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Thermally weak envelope elements of the LESO building were examined. Thermographs of the element were taken, which show strong thermal bridges. Heat loss and air leakage were measured using the guarded zone technique. The element was found poorly insulated ...
A European project started at the end of 1992, in which current methods as well as a trained panel were used to investigate office buildings all over Europe. The main aim of this EC-Audit was to develop assessment procedures and guidance on ventilaiton and ...
Measurements ith tracer gases were performed, together with more classical temperature and air velocity measurements, on various ventilation systems installed in the test chamber of Sulzer Infra, in Winterthur. The test chamber was arranged to simulate an ...
Diverses méthodes de mesurage, utilisant des gaz traceurs, peuvent être utilisées pour déterminer l'importance des flux d'air, les caractéristiques d'un système de ventilation ou la répartition des polluants dans un ou plusieurs locaux. La décision de fair ...
IEA-ECB&CS Annex 23 program intends to provide a validated and user-friendly computer code simulating air and contaminant flows in multizone buildings. When developing such a code, which intends to be a model of the reality, it is essential to check, at ea ...
Les transferts de chaleur et de masse jouent un rôle important dans le domaine de l'énergie. Ce document présente sommairement la modélisation de quelques-uns des processus de transfert. Il faut noter que plusieurs phénomènes de transport apparemment diffé ...
La modélisation des mouvements d'air entre les diverses zones constituant un bâtiment doit permettre d'évaluer l'efficacité de la ventilation et les besoins en énergie. Pour étendre le domaine de validité du programme de calcul multi-zones, des modèles ont ...
Airflow rates, hence energy consumption, are directly affected by the amount of open area and consequently by the inhabitant behavior with respect to window opening. This report describes stochastic models using Markov chains, and used to generate time ser ...
This report summarises the work performed in Switzerland within the frame of the Joule II project "Indoor Air Quality Audit". Eight office buildings located in three important areas were audited. ...
The main air and contaminant flow paths or the spatial distribution of the age of air (or contaminant) in a room are of great interest to estimate the ventilation efficiency performance. A simple measurement method is presented, which consists to inject or ...