English

This paper describes the case of the Ecole du Tournant in the province of Quebec. This school is greenhouse gas free and is 80 % more energy efficient than a similar school built according to the Model National Energy Code for Building (MNECB). That result has been obtained thanks to an innovative design method, its envelope's quality, its high efficiency lighting systems, low-energy HVAC system and intelligent control system.L

Nine patients and 34 buildings (homes, various shops, offices, a library, hospital departments and sport centers) were included in that study. For every patient, two "non-problem" and two "problem" buildings were selected for sampling. A multivariate VOC model was used for the classification of "problem" and "non-problem" buildings .The result of the study showed a difference in the collected VOC data in the two types of buildings , with a systematic difference in the chemical composition of the air in the buildings.

This paper presents a simple and indirect method to consider the influence of persons' movements on contaminant transport in an operating room. The movements have been modeled by CFD. It appears that they might cause a local but serious risk of transport of bacteria from the non-clean zone to the clean zone. The findings can improve the practical risk assessment of unintended transport of bacteria during operations.

In this paper three real-world air-handling system problems are examined : the issues are discussed, troubleshooting techniques, solutions and lessons learnt are presented. The importance of design-phase integration of components is thus illustrated.

Many of the dedicated outdoor air systems designed and installed today are suboptimal. The aim of this paper is to discuss the ways to optimize their design in order to lower both their installed cost and energy use.

The aim of this study was to develop a theoretical method to calculate the effectiveness of Indirect Evaporative Cooling (IEC) with condensation from primary airflow.For this study, a set of analytical equations has been developed , to calculate precisely the overall performance through a specified procedure for the complicated IEC process.The theoretical results have been validated by the performance of an experimental test

To vent or not to vent attics or roofs is a design and construction choice, not a requirement determined by physics or by building codes. In this paper the advantages and drawbacks of venting or unventing are presented :Vented attic/roofs designs work best with airtight ceiling interfaces and when air handlers and ductwork are not within attic spaces.Unvented attic/roofs designs have the advantage of providing conditioned spaces for air handlers and ductwork. But they require different approaches in different climate locations.

Until recently the health community lacked a coherent, and compehensive dataset describing the extent and distribution of ill-health.Thanks to the Global Burden of Disease (GBD) database, updated yearly since 1996, a broad set of additional analyses can be done : 200 causes of death and illness by age and sex, separately for 14 regions of the world have been delineated.In 2000, the World Health Organization (WHO) has brought together about 100 specialists from 30 institutions worldwide to conduct a first large-scale multi-risk-factor Comparative Risk Assessment (CRA) exercice.Since all the

For that study, two types of air terminal devices for a personalized ventilation (PV) system in conjunction with either a mixing or a displacement total-volume ventilation system were installed in a mock-up of an office. The performances of those PV systems were studied in regard to inhaled air quality and thermal comfort as well as the transport of pollution within the occupied zone and between occupants.

That study about the development of new convection correlations for rooms with cooled ceiling (CC) panels has two main objectives : - to develop convection correlations for the CC surfaces in rooms with only natural ventilation. - to quantify the influence of the high aspiration diffuser on convection at cooled ceiling surfaces as well as at other wall and floor surfaces.