EBC Annex 20 Air Flow Patterns within Buildings


Status: Completed (1988-1991)

Operating Agent: Dr A Moser, ETH-Zentrum, Switzerland



Accurate prediction of air flow patterns within rooms and through buildings becomes more and more important for the design of today's and future HVAC systems. For maximum energy efficiency, high thermal comfort, and optimum indoor air quality, the details of the flow field and of air infiltration mechanisms must be known during the planning phase of a building.

International experts have formulated requirements for design tools and have laid the groundwork for their development. Computer codes for the simulation of single and multizone air flow have been surveyed. Based on their performance in predicting ventilation effectiveness and transport of contaminants and energy, a few programmes of different levels of complexity were selected for validation against measurements. New physical models were incorporated where necessary and tested. Advanced measurement techniques to assess ventilation effectiveness in whole buildings were developed and documented. Standardised data bases with validated information for the programme developer or directly for the design engineer have been made available.

Participants: Belgium, Canada, Denmark, Germany, Finland, France, Italy, Netherlands, Sweden, Switzerland, UK, USA



Stochastic Model of Inhabitant Behaviour
Roulet C-A, et al
Switzerland, Lausanne, Ecole Polytechnique de Lausanne, Laboratoire d'Energie Solaire et de Physique du Bâtiment, 1991,
34 pp  Download

Reporting Guidelines for the Measurement of Airflows and Related Factors in Buildings
Harrje D T, Piggins J M
UK, AIVC, 1991, ISBN 0 946075 49 2, AIVC Technical Note 32, 148 pp
Available at the AIVC Website*

A Database for Assessing Indoor Airflow, Air Quality and Draught Risk
Q Chen, A Moser, P Suter
Switzerland, Swiss Federal Institute of Technology Zurich, Energy Systems Laboratory, 1992, ISBN 90 9004682 8,
152 pp. + apps.
Out of Print

Air Flow Through Large Openings in Buildings
J van der Maas (ed.)
Switzerland, Lausanne, Ecole Polytechnique Federale de Lausanne, LESO-PB, 1992, 163 pp

Room Air and Contaminant Flow Evaluation of Computational Methods
A D Lemaire (ed.)
Netherlands, Delft, TNO Building and Construction Research, 1993, ISBN 90 6743 298 9, 82 + apps. pp

Air Flow Patterns within Buildings: Measurement Techniques
Roulet C A, Vandaele L
UK, AIVC, 1991, ISBN 0 946075 64 6, AIVC Technical Note 34
Available at the AIVC Website*

*Free of charge to enquirers in member countries, available on payment of a subscription charge to enquirers in other countries