Reference : Dynamic simulations to develop a natural ventilation concept for an office building

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Energy
	To cite this reference:	http://hdl.handle.net/10993/23928

Title :	Dynamic simulations to develop a natural ventilation concept for an office building
Language :	English
Author, co-author :	Thewes, Andreas [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Maas, Stefan [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Scholzen, Frank [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Waldmann, Danièle [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Zuerbes, Arno []
Publication date :	2010
Main document title :	8th International Conference on System Simulation in Buildings
Collection and collection volume :	http://www.ssb2014.ulg.ac.be/index.php?page=Last-Editions
Peer reviewed :	Yes
Audience :	International
Event name :	8th International Conference on System Simulation in Buildings
Event date :	2010
Event organizer :	University of Liège
Event place (city) :	Liège
Event country :	Belgium
Keywords :	[en] Thermal comfort ; Natural Ventilation ; night ventilation
Abstract :	[en] The Sustainability Group of the University of Luxembourg defined for their new buildings a maximum thermal end-energy of 14 kWh/(m3a) and an electricity consumption for HVAC and lighting below 6 kWh/(m3a). Therefore it was necessary to avoid active cooling loads and mechanical ventilation in the offices and small lecture rooms. The well insulated and air-tight façade, including special outside shading elements which were designed as a grid over the complete building envelope, was an essential given architectural element of the building. Therefore further external shading devices were not applicable. The only possibility to have an influence on solar gains was to optimize the window size, the glazing type and potentially an internal shading device. Furthermore, to prevent the risk of overheating during the summer period, it was necessary to reduce the internal gains from lighting and IT-equipment. Hence detailed dynamic simulations using TRNSYS and TRNFLOW were done to evaluate the thermal comfort without air-conditioning and mechanical ventilation. The effects of optimizations like a state-of-the-art lighting control system or a window-based night ventilation, as well as the influence of the effective thermal inertia of the building were analyzed. The assumed natural ventilation rates were calculated by combining TRNFLOW and TRNSYS simulations and by the software LESOCOOL.
Research centres :	FSTC, RUES
Funders :	University of Luxembourg - UL
Permalink :	http://hdl.handle.net/10993/23928
Other URL :	http://www.ssb2014.ulg.ac.be/index.php?page=Last-Editions

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