Share

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

Number: pap. 1120

Author(s) : DAMLE R., LEHMKUHL O., RIGOLA J., et al.

Summary

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.

Available documents

Format PDF

Pages: 10 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Numerical simulation tools for energy efficiency in buildings. HAM transfer in facades coupled with CFD models for air distribution.
  • Record ID : 30010664
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

Links


See other articles from the proceedings (424)
See the conference proceedings

Indexing