Reference : Energy efficiency and indoor aire quality os seminar rooms in older buildings with an...

	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Energy
	Focus Areas :	Sustainable Development
	To cite this reference:	http://hdl.handle.net/10993/40765

Title :	Energy efficiency and indoor aire quality os seminar rooms in older buildings with and without mechanical ventilation
Language :	English
Author, co-author :	Maas, Stefan [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	da Cruz Antunes, Joël [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > >]
	Steffgen, Georges [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Integrative Research Unit: Social and Individual Development (INSIDE) >]
Publication date :	Oct-2019
Journal title :	Bauphysik
Publisher :	John Wiley & Sons
Volume :	41
Issue/season :	October 2019, Heft 5
Pages :	243-251
Peer reviewed :	Yes
Audience :	International
ISSN :	0171-5445
e-ISSN :	1437-0980
City :	Berlin
Country :	United Kingdom
Keywords :	[en] indoor climate ; mechanical versus natural ventilation ; thermal comfort, PMV, PPD
Abstract :	[en] The present paper reports on an experimental study performed in a seminar room of the University of Luxembourg in a building of the 1970ies without a major renovation. This lecture room is typical for this building period and has a capacity of 60 seats. It is equipped with a mechanical ventilation system that is normally in operation on workdays for 11 hours a day in semester periods (8:00-19:00h), while windows can be opened manually. A Blower-Door-Test revealed that the room is not airtight. During a year, the ventilation system was shut “on” and “off” in periods of some weeks and the consumed final-energy was measured, as well as the indoor climate assessed by physical and psychological measurements. For instance, the measured CO2 concentrations are marginally better with the ventilation system "on", which was not perceived in any way by the occupants during the investigations. It was not possible to properly identify the impact of ventilation on the consumed heat-energy, as the room could not be thermally separated from the rest of the building. But with the system “on” there was a clear increase in consumed primary energy due to the electric consumption of the fans. No relationship between the perceived percentage of dissatisfied and perceived climate could be observed. It is concluded that the typical normal operation modus is questionable for seminar rooms in older buildings with variable occupancy and that a simple shut down or semi-automatic user controlled modus by low-cost retrofit seems advantageous.
Research centres :	FSTC
Funders :	University of Luxembourg - UL
Name of the research project :	Research Unit of Engineering Sciences
Target :	Researchers ; Professionals ; General public
Permalink :	http://hdl.handle.net/10993/40765
DOI :	10.1002/bapi.201900018
Other URL :	https://onlinelibrary.wiley.com/doi/abs/10.1002/bapi.201900018
Mentions required by the publisher for OA :	-
Commentary :	-

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access Author Preprint.pdf Author preprint 781.62 kB View/Open

All documents in ORBi^lu are protected by a user license.

 

University of Luxembourg Library |  Feedback |  Legal notices Site Map