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

Lessons learned from the application of the Swedish Boverket-OVK procedure in Belgium.

In the framework of the Flemish “Kantoor 2000” research project, the BBRI invited a Swedish inspector to apply the Boverket-OVK procedure for checking the ventilation installations in three Belgian buildings. This experience was most illustrative for the actual status of ventilation systems in Belgium. The procedure being very simple to apply was still very effective and able to detect most problems with ventilation installations encountered in these buildings. To control the quality of ventilation systems, three aspects of the building process are important:

Occupant perception of running costs of domestic mechanical ventilation systems.

An investigation of the performance of a recently built estate of over 50 low-energy rental dwellings indicated that there was a slight but significant increase in electricity use of the “super low energy” designs over the control “low energy” designs. The “super low energy” designs included, in addition to the enhanced fabric specification of the “low-energy” types, active systems such as mechanical ventilation, solar DHW panels and enhanced space heating systems.

When does an atrium enhance natural ventilation?

This paper investigates passive displacement flows in a simple, two-compartment building that comprises a single storey connected to an atrium. Heat gains in the storey and solar gains in the atrium create a stack pressure which drives a ventilating flow. A model is developed to determine the steady flow rate and thermal stratification for a range of heat gains, storey and atrium heights, and ventilation opening areas.

Ventilation in US manufactured homes: requirements, issues and recommendations.

US Manufactured homes are required to be built to Department of Housing and Urban Development’s Manufactured Home Construction and Safety Standards (MHCSS.) The National Fire Protection Association recently updated ventilation standards for manufactured h

Ventilation in the French homes: survey of the attitudes and behaviour of private citizens.

ADEME (French Agency for Environment and Energy Management) regularly commissionssurveys of the attitudes and behaviour of private citizens with regard to energy, andperiodically it also commissions more detailed surveys relating to a particular appliance.The purpose of the survey is to take stock of changing attitudes in households with regard totheir use of energy and to assess the impact of ADEME's policies relating to the home.The questionnaire covers the following aspects: description of the work carried out during theyear surveyed, tax allowances and/or grants applicable to certain ki

The introduction of ventilation efficiency in the Italian standard UNI 10339.

Designers, professionals and practitioners are currently making evaluations and sizing ventilation systems and apparatus in Italy on the basis of the Italian standard UNI 10339. This prescriptive standard is relatively recent, being issued in June 1995.

Simulating quality in relation to ventilation systems: challenges for an energy performance regulation.

Ventilation systems should contribute to good indoor air quality conditions and should be energy efficient. In practice, one often finds ventilation systems which often do not give the appropriate indoor climate conditions and/or which consume a lot of energy.""In an increased number of European countries, legislation exists (France, Netherlands,...) or is under preparation (Belgium, Greece,...) putting requirements on the total energy use of the building. Part of this energy use deals with ventilation (thermal energy and fan energy).

Pollutant dispersion simulated with tracer gas in a naturally ventilated test house.

The New Zealand Building Code has kept with tradition in allowing residential building ventilationdesigns based entirely on openable window areas. Working against this tradition, however, is a trend inNew Zealand towards more airtight construction and declining reliance on open windows. Contributingto this trend are changing patterns of occupancy with fewer people at home during the working week,along with developing concerns for personal security.

Laboratory dust loading test method of exhaust air terminal devices.

Loading of ventilation components with dust may affect air handling systems performances andcontribute to poor indoor air. A lot of standardised test method for ventilation componentscharacterisation - filters, fans, heat exchangers, extract air terminal devices etc. - exist but allthese methods describe initial performance determination except for filters which are alsocharacterised by dust loading test.The aim of our study was to define a laboratory dust loading test method of extract air terminaldevices and to validate results comparing to on-site results.