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On the coupling of a zonal model with a multizone building energy simulation model

Lien De Backer (UGent) , Jelle Laverge (UGent) , Arnold Janssens (UGent) and Michel De Paepe (UGent)
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Abstract
The conditions in one zone is often treated as ‘fully mixed’ in Building Energy Simulation programs (BES) e.g. TRNSYS. By contrast, Computational Fluid Dynamics (CFD) are too complex and time-consuming to predict temperature and relative humidity in a building for a longer time period, such as one year. Nevertheless, several building applications require a prediction of the vertical distribution of the indoor relative humidity and temperature under transient boundary conditions. This paper presents the development and possibilities of a coupled TRNSYS-zonal model which allows for accounting the stratification in a room. The zonal model is based on the so-called block model proposed by Togari[1] and describes a one-dimensional heat and mass transfer between horizontal layers. The goal of this preliminary study was to examine the effect of parameters such as the number of layers, the value of the heat convection coefficient and the value for the time step. To validate the model the case of natural convection in a test room (3m x 3m x 2.5m ) described by Arai and Togari had been used .
Keywords
verification, multizone model, coupling, Building simulation, vertical temperature distribution

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Chicago
De Backer, Lien, Jelle Laverge, Arnold Janssens, and Michel De Paepe. 2014. “On the Coupling of a Zonal Model with a Multizone Building Energy Simulation Model.” In 10th Nordic Symposium on Building Physics, Proceedings, ed. Jesper Arfvidsson, Lars-Erik Harderup, Anders Kumlin, and Bitte Rosencrantz, 71–78.
APA
De Backer, Lien, Laverge, J., Janssens, A., & De Paepe, M. (2014). On the coupling of a zonal model with a multizone building energy simulation model. In J. Arfvidsson, L.-E. Harderup, A. Kumlin, & B. Rosencrantz (Eds.), 10th Nordic Symposium on Building Physics, Proceedings (pp. 71–78). Presented at the 10th Nordic Symposium on Building Physics (NSB 2014).
Vancouver
1.
De Backer L, Laverge J, Janssens A, De Paepe M. On the coupling of a zonal model with a multizone building energy simulation model. In: Arfvidsson J, Harderup L-E, Kumlin A, Rosencrantz B, editors. 10th Nordic Symposium on Building Physics, Proceedings. 2014. p. 71–8.
MLA
De Backer, Lien, Jelle Laverge, Arnold Janssens, et al. “On the Coupling of a Zonal Model with a Multizone Building Energy Simulation Model.” 10th Nordic Symposium on Building Physics, Proceedings. Ed. Jesper Arfvidsson et al. 2014. 71–78. Print.
@inproceedings{5645024,
  abstract     = {The conditions in one zone is often treated as ‘fully mixed’ in Building Energy Simulation programs (BES) e.g. TRNSYS. By contrast, Computational Fluid Dynamics (CFD) are too complex and time-consuming to predict temperature and relative humidity in a building for a longer time period, such as one year. Nevertheless, several building applications require a prediction of the vertical distribution of the indoor relative humidity and temperature under transient boundary conditions. This paper presents the development and possibilities of a coupled TRNSYS-zonal model which allows  for accounting  the stratification in a room. The zonal model is based on the so-called block model proposed by Togari[1] and describes a one-dimensional heat and mass transfer between horizontal layers. The goal of this preliminary study was to examine the effect of parameters such as the number of layers, the value of the heat convection coefficient and the value for the time step. To validate the model  the case of natural convection in a test room (3m x 3m x 2.5m ) described by Arai and Togari  had been used  .},
  author       = {De Backer, Lien and Laverge, Jelle and Janssens, Arnold and De Paepe, Michel},
  booktitle    = {10th Nordic Symposium on Building Physics, Proceedings},
  editor       = {Arfvidsson, Jesper and Harderup, Lars-Erik and Kumlin,  Anders and Rosencrantz, Bitte},
  isbn         = {9789188722539},
  keywords     = {verification,multizone model,coupling,Building simulation,vertical temperature distribution},
  language     = {eng},
  location     = {Lund, Sweden},
  pages        = {71--78},
  title        = {On the coupling of a zonal model with a multizone building energy simulation model},
  year         = {2014},
}