Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/9631
Title: The influence of heat capacity and its spatial distribution on the transient wall thermal behavior under the effect of harmonically time-varying driving forces
Authors: Τσιλιγγίρης, Παναγιώτης Θ.
Item type: Journal article
Keywords: Wall heat capacity;Heat capacity distribution;Thermal time constant;Wall heat transfer;Θερμική ικανότητα τοίχου;Κατανομή θερμικής ικανότητας;Θερμική σταθερά χρόνου;Τοίχος μετάδοσης θερμότητας
Subjects: Technology
Engineering
Τεχνολογία
Μηχανική
Issue Date: 4-May-2015
May-2006
Date of availability: 4-May-2015
Publisher: Elsevier
Abstract: An analysis was developed for the theoretical investigation of heat capacity and of the effects of its spatial distribution on the thermal behavior of structural walls of uniform thermal resistance. The numerical solution of the governing differential equations under the appropriate initial and boundary conditions, allows the prediction of the time-varying heat flux during the transient heating of walls until quasi steady-state conditions are developed asymptotically. It is derived that as far as the fundamental physical behavior of a clear wall section is concerned, although the time depended heat flux is effectively damped and phased out as the wall heat capacity increases, the average quasi steady-state heat flux is constant, irrespectively of wall heat capacity, incident solar radiation intensity, radiation absorption at the exterior wall surface and particular weather conditions defining wall heat loss or gain. However, even though the average quasi steady-state heat flux is constant irrespectively of the wall heat capacity, its time depended value during the development of transient is strongly influenced by the spatial distribution of heat capacity at a direction perpendicular to the wall plane, something which is determined by the wall time constant.
Language: English
Citation: TSILINGIRIS, P.T. (2006). The influence of heat capacity and its spatial distribution on the transient wall thermal behavior under the effect of harmonically time-varying driving forces. Building and Environment. [Online] 41 (5). p.590–601. Available from: http://www.sciencedirect.com/[Accessed 14/07/2005]
Journal: Building and Environment
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/9631
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