Simulation of ventilation and indoor air quality in houses using average japanese daily schedule

In order to explain the effect of ventilation systems and airtight performance of houses in detached houses, the investigation was made on a simulation program which calculates the ventilation rates and indoor air quality. The ventilation rates and the concentrations of CO2 , CO and formaldehyde in general Japanese houses with three kinds of ventilation systems were calculated through a year in three cities of Japan. The results of the simulation showed a case in which the concentrations of the pollutants are not acceptable. And the performance of the ventilation system and the solution method of realizing these ventilation systems were discussed on the basis of the results of the simulation.