English

In this paper a proposal has been made for the identical testroom configuration, which should be used for the measurements and numerical simulations of the identical test cases. The proposal includes the positions of the measuring points in the testrooms. I have used the collected data of testrooms from several participants and the agreements made at the second expert meeting in Warwick. Unfortunately it was not possible to find common testroom dimensions for all participants, so alternative dimensions for some participants are also given.

In this paper a proposal has been made for the radiator to be used for the measurements and numerical simulations of test case d: 'free convection with radiator'. The selection of the radiator is based on the identical testroom configuration as described in 'R.I. 1.3 : Test room, identical testrooms'. Thisconfiguration consists of a window with single glazing. However data for double glazing is also presented. A radiator of a well known manufacturer has been chosen, in order to make sure that the radiator is available in each participating country.

The purpose of the proposed task is to create databases for validation on several different buildings. Data are needed as inputs for simulation programs (e.g. pressure coefficients, infiltration parameters) and more data, including air flow patterns and differential pressures, will be used to compare the results of the simulation programs with the measured values. These data bases shall contain high quality measurements results, on a given building, of climatic data, building data, inhabitant data and flow patterns.

In the field of ventilation engineering the understanding of jet types of flow is well established. However, the behaviour of buoyant flows with high initial Archimedes numbers has been much less explored. The aim of this short note is to highlight some of the differences between ordinary jet flow and the discharge from low velocity air terminals. Results are presented both from tests carried out in a full scale mock up and from model tests with water as operating fluid.

One method of evaluating interzone airflow rates makes use of perfluorocarbon tracers (PFTs)(4). The PFTs are emitted at asteady rate by miniature permeation sources (the physical size is 7 mm diameter and 30 mm length) with a different PFT being