The part-load dehumidification performances of three temperature control strategies (chilled water flow control, bypass air control, and variable air volume control) are compared in that paper. For the study of the part-load performance of those control strategies, coil simulations are used. The coil model has been validated. Simulation results and conclusions are presented.

This study focuses on the onset of natural convection in the insulation, on the one hand , and discusses the influence of forced convection on the other hand. Experimental studies were carried out in small-scale measurement apparatus, in-situ and large-scale laboratory measurements were made, along with numerical and theoretical work on convection in attic insulation.

For that investigation, the authors focused on moisture modeling. A new model is described, it is based on a CFD tool enhanced to include both detailed modeling of airflows in rooms and heat and moisture transfer in walls. The impacts of different boundary conditions are investigated ,in a 3D configuration. The way they influence microclimates in room are analyzed too.

This paper presents laboratory-measured performance of seven relatively new and large fan-filter units (FFUs). Their performance is compared to the one of smaller FFUs. That comparison was based on a set of performance metrics such as total pressure efficiency and energy performance index. Recommendations are provided too for further investigations to improve energy efficiency of FFU applications.

Few studies have been published on comparison of allergen levels in schools in different parts of the world. The main aim of that study was to measure allergen concentrations in settled dust and in air samples collected in selected primary Korean schools and then to compare them with a similar one in Sweden. The second aim was to compare the reported symptoms among pupils in those schools by use of a questionnaire. Correlations between pet-keeping at home and allergen levels in the Korean classrooms were then investigated.

The aim of this paper was to characterize selected IAQ parameters in a mid-size school district, then to assess the variability in polllutant levels between and within schools and to link pollutants to classroom activities, ventilation rates, and other factors.

For that study a full-scale model of an aircraft cabin section inside a climate chamber has been investigated. A powerful experimental facility was provided for the exploration of issues associated with the cabin environment and the comfort of passengers and crew. A wide range of parameters and equipment have been explored. The investigations have shown that increasing aircraft cabin humidity by decreasing the ventilation flow rate of fresh outside air would not reduce SBS symptoms typical of the cabin environment.

For that study, the determination of concentration of nitrogen dioxide and formaldehyde has been carried out in 96 homes in Quebec city. It appears that NO2 concentrations in homes were positively correlated with air change rates and elevated in homes equipped with gas stoves and Formaldehyde were negatively correlated with air change rates and significantly elevated in homes heated by electrical systems.

On a prototype system for local air-conditioning named personal microclimate system (PERMICS), ventilation effectiveness was measured. A new parameter based on the relative decrease of tracer gas in the first minute of system operation has been introduced, its usefulness has been verified by simulation results from commercial CFD software. This new parameter makes possible quick measurements of the local efficiency of ventilation systems.

The aim of that study was to compare the aerial contaminants concentrations between the levels of ventilation rate on the one hand and to determine the variation pattern of aerial contaminants affected by the ventilation rate. Results and conclustions are presented.