The study of the particle pollution in an office under two different ventilation modes is presented in this paper. The concept of perceived particle intensity has been applied to evaluate the particle pollution from copiers under mixing ventilation and displacement ventilation. For the particle concentration distribution , measurements of the different sizes of particles and a numerical simulation have been made. The results are presented.
A comparison is made of the performances of various heating, ventilation and air conditioning (HVAC) arrangements in eliminating pollutants in working environmemnts in Taiwan. The airflow of various simulation routes are evaluated. Simulation results are used to identify the vent arrangements for a ventilation efficiency.
For that study, field measurements of the indoor climate and ventilation performance have been carried out in Estonia in 28 lightweight timber-frame detached houses. Temperature and relative humidity were continuously measured for each house at 1 hour interval over 1 year period. Results and comments are presented.
The paper is a presentation of selected results obtained by questionnaires, measurements and simulations of ventilation processes in typical blocks of flat and office buildings in Silesia. The aim of this study is to present the investigations and to sum up the effects of airtightness and natural ventilation on indoor environment.
The passive cooling techniques such as night time cross ventilation is potentially an interesting strategy to provide substantial cooling energy savings in warm climates. Night cooling ventilation efficiency is determined by three main factors: the external air flow rate in the room, the flow pattern and the thermal mass distribution.
The severe summer climate, the actual trends in building design (imported from northern latitudes) and the rising living standard in Mediterranean countries have promoted a massive and unnecessary use of air conditioning systems. This creates considerable problems at peak load times,
increasing the cost of electricity and disrupting the energy balance in those countries. Consequently,
the energy consumption for cooling of new and existing buildings will become a serious problem in the near future.
A field study was undertaken to evaluate and define the role of different filter efficiencies in attaining and sustaining clean HVAC componenets and distribution systems. The results of that fiels study are discussed in that article.
A typical office building in Honk Kong was used to study the effect of air supply temperature on the performance of displacement ventilation. That system appears to provide acceptable thermal comfort at certain air supply temperatures.
In a naturally ventilated flat, indoor and outdoor characteristics of particulate matter (PM) were studied .In that aim PM concentrations were measured in winter and summer. The results and their analysis are presented.
We reflect the results and conclusions of a study on the air’s motion in four old Surgery Rooms in a Basque Country (Spain) hospital that were to be reformed. Our purpose was to understand the airflow trajectory in the surgery rooms, to detect the turbule
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