In the second part of this paper a simple two-way simulation method is implemented using CFD software to obtain the multiplicity behavior of laminar and turbulent indoor airflows in two-zone naturally ventilated buildings. The method used proved effective in detecting and isolating multiple solutions for different building geometries. The results and simulation data are expected to be useful for building ventilation design and smoke control engineering.
For that study 60 subjects in groups of six, were exposed for five hours to two levels of air pollution, four levels of absolute air humidity, and three air temperatures . These conditions were established simultaneously in two adjacent climate chambers (one with clean air, and the other with air polluted by carpet and linoleum). Nine objective medical tests of eye, nose and skin function were applied. The results and conclusion are presented.
This paper gives some rules for the design of commercial kitchens concerning thermal comfort, heat exhaust, cooling systems, capture and containment of effluents .
An overview of the standards developed under the EU mandate to CEN is presented in this paper.Some information on the CEN standardisation work is given along with information on how to participate and where to retrieve the information.
A robust Fault Detection and Diagnosis (FDD) strategy for centrifugal chillers is presented in this paper along with its validation using both laboratory data from ASHRAE RP-1043 and field data from a centrifugal chiller in a real building.
Five papers dealing with ventilation, comfort, indoor relative humidity, filtration and air cleaning constitute this file on "Indoor Air Quality". All the authors have in mind to obtain a good indoor air quality coupled with energy saving .
This paper highlights some of the results of ECA report n° 23 that aimed at providing information and advice on strategies for achieving a good balance between good IAQ and the rational use of energy in buildings. The major strategies are : control of p
A new mode of ventilation , the intelligent stratum ventilation, where the outlets are located at the side walls at the breathing zone level, is presented in that paper. A CFD study is undertaken and a practical example illustrates this new concept.The results are promising.
The existing analytical models for the purging of excess buoyancy by displacement and mixing ventilation have been extended to allow the authors the simulation of natural ventilation with time-varying vent areas.The resulting analytic solutions have been applied to a typical office to obtain predictions. Those predictions have then been compared to those based on a constant vent area model .
For the removal of volatile organic compounds (VOCs), zeolites can be used. This paper deals with the removal performance of toluene in gas phase. A filtration system using zeolite at different ozone concentrations and moisture conditions has been investigated. The experimental results are presented.
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