LoginKnowledge 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.
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
Volume content
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.
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.
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.
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.
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.
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
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.
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.
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.
The development of guidelines for performance based innovative mechanical ventilationsystems in residential and commercial buildings is included in the European Commissionproject TIPVENT Towards Improved Performances of Mechanical Ventilation Syst
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.
The humidity of room air is a necessary influence of design under the aspects of thermalbehavior, technology and conservation.The moisture absorption in the walls through sorptive materials or dehumidification on thecold window surface by dew poin
The Building Air Tightness is an important parameter on ventilation systems performanceand energy losses.Yet, the total amount of leakage is as important on performances as their effective positionin the room.Some calculations have been run accord
Infiltration has traditionally been assumed to affect the energy load of a building byan amount equal to the product of the infiltration flow rate and the sensible enthalpydifference between inside and outside.