English

This paper after its first chapter about commissioning, presents the methodology used in the first re-commissioning phase of the CAMET HVAC system, with its principles and facts.Commissioning is a unique opportunity, for all partners concerned, to learn a lot about the realbehavior of a HVAC system and to restore people's confidence in air conditioning.

In developed countries, the concentrations of indoor pollutants are very similar to those outdoors. 3 basic strategies are proposed to reduce occupant exposure to indoor contaminants : 1. Building air tightening and pressure management2. Ventilation and air filtration3. Contaminant removalIn poor countries, the use of advanced ventilation and filtration techniques is not feasible at all, natural ventilation may be one of the more effective solutions

IQ-Test is a Thematic Network supported by the European Community under the EESD Programme.The objective of IQ-TEST is to further develop common quality procedures for the PASSYS/PASLINK test cell facilities that exist in 12 European countries. This should consolidate thenetwork, integrate the new test sites and strengthen its common approach of support for new product developments in the field of innovative building components.Round robin tests are underway to assess both the inter-site quality of testing and analytical procedures of the participants.

The first part of this article insists on the importance of a good ventilation system (polluted air exhaust, humidity, filtration, VOCs exhaust). The second part deals with a test house, equipped with either decentralized or centralized ventilation system. CO2 and ventilation rate measurements being compared, the validation of a model for the determination of the indoor CO2 concentration levels in one room of the house has been made.

A kind of protocol for the desinfection of air-handling ducts is presented in this paper with its different steps : relationship with the customer, available techniques, prerequisites for the desinfection, choice of the products and the desinfection itself.
The limits of the system are presented too along with possibilities to develop.

In so far as prevalence of asthma and allergies is different from East to West Germany, a suggestion that it was associated with lifestyle factors was made. The endotoxin levels in dust collected from more than 4000 infants and mothers mattresses were compared. But none of the predictors analyzed and even a combination of predictors can be used as a surrogate for high or low mattress dust endotoxin levels in epidemiological studies.

This paper reports on an investigation of the adequacy of CFD for the predicting isothermal pollutant transport in a large indoor space with simple geometry, no furniture and no occupants. Agreement between predictions and experimental measurements was good.

In this paper a detailed scaling analysis of a water tank experiment designed to model a large indoor space is presented, along with experimental results obtained with this model to assess the influence of furniture and people in the pollutant concentration field at breathing height.

Both in domestic and public environments, dampness in buildings is a risk factor for health effects. A European group of scientists has reviewed the literature on that subject including mite exposure over the period 1998-2000. That review has shown that there is a huge need for multidisciplinary reviews in scientific papers including associations between indoor environmental factors and health effects.

The European Community SAVE directive 76/93 makes mandatory for member states to implement an action called Energy Labelling of buildings. The work has been divided in two phases, the first one deals with Officially protected buildings and the second one called CALENER that includes all kinds of buildings.
This Energy Labelling should consist of a description of the energy characteristics and some information about energy efficiency. Its aim is to reduce CO2 emission by means of a parallel reduction in energy consumption.