On the thermal time constant of structural walls

dc.contributor.author	Τσιλιγγίρης, Παναγιώτης Θ.	el
dc.date.accessioned	2015-05-04T10:17:56Z
dc.date.available	2015-05-04T10:17:56Z
dc.date.issued	2015-05-04
dc.identifier.uri	http://hdl.handle.net/11400/9633
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.elsevier.com	en
dc.subject	Transient wall thermal behaviour
dc.subject	Wall heat conduction
dc.subject	Wall transient response
dc.subject	Wall thermal time constant
dc.subject	Θερμική αγωγιμότητα τοίχου
dc.subject	Μεταβατική θερμική συμπεριφορά τοίχου
dc.subject	Μεταβατική αντίδραση τοίχου
dc.subject	Θερμική σταθερά χρόνου του τοίχου
dc.title	On the thermal time constant of structural walls	en
heal.type	journalArticle
heal.classification	Technology
heal.classification	Engineering
heal.classification	Τεχνολογία
heal.classification	Μηχανική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/19795-3
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Μηχανική
heal.identifier.secondary	doi:10.1016/j.applthermaleng.2003.10.015
heal.language	en
heal.access	free
heal.publicationDate	2004-04
heal.bibliographicCitation	TSILINGIRIS, P.T. (2004). On the thermal time constant of structural walls. Applied Thermal Engineering. [Online] 24 (5-6). p.743–757. Available from: http://www.sciencedirect.com/[Accessed 15/12/2003]	en
heal.abstract	In the present investigation a numerical model is employed for the calculation of the transient wall heat flux, under the effect of a step temperature change at a particular wall side, for given initial and boundary conditions. The results were employed for the evaluation of the wall thermal time constant, which is widely employed quantity in Physics and technology to describe the transient output response characteristics of a system under the influence of a step change of a particular input variable parameter. According to the derived results, it was found that the wall thermal time constant is a wall side specific quantity, something which leads to the definition of two time constants, the forward and reverse, which conventionally correspond to the room and ambient wall sides respectively. Furthermore, their ratio appears also to be a very interesting quantity, which represents the measure of the uneven distribution of heat capacity in respect of the wall plane of symmetry and becomes unity for symmetrical walls. Both thermal time constants were evaluated for a number of typical walls, broadly employed in construction practice, and the results were comparably presented and discussed in respect to their fundamental significance on the load characteristics and energy demand of buildings.	en
heal.publisher	Elsevier	en
heal.journalName	Applied Thermal Engineering	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true