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For that study, two independent field experiments were carried out in mechanically ventilated shool classrooms receiving 100 % outdoor air. Outdoor air supply rate and filter condition were manipulated to modify IAQ. The performance of schoolwork was then measured. The conditions were established for one week at a time in a blind crossover design with repeated measures on two classes of 10 to 12 year old children. During exercices, pupils indicated their environmental preceptions and the intensity of any symptoms on visual analogue scales.

For that study, two independent field experiments were carried out in shool classrooms. The air temperature was modified either by operating or idling split cooling units installed in that aim. For one of those experiments the outdoor air supply rate was manipulated too. The conditions were established for one week at a time in a blind crossover design with repeated measures on two classes of 10 to 12 year old children. During exercices, pupils indicated their environmental preceptions and the intensity of any symptoms on visual analogue scales.

A coupled multizone-CFD program has been developed for that study with the aim to improve the multizone model by applying a CFD model to the poorly mixed zones and the multizone model to the remaining zones. By using experimental data, the coupled multizone-CFD program is validated. The calculated results obtained by the coupled program generally agreed with the experimental data, though discrepancies exist in some cases.

This paper frist reviews current and potential ventilation technologies (mechanical, natural, and passive) for residential buildings particularly for construction on North American climates. Then infiltration, duct systems, filtration options, noise and construction issues are examined too. Some of those systems go beyond the current standard by providing additional features such as air distribution or pressurization control, the market will decide the value of such features but Ashrae may consider related modifications to Standard 62.2.-2004 in the future.

For that study, an improved plum multilayer model was developed and validated to represent thermal transport in enclosures conditioned by radiant cooling and displacement ventilation systems. A new approach was developed to estimate wall plumes flow rates. The nonuniform wall plume flow rates predicted by the model agreed well with flow rates in an enclosure produced by CFD simulations.

To investigate the potential energy and indoor environmental performance of natural and hybrid ventilation alternatives in low-to mid-rise US commercial buildings in a variety of US climates was the aim of that study. The hybrid ventilation systems appeared to provide better IAQ control in most but not all studied cases .

For that paper, the literature on the effects of indoor environment on health and performance has been reviewed and existing data has been used, when possible, to develop some initial models. Quantitative relationships between ventilation rates and short-term sick leave, ventilation rates and work performance, perceived air quality and performance, temperature and performance, and temperature and SBS symptoms are presented too.

An epistemic approach for assessing an acceptable office IAQ against certain indoor air pollutant exposure limits is proposed for that study. Thanks to the prior understanding of failure rates of IAQ determimed from a number of extensive survey studies, a sample test result of pollutant levels has been quantified along with the uncertainties of different sampling schemes and the probability of satisfactory IAQ for an assessed air-conditioned office. The accuracy of the failure rates has been improved by the application of sampling correction factors and Bayesian statistics.

The main objective of that study was to determine to which extent Indoor Air Pollution from cooking represent a serious problem that need household energy intervention. The second objective was to pilot survey and monitoring instruments in the design and evaluation of household energy interventions. Measurements were made in 120 households, a questionnaire on socioeconomic parameters, house and kitchen characteristics and ventilation practices was submitted. Results are presented along with the authors conclusions.

The aim of that study was to monitor the indoor air of two public libraries in Sao Paulo to measure the particulates matters (PM10 and PM2.5). A small volume sampler, a vacuum pump, a flow metre and membranes were used to collect the particulate material. Results and conclustions are presented.