The Book of Proceedings from the 25th AIVC Conference "Ventilation and retrofitting", Prague, Czech Republic, 15-17 September 2004.
25th AIVC Conference - Prague, Czech Republic - 15-17 September 2004
The 25th AIVC Conference, Ventilation and retrofitting, was held in Prague, Czech Republic, 15- 17 September 2004.
Contains 51 papers
Hybrid ventilation in retrofitted buildings - concepts, strategies and measurements | 2004 | English
How can hybrid ventilation and natural ventilation significantly improve the indoor climate in retrofitted office and education buildings?
This paper deals with the relevance of Computational Fluids Dynamics (CFD) results confronted tomeasurements carried out under uncontrolled thermal conditions.
The retrofit of existing ventilation and air treatment units : an experimental and methodological approach | 2004 | English
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.
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
This paper addresses the issue of the compliance of residential ventilation systems with building regulations.
Effect of improved air distribution on perceived indoor climate and productivity - A case study in a landscape office | 2004 | English
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.
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.
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.
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.
Indoor air quality in classrooms : field campaign by questionnaires and measurements | 2004 | English
A research project aimed at investigating IAQ and thermal, acoustic and visual comfort was carried out in Italian high school and university classrooms.
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
Demand controlled ventilation applicable for any air tightness level and occupancy ? | 2004 | English
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.
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.
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.
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.
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.
Natural ventilation of residential buildings in protuguese winter climatic conditions | 2004 | English
In this paper, the current situation of Portuguese residential buildings in terms of ventilation systems ispresented.
Approximatly over 90 percent of buildings in Poland are ventilated in a natural manner.
The Sint-Pieterschurch in the city of Ghent is one of the largest churches of the city. It was built in the 17th century.