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Title: Thermal delay provided by floors containing layers that incorporate expanded cork granule waste
Authors: Tadeu, A. 
Moreira, A. 
António, J. 
Simões, N. 
Simões, I. 
Keywords: Transient heat conduction; Thermal delay; Analytical solutions; Frequency domain; Building multilayer floors; Expanded cork
Issue Date: Jan-2014
Publisher: Elsevier
Citation: TADEU, A. [et. al] - Thermal delay provided by floors containing layers that incorporate expanded cork granule waste. "Energy and Buildings". ISSN 0378-7788. Vol. 68 (2014) p. 611-619
Serial title, monograph or event: Energy and Buildings
Volume: 68
Abstract: This paper reports the computation of the thermal delay provided by concrete floors built with layers of cork and lightweight screed that incorporate expanded cork granule waste. The heat transfer by conduction across these multilayer systems is simulated analytically under unsteady boundary conditions. The thermal delay is computed for multilayer concrete floors with varying numbers of layers and layer thicknesses. The mass density and thermal conductivity of the various materials were determined experimentally. Given its heterogeneity, the specific heat of the lightweight screed was obtained indirectly using both the experimental results and the analytical model. The results obtained show the potential of these composites in applications for increasing the thermal performance of concrete floors, in particular the thermal delay and thermal resistance. The results show that the contribution of the insulating lightweight screed material's properties to thermal delay is more relevant in systems composed of few layers. The constructive solutions composed of a greater number of layers present higher thermal delay value.
ISSN: 0378-7788
DOI: 10.1016/j.enbuild.2013.10.007
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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