The 21st AIVC Conference, Innovations in Ventilation Technology, was held in the Hague, Netherlands, 26-29 September 2000.

Contains 60 papers

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A Ventilated roof component was built and tested in the outdoor testing facilities (Test Cells) of CRES, Greece.
Dimoudi A, Androutsopoulos A, Lykoudis S
In this study, we investigated the indoor air quality (IAQ) in classrooms with exhaustventilation systems and in naturally ventilated classrooms. In the latter, we found peak CO2-concentrations of more than 4000 ppm.
Weinlader H, Beck A, Fricke J
Natural ventilation is one of the most fundamental techniques to reduce energy usage inbuildings.
Zhai Z, Hamilton S D, Huang J, Allocca C, Kobayashi N, Chen Q
A number of single tracer gas techniques (decay, step-up, homogeneous constant emission,inlet pulse and homogeneous pulse) suitable for measuring the local mean ages of air in multizonebuildings exist, each having their advantages and drawbacks.
Stymne H, Hansson P, Boman C A
A Tool Kit was developed to assess indoor air quality.
Richardson G, Eick S A, Harwood D J
There has been a growing interest in the use of natural ventilation in buildings to supplement orreplace mechanical air supply systems.
Sharples S, de Salis M, Oldham D
The traditional way to dehumidify the outdoor air in an A/C-system is by cooling the air downbelow the dew point temperature. For this process a refrigeration system is necessary torealise these low temperatures.
Biel S, Steimle F
A hybrid ventilation system is a two-mode system that can automatically switch between passive and mechanical mode at different times of the day or seasons of the year.
Liu J, Yoshino H
A currently unresolved problem in building design is the paradox between increasing demandfor good thermal insulation, and the requirement for ample levels of ventilation, to maintain ahealthy indoor environment.
McEvoy M, Southall R G
Dwellings airtigthness is not well known in practice, in France.When dwellings are equipped with mechanical ventilation systems (which represents about 95% of the new dwellings in France) the airtigthness can strongly influence the performance ofv
Barles P, Boulanger X
The prediction of energy use, air flows and temperatures in different rooms of a building andat different climatic conditions is very important, especially when evaluating new conceptsfor heating and ventilation systems in combination with differe
Levin P
Knowledge and estimation of the wind speed and air flow characteristics, in a city, is of vitalimportance for passive cooling applications and especially in the design of naturallyventilated buildings.
Santamouris M, Dascalaki E, Klitsikas N, Papakonstantinou K, Georgakis C
The heating degree-days method is widely used for calculation of the air change heating energydemand.
Binamu A, Linberg R
Within the EC-JOULE project "AIRLIT-PV", a new facade unit, integrating ventilation, daylighting, solar protection, intelligent local control and photovoltaic power, has been developed and is under evaluation by means of performance testing at fou
Kronvall J, et al
At sufficiently high Reynolds numbers, the discharge coefficient Cd associated with a sharplycontracting flow through a square-edged opening is, in general, taken to be constant.
Hunt G R, Holford J M
In the recent past new concepts for the building envelope have been developed with theunderlying wish to improve the energy performance of a building as well as comfortconditions in the inner spaces.
van Paassen A H C, Stec W
Dynamic computer simulations were used to compare residential ventilation methods to identifyan approach that would improve indoor air quality with minimum energy penalty while maintainingcomfort.
Shah D J
In this study a series of parametric laboratory measurements were made of the velocitiesoutside, ve, and inside, vi, a full-scale louver positioned in a rectangular opening located in avertical wall forming part of a 1m x 1m x 2m deep model room.
Sharples S, Maghrabi A
This paper presents an experimental study of natural ventilation induced by combined forces of thermal buoyancy and opposing wind in a single-zone building.
Andersen A, Bjerre M, Chen Z D, Heiselberg P, Li Y
At present the design pressure difference for air inlets in The Netherlands is 1 Pascal. This paperinvestigates the question whether or not this value is still appropriate.In recent years the airtightness of dwellings has improved remarkably.
Vollebregt R, Vrins E

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