Considerations in indoor and outdoor air design conditions for ventilation in civil buildings

Analyses the ventilation status of civil buildings in China. Thinks that the existing indoor and outdoor air design conditions for ventilation are not reasonable to some extent. Proposes to reconsider the determination of the conditions and to determine indoor design temperature for ventilation based on thermal comfort. Beginning with dividing energy saving seasons of building environment, divides the ventilation seasons of cities, and consequently determines the ventilation period. Outdoor air design conditions for ventilation should be determined according to the maximum value of outdoor air dry-bulb temperature within the period of the ventilation season.