Highlights

•    Results and discussion were based on the method of on-site measurement and long-term online monitoring.
•    Based on the test data, the seasonal characteristics of indoor air quality were discussed.
•    The current situation of fresh air system and its function on reducing indoor pollution in residential buildings in northeast China were discovered.
•    The ventilation mode suitable for mechanically ventilated residential buildings in northeast China was determined.

PictorialEvidence [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], from Wikimedia Commons

Read more…