"Fast POD method to evaluate infiltration heat recovery in building wal" by Alexandra Tallet, Erwan Liberge et al.

Building Simulation: An International Journal

Article Title

Fast POD method to evaluate infiltration heat recovery in building walls

Authors

Alexandra Tallet, LaSIE UMR CNRS 7356, Université de la Rochelle, Pôle Science et Technologie, Avenue Michel Crépeau, 17042 La Rochelle Cedex 1, France
Erwan Liberge, LaSIE UMR CNRS 7356, Université de la Rochelle, Pôle Science et Technologie, Avenue Michel Crépeau, 17042 La Rochelle Cedex 1, France
Christian Inard, LaSIE UMR CNRS 7356, Université de la Rochelle, Pôle Science et Technologie, Avenue Michel Crépeau, 17042 La Rochelle Cedex 1, France

Keywords

air infiltration, low energy consumption building, CFD, reduced order model, POD, Modelica language

Abstract

Air infiltration of buildings has a considerable impact on the energy performance of buildings. Permeability or airflow leakage can be evaluated by introducing the Infiltration Heat Recovery (IHR) factor in the energy balance equation. Conventionally, this factor is computed using a Computational Fluid Dynamics (CFD) software, that is time consuming and not very useful for a fast evaluation of balance energy of a building. This article proposes a Reduced-Order model (ROM) approach to evaluate the effect of the permeability of the energy balance for a building. The ROM, based on the well-known Proper Orthogonal Decomposition (POD) method, is developed in the Modelica modeling language. It is successfully applied to the case study of the air infiltration in the low energy consumption building.