The 25th AIVC Conference, Ventilation and retrofitting, was held in Prague, Czech Republic, 15- 17 September 2004.

Contains 51 papers

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This paper summarizes the work within the EU RESHYVENT project in regard to design parameters for the performance assessment of hybrid ventilation systems. A framework for performance assessment based on simulation was developed.
Dorer V., Weber A.
COOLHOUSE demonstrates the use of passive cooling techniques in southern regions of Europe which are aimed at giving comfortable summer conditions in domestic scale buildings without using mechanical cooling systems.
Burton S., Fjearem A.
How can hybrid ventilation and natural ventilation significantly improve the indoor climate in retrofitted office and education buildings?
Andersen A., Hagelskjaer S., Havgaard M.
This paper deals with the relevance of Computational Fluids Dynamics (CFD) results confronted tomeasurements carried out under uncontrolled thermal conditions.
Akoua J.J.A.A., Allard F., Beghein C., Collignan B., Millet J.R.
Recent studies in Switzerland showed that in large non residential buildings, which can be compared for typology and ventilation needs, the consumption of electricity for mechanical ventilation can vary considerably from case to case.
Bozzolo D., Gattoni L.P., Laube G.
The purpose of this system is to provide one improved ventilation system allowing significant good indoor air quality, heating (and cooling) energy savings and acceptable thermal comfort on summer, by using especially renewable energy.This concept
Jardinier M., Berthin S.
This paper addresses the issue of the compliance of residential ventilation systems with building regulations.
Carrié F.R., Garin D.
The aim of this paper is to investigate the effect of improved air distribution on symptoms and self-evaluated productivity in a landscape office in which the air was distributed with ventilated cooled beams.
Niemelä R., Kemppilä S., Korhonen P., Nykyri E., Reijula K., Seppänen O.
More than 700 million of measured data, 730 days, 55 dwellings: the HR-VENT hybrid ventilationdemonstration project applied in NANGIS (France) on a set of occupied collective dwellings is closely linked to its stakes.
Siret F., Savin J.L., Jardinier M., Berthin S.
An idea to build a demonstration house fitted with a hybrid ventilation system arose when Brno University of Technology joined the RESHYVENT project. There has not been much attention paid to the residential ventilation in the Czech Republic.
Jicha M., Charvat P., De Gids W., Meester A.
Within the EU RESHYVENT project four demand controlled ventilation systems have been developed, each one for a specific application field. The scientific support work for the industries has been reported in a number of documents.
Op't Veld P.
A research project aimed at investigating IAQ and thermal, acoustic and visual comfort was carried out in Italian high school and university classrooms.
Corgnati S.P., Viazzo S.
The article describes the influence of the supply air devices that are part of hybrid ventilation system which is being developed within a EU funded project RESHYVENT as a part of this project, on thermal comfort in living-room of a three-bedroom
Scholler M., Katolicky J.., Jicha M.
The Dutch housing stock consists for about 70% of single family houses with an average N50 of about 7-9 ACH and for 30% of apartments with an average N50 of about 3-4 ACH.New single family houses are much more airtight.
Jacobs P., de Gids W.F., Kornaat W.
School buildings in Flanders are quite old. They cause concern not only about energy efficiency but also about thermal comfort, indoor air quality, speech intelligibility and visual comfort.
Hens H., Muyldermans S., Saerens
The Minimum Ventilation Rate standard for dwellings is essential not only to provide occupant health and comfort, but also to remove and dilute the dominant pollutants.
Yoshino H., Murakami S., Akabayashi S.I, Kurabuchi T., Kato S., Tanabe S.I., Ikeda K., Osawa H., Sawachi T., Hukushima A., Adachi M.
Major ventilation developments covering systems, measurements and design methods have taken place over the last 25 years. Our understanding about the impact of ventilation on the indoor environment and energy use has also evolved.
Liddament M.W.
This paper presents ventilation systems with longitudinal counterflow spiral recuperators. Heat transfer losses in ventilation system can be reduced by increasing the length of the recuperator, but in this case pressure drops increase.
Admski M.
In this paper, the current situation of Portuguese residential buildings in terms of ventilation systems ispresented.
Ferreira M., Corvacho H., Alexandre J.L.
The airtightness of ventilation ductwork is an important element of the global performance of ventilation systems.
Barles P., Boulanger X., Buseyne S.