Numerical simulation of IAQ and energy need by COMIS model: (outcome of Annex 27: Evaluation and demonstration of domestic ventilation systems).

The purpose of this research is to give an overall prospect of the performance of 4 kinds of ventilation systems for dwellings using numerical simulation under various conditions. The total number of combinations of various parameters for the calculation is 174. Calculations for pollutant concentration, humidity and condensation, interior pressure and airflow rate, heat energy by ventilation, etc. are performed hourly through the heating season. In this paper, a new method was described to evaluate the effect of ventilation system under climatic conditions for each type of dwelling with an airtightness level from the points of view of indoor air quality and energy need. In addition, by means of statistical method, the impact of various parameters on IAQ and ventilation systems was discussed.