Disaggregation process for dynamic multidimensional heat flux in building simulation
Loading...
Identifiers
Publication date
2017-08-01
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Export
Abstract
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.
Description
Publisher Copyright: © 2017 Elsevier B.V.
Keywords
Heat transfer , Multidimensional , Finite Difference , Thermal bridge , Heat bridge , Dynamic , Buildings , Envelopes , Simulation , Numerical calculation , Heat transfer , Multidimensional , Finite Difference , Thermal bridge , Heat bridge , Dynamic , Buildings , Envelopes , Simulation , Numerical calculation , Civil and Structural Engineering , Building and Construction , Mechanical Engineering , Electrical and Electronic Engineering
Type
Citation
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