Conference article

VEPZO - Velocity Propagating Zonal Model for the prediction of airflow pattern and temperature distribution in enclosed spaces

Victor Norrefeldt
Fraunhofer-Institute for Building Physics, Germany

Gunnar Grün
Fraunhofer-Institute for Building Physics, Germany

Download articlehttp://dx.doi.org/10.3384/ecp12076279

Published in: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Linköping Electronic Conference Proceedings 76:28, s. 279-286

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Published: 2012-11-19

ISBN: 978-91-7519-826-2

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

This paper presents the VEPZO-model (VElocity Propagating ZOnal model); a discretized airflow model for indoor spaces implemented in Modelica. The model can be used to predict airflow and temperature distribution in a room. The main feature of the VEPZO model is that each zone has a characteristic velocity depending on entering and leaving airflows. This characteristic velocity is propagated into space ensuring the propagation of driving airflows. The VEPZO model can be interfaced to other models of the Modelica.Standard library. In an application example a displacement ventilation in a twin-aisle aircraft cabin is investigated.

Keywords

zonal model; airflow modeling; Modelica

References

[1] Wetter; M.; Zuo; W.; Nouidui; T.: Recent developments in the Modelica "Buildings" Library for Building Energy and Control Systems; 8th International Modelica Conference; 20.-22. march 2011; Dresden; Germany

[2] Bonvini; M.; Leva; A.: Object-oriented subzonal room models for energy-related building simulation; 8th International Modelica Conference; 20.-22. march 2011; Dresden; Germany

[3] Wurtz; E.; Nataf; J. M.; Winkelmann; F.: Two- and three-dimensional natural and mixed convection simulation using modular zonal models in buildings; International Journal of Heat and Mass Transfer; Volume 42; pp. 923-940; 1999. doi: 10.1016/S0017-9310(98)00221-X.

[4] Inard; C.; Bouia; H.; Dalicieux; P.: Prediction of air temperature distribution in buildings with a zonal model; Energy and Buildings; Volume 24; pp. 125-132; 1996. doi: 10.1016/0378-7788(95)00969-8.

[5] Norrefeldt; V.; Nouidui; T.; van Treeck; C. et al.: Erstellung eines isothermen; zonalen Modells mit Impulserhaltung; BauSIM 2010; 22.-24. september 2010; Vienna; Austria

[6] Norrefeldt; V.; Grün; G.: Validation of the velocity propagating zonal model – VEPZO; Roomvent 2011; 19.-22. june 2011; Trondheim; Norway

[7] Norrefeldt; V.; Grün; G.; Sedlbauer; K.: VEPZO - Velocity propagating zonal model for the estimation of the airflow pattern and temperature distribution in a confined space; Building and Environment; Volume 48; pp. 183-194; 2012. doi: 10.1016/j.buildenv.2011.09.007.

[8] Fraunhofer IBP: Indoor Climate Systems Flyer; 2012

[9] Wetter; M.; Zuo; W.; Nouidui; T.: Modeling of heat transfer in rooms in the Modelica "Buildings" Library; Building Simulation 2011; 14.-16. november 2011; Sydney; Australia

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