In this article, the description of of results of a different monitoring technique that consists in a continuous, unobtrusive monitoring of air-quality at 20 second intervals in 85 rooms of eight different Minnesota schools. The data are transmitted over the internet to a central project server where the data are translated into graphs and charts

That study aimed at testing the following hypothesis : a low-ventilation rate in Swedish homes brings an increased prevalence of asthma and allergic symptoms among children. A passive tracer gas method was used to measure ventilation rates.

In Helsinki metropolitan area, , the adult population spends nearly 87 % of their time in indoor environment.Thanks to mechanical ventilation systems with supply air filtering, indoor concentrations of ambient particles associated with health risks can be minimized. That study has quantified the effects of those reductions of concentrations on population exposures.

First, this paper discusses duct performance data collected from thousands of houses whose most of ducts leak and merit sealing, then discusses the Ashrae standard 152 that provides a means for rating the performance of different thermal distribution systems and quantifying the amount of energy wasted because of duct leakage.

This paper deals with the Mountain Equipement Co-op project with the aim of creating synergies for sustainable design and construction of a two-story open-space commercial retail store in Montreal. Synergies were looked for to improve the building energy efficiency such as an optimized building envelope, Geoexchange central plant, heating and cooling with radiant slabs , and an hybrid ventilation.

Dissatisfaction with the indoor environment in many buildings occurs even when existing ventilation standards and guidelines are met. Recent studies have demonstrated that mediocre IAQ has a negative impact on the productivity of office workers. In this paper, four methods are suggested aiming at satisfying the most sensitive persons in their right to healthy indoor air while saving energy consumption

Exposure risk assessment of any possible release of chemicals from manufactured products, and their possible impact on health and environment is now an important requirement by the European Commission. Environmental exposure assessment should form an integral part of the risk assessment of a biocidal product, including wood preservatives and the active ingredients. Preferably, representative data from well-designed field studies should form the basis of the exposure risk assessment.

A number of emission classification systems changed the test method and/or the classification values, like DIBT, EMICODE, and GuT. New classifications were born, e.g. Natureplus. Harmonisation of the testing protocols showed some progress. But there is also a trend to define limits for SVOC and for single substances. Not all of these parameters can be monitored with sufficient reliability. Identification of complex mixtures is done in a very different manner from lab to lab. This applies especially to terpenes and hydrocarbon mixtures.

Odors of new cars are important today for the consumers’ comfort and sensory analysis techniques are necessary to deal with that question. In order to characterize interior trim parts and materials, Renault has been using for almost seven years now an olf

The reduction of organic emissions from materials within the vehicle interior has noticeably contributed to the comfort of automobile customers over a period of approximately 20 years. Classes of materials that have been improved in this manner are soft PVC films, SMC, leather, textiles and, to cite a recent example, polyester wood coatings. PUR foams represent a class of materials that are widely used due to their outstanding and widely variable properties. However, they are still a source of undesirably high emissions as illustrated in a screening analysis by DaimlerChrysler.