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Outils de simulation numérique pour l'efficacité énergétique d'immeubles. Transferts de chaleur, d'air et d'humidité (HAM) dans des façades, couplés à des modèles par mécanique des fluides numériques pour la distribution d'air.

Numerical simulation tools for energy efficiency in buildings. HAM transfer in facades coupled with CFD models for air distribution.

Numéro : pap. 1120

Auteurs : DAMLE R., LEHMKUHL O., RIGOLA J., et al.

Résumé

Buildings represent a major part of the world energy requirement. The simulation of combined heat, air and moisture (HAM) and pollutant transfer in this context is important to predict the indoor air quality, along with the thermal comfort. Moreover, it is important to have appropriate levels of indoor humidity along with the room temperature as movement of water vapor through the building envelope causes a lot of harm to the building structure and reduces the quality of its thermal insulation leading to higher energy demand. The knowledge of the peak loads, temperatures, humidity levels can help to optimize the building design and therefore results in energy efficient buildings. In this work a modular object-oriented building simulation tool (NEST), capable of coupling different levels of simulation models, allowing the simulation of heat, air, moisture distribution (multizone model, envelope model, room analysis and HVAC system) is presented. The modular approach gives flexibility of choosing a model for each element and to have different levels of modeling for different elements in the system. Special attention has been focused on: the large eddy simulation turbulence models used for the room air dynamics and pollutants distribution transport and high performance parallel software. Parallelization of the building simulation is necessary if some critical processes/zones need to be modeled with more detail for reducing computational time. The main focus of this article is to couple the HAM models for the building envelope with CFD HT models with heat, moisture and pollutant transfer models for room airflow.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Numerical simulation tools for energy efficiency in buildings. HAM transfer in facades coupled with CFD models for air distribution.
  • Identifiant de la fiche : 30010664
  • Langues : Anglais
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

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