INDOOR AIR QUALITY RELATED TO TOTAL MINIMUM AIR VENTILATION RATE, AIR QUALITY AND CFD SIMULATIONS OF POLLUTION DISTRIBUTION

The air ventilation rates defined in Standard STN EN 15 251: 2007 present air change rate in which the objective benefit of proper selection of ventilation system and air distribution scheme is lost (erased) in relation to IAQ [1,2]. With help of sensory evaluation in research the total minimum ventilation rate was estimated. It was reason how to determine major boundary condition (air quantity = air ventilation rate) for minimizing of responsibility size of air quantity (quantitative component of ventilation) and maximize the impact of the choice of distribution scheme and the distribution element (qualitative component of ventilation) for transfer and distribution of pollutants in research. The total air ventilation rate for next experimental measurements was established as the intersection of three air ventilation rates according to research harmonogram. This air ventilation rate was necessary to supply to occupant to experimental classroom and also as input value to CFD simulations. Within the frame of air infiltration measurements (Description: older research, air infiltration quantification, 500 measurements for 6 categories of building types) that is presented in this paper, this value of air infiltration was determinated for an experimental classroom (Type of Buildings - Schools) at value level n(INF)=0,3[1/h] respectively q(INF)=16[litre/s]. It is average air infiltration value for Schools Buildings [3,4]. It was necessary to ensured increased air ventilation rate n(MECH)=1,0[1/h] respectively q(MECH)=53,3[litre/s] by mechanical ventilation system. These values were used and reflected in the experimental measurements and CFD simulations.