English

For that paper, the flow field and the emission field of VOCs from the surface of building materials in a FLEC (Field and Laboratory Emission Cell) cavity are investigated by 3D CFD analysis. Emission phenomena controlled by internal diffusion, or by external diffusion, or by mixed diffusion are studied. The results and conclusions are presented.

This paper demonstrates how to use the inverse CFD model with the quasi-reversability equation and numerical scheme for the identification of gaseous contaminant sources in a two-dimensional aircraft cabin and in a three-dimensional office. That method is very useful to find where, what and how contamination has happened. The results are presented.

For the building project of the skilled nursing facility at the Washington veterans home in Washington state, natural ventilation with a complementary mechanical system has been chosen. The mechanical system features, energy efficiency, indoor air quality and thermal comfort, additional sustainable features are presented along with effective solutions. For the design team, staying focused on sustainability and quality of life issues was vital.

For that study, two tests were conducted to study the effects of HVAC system operation on contaminant uptake and distribution : two scenarios of tracer gas experiments were performed on an existing building simulating an external release. For the first experiment there was no action by the building controls. For the second one the outside air-handling unit was shut off along with the closing of the outside air damper, simultaneously with the beginning of release. The results are presented. Several additional operational issues should be addressed.

In this paper, the costs of asthma are analyzed ( the direct medical costs, the absenteism) and home environmental interventions to reduce asthma triggers are presented : mechanical methods that are effective both in reducing allergen loads and educational methods for asthmatic children and their parents. The combination of interventions has proven cost effective in studies that have employed them.

This article deals with the perception of locally applied airflow from personalized ventilation air terminal devices by tropically acclimatized people. During the experiments, 24 subjects (male and female) were exposed to local airflow from the front and towards the face at six air velocities (from 0.15 up to 0.9 m/s), at ambient temperatures of 26 C and 23.5 C and local air temperatures of
26 C, 23.5 C and 21 C. During each combination that was maintained during 15 minutes, the subjects responded to questionnaires on their thermal and draft sensations.

In that paper, an experiment conducted on decreasing VOC concentration in rooms made with adsorptive building materials is reported. The experiments and CFD analysis show those materials have a fairly strong effect of decreasing VOC concentrations in rooms.

The conclusions of an earlier research on humidity control in stand-alone houses are first presented in that paper, then a discussion follows on RH control targets , observed RH levels and the levels at which mold growth occurs. Then a second round of experiments are presented, and compared to the previous ones. The performance of 7 humidistat models are examined and a new control stategy is proposed.

This article examines the effectiveness of air cleaners, ranging from portable to duct-mounted devices. For VOCs removal or combined removal of VOCs and particles there is no fully established standard testing method. To fill this gap two studies have been performed using the stainless steel chamber test facility at Syracuse University, the summary of test results is presented for sorption-based air cleaners, UV-PCO devices, Ionizers and Ozone generators.

The effect of building recirculation rates on the concentrations of secondary organic aerosol (SOA), resulting from reactions between indoor limonene and ozone is examined in that study. The experiments have been carried out in a large environmental chamber using four recirculation rates, a constant outdoor air exchange rate , and constant emission rates for limonene and ozone. The results are presented.