dc.identifier.scopusauthoridZheng, Z=7403007642en_HK

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