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Effects of coupled heat and moisture transfers through walls upon indoor environment predictions

Mora, M., Wurtz, E., Mendon?a, K. C. and Inard, C.
2004
International Journal of Ventilation, 3(3): 227-234
zonal models, energy, heat and moisture transfer, sorption, thermal comfort,

Mora, M., Wurtz, E., Mendon?a, K. C. and Inard, C., (2004), "Effects of coupled heat and moisture transfers through walls upon indoor environment predictions", International Journal of Ventilation, 3(3): 227-234.
Abstract:
The non-uniform behaviour of the air inside a room, which is important in comfort analysis, can be evaluated by zonal models. While not as fine-grained as CFD simulation, they do give useful information about temperature and moisture distributions that is not available from lumped-parameter models. Therefore, we have developed a tool, called SimSPARK, to automatically build dynamic zonal simulations of a building zone. Its model library includes different models to describe heat and moisture transfers across the building zone envelope, with two of them taking into account moisture adsorption/desorption by building materials. To illustrate the applicability of this tool, we compare two zonal models including adsorption and desorption processes with one that ignores these phenomena, in a ventilated room modelled using 27 cells. The results indicate that adsorption/desorption by building materials does affect indoor air behaviour in a hot and humid climate.

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Related Concepts

Author Information and Other Publications Notes
Mora, M.
     
Wurtz, E.
  1. An integrated zonal model for predicting transient VOC distribution in a ventilated room
  2. An integrated zonal model to predict transient indoor humidity distribution
  3. Comparing zonal and CFD model predictions of indoor airflows under mixed convection conditions to experimental data
  4. Comparing zonal and CFD model predictions of isothermal indoor airflows to experimental data  
Mendon?a, K. C.
  1. Moisture performance of building materials: From material characterization to building simulation using the Moisture Buffer Value  
Inard, C.
  1. Comparing zonal and CFD model predictions of indoor airflows under mixed convection conditions to experimental data  


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