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Performances of DAHT connected to building airthightness and indoor hygrothermal climate
Masy, Gabrielle; Lebrun, Jean; Gendebien, Samuel et al.
2011In Proceedings of the 32nd AIVC Conference
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Keywords :
building ventilation; buildings infiltrations; heat recovery; indoor air quality; fan models
Abstract :
[en] As building insulation level increases, the coupling of ventilation systems with building enveloppe airtightness becomes an important issue in order to improve buildings energy performances. A building ventilation model can be built on a set of resistances and generators in order to handle infiltration, natural ventilation as well as fan driven air flows. The model is able to assess the indoor air humidity level and the building energy balance. Double flow ventilation can be handled through decentralized air handling terminals (DAHT), integrated in window ledges. A model of DAHT can be combined with the model of a whole building envelope, including infiltrations as well as dynamic behaviour, allowing comparisons with classical ventilation systems, such as natural or hybrid systems, or with centralized double flow systems. Results regarding energy consumptions, air humidity levels and superficial condensation risks can be analysed. Fresh air flow can be calibrated in order to meet air quality standards related to indoor humidity level and CO2 concentration. The modelization of buiding indoor hygro-thermal climate allows a complete assessment of the seasonal heat exchanger efficiency, including heat recovery through the condensation of indoor air humidity when it flows through the exchanger.
Disciplines :
Energy
Author, co-author :
Masy, Gabrielle
Lebrun, Jean
Gendebien, Samuel ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Hansen, Nicolas
Lengele, Marc
Prieels, Luc
Language :
English
Title :
Performances of DAHT connected to building airthightness and indoor hygrothermal climate
Publication date :
October 2011
Event name :
32nd AIVC conference and 1st thightvent conference
Event organizer :
Air Infiltration and Ventilation Center (AIVC) and Thightvent Europe
Event place :
Bruxelles, Belgium
Event date :
12-13 October 2011
Audience :
International
Main work title :
Proceedings of the 32nd AIVC Conference
Peer reviewed :
Peer reviewed
Available on ORBi :
since 20 October 2011

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