Reference : Description of a Modelica-based thermal building model integrating multi-zone airflow...
Scientific congresses and symposiums : Unpublished conference/Abstract
Engineering, computing & technology : Energy
http://hdl.handle.net/2268/197478
Description of a Modelica-based thermal building model integrating multi-zone airflows calculation
English
[fr] Description d'un modèle thermo-aéraulique de bâtiment dans Modélica
Ransy, Frédéric mailto [Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques >]
Gendebien, Samuel mailto [Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques >]
Lemort, Vincent mailto [Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques >]
23-May-2016
15+1
Yes
No
International
The 12th REHVA world congress CLIMA 2016
Du 22 au 25 mai 2016
Aalborg
Danemark
[en] Modelica ; Building model ; Airflow network ; Combined model ; Thermal model
[en] Nowadays, in newly built housings, energy losses due to the ventilation can represent up to 50 % of the total building energy consumption. As a result, heat recovery ventilation units are widely used in order to save primary energy and different control strategies for ventilation systems are investigated. For instance, demand control ventilation sounds like a promising solution to decrease the energy impact of the ventilation system in the residential sector. An accurate building model integrating the influence of ventilation (so called thermo-aeraulic building model) is necessary in order to investigate the control and the impact of the ventilation system on a yearly basis.
The aim of the present paper consists in a description of a combined multi-zone airflow network model and thermal building model implemented in the Modelica language. The thermal model is a simplified dynamic model using equivalent thermal resistance and capacity. The airflow network is based on the traditional electrical circuit analogy. The model can be used for ventilation systems design, infiltration rate calculation, inside air quality calculation, energy consumption calculation, etc.
The first part of the paper details the multi-zone thermal building model. The results obtained from the model are compared to experimental in situ results collected in the typical single family house test facilities. Those experimental results have been obtained in the frame of the IEA-EBC Annex 58.
The second part of the paper introduces the multi-zone airflow network building model. Obtained model results are compared with the results provided by a typical multizone airflow analysis software, for a simple three zones test case.
The third part of the paper describes the coupling between both thermal and airflow models. The different numerical problems encountered are described and solutions are discussed.
Laboratoire de Thermodynamique de l'Université de Liège
Researchers ; Professionals
http://hdl.handle.net/2268/197478

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