RT Journal Article
T1 Disaggregation process for dynamic multidimensional heat flux in building simulation
A1 Garay, Roberto
A1 Riverola, Alberto
A1 Chemisana, Daniel
A1 Martinez, Roberto Garay
AB Heat transfer across envelopes (façade, roof, glazed areas) represents a big share of the energy flow within the heat balance of buildings. This paper focuses on areas of the envelope where multi-dimensional heat transfer occurs. These areas are commonly defined as thermal bridges, due to a localized reduction of thermal resistance of constructions in these places. This paper reviews common standardized methods to assess heat transfer in buildings, under various modelling assumptions: one-dimensional, multi-dimensional, steady state and dynamic. Within presently developed modelling and assessment methods, a need for improvement has been identified over existing methods for the thermal assessment of multi-dimensional heat transfer under dynamic conditions. A phasorial approach to differential heat transfer in thermal bridges has been developed, which serves as the dynamic extension of steady-state thermal bridge coefficients. This formulation is applied to the junction of a masonry wall with a concrete slab.
SN 1872-6178
YR 2017
FD 2017-08-01
LA eng
NO Garay , R , Riverola , A , Chemisana , D & Martinez , R G 2017 , ' Disaggregation process for dynamic multidimensional heat flux in building simulation ' , Energy and Buildings , vol. 148 , pp. 298-310 . https://doi.org/10.1016/j.enbuild.2017.05.029
NO Publisher Copyright: © 2017 Elsevier B.V.
DS TECNALIA Publications
RD 1 jul 2024