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
21st AIVC Conference - Hague, Netherlands- 26-29 September 2000
The 21st AIVC Conference, Innovations in Ventilation Technology, was held in the Hague, Netherlands, 26-29 September 2000.
Contains 60 papers
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
Validation of a computational fluid dynamics simulation of a supply air 'ventilated' window. | 2000 | English
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.
The influence of variations in base temperature over the calculated ventilation energy demand. | 2000 | English
The heating degree-days method is widely used for calculation of the air change heating energydemand.
A new facade unit integrating ventilation, daylighting, solar protection, intelligent local control and photovoltaic power. | 2000 | English
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
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.
The discharge coefficient - experimental measurement of a dependence on density contrast. | 2000 | English
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.
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.
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.
This paper presents an experimental study of natural ventilation induced by combined forces of thermal buoyancy and opposing wind in a single-zone building.
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.
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.
The role of simplified ventilation modeling for the application of low energy design: a library case study. | 2000 | English
This paper discusses how simplified thermal and ventilation tools could be used during thefeasibility study of buildings to demonstrate the advantages of natural and low energyventilation strategies.
Performances of a new generation high efficiency heat recovery units for domestic ventilation. | 2000 | English
In 1998 the Dutch ventilation industry launched a new generation of domestic ventilation systems on the market with high efficiency heat recovery applying counter flow heat exchangers and DC fans.
Performance of demand controlled ventilation: case study, energy savings and practical rules. | 2000 | English
In order to assess the real performances of different demand controlled ventilation (DCV)systems, two of them were installed in meeting rooms of an office building.The first system is controlled by movement detection on terminal units and has been
Conventional models of building occupants' environmental preferences such as thermal comfort are used to give guidelines for the average environmental conditions that will satisfy large groups of people.
Airflow rate performance of various ventilation systems. Results of measurement in a typical Belgian dwelling. | 2000 | English
This paper presents the results of ventilation measurements taken in a non-occupied one-storey dwelling situated in the countryside.
Design of ventilation systems in industrial buildings. A computational approach of displacement ventilation in paper industry. | 2000 | English
In this paper, the ventilation of a “crêpe” paper-processing workshop containing dryers, which generate a high thermal load, is considered. Displacement ventilation has been used for many years in industries with high thermal load.
Schaakwijk project in Utrecht, The Netherlands. Passive ventilation strategy using a sun room. | 2000 | English
There has been a growing interest in the use of natural ventilation in buildings to supplement orreplace mechanical air supply systems.
The relative importance of ventilation in the energy balance of buildings has been increasing,as a consequence of control of heat exchanges through the envelope and internalgains.