Harm of ventilation in small gaps in windows

The harm caused by this degree of window opening is as follows:

1, the window is slit, which can't achieve the effect of ventilation, and when the outdoor wind is strong, the airflow at the slit will be enhanced, which will produce a whistling sound and disturb people's rest.

2. Easy to be polluted by foreign objects: Windows with small gaps allow outside air to enter the room, but also allow dust, bacteria, pollen, insects and other substances to enter the room with the air, which is easy to pollute the indoor air and cause diseases.

3. Temperature instability: Windows with small gaps are not adequately ventilated, which not only cannot adjust the indoor temperature, but also makes the indoor temperature unstable and makes the room temperature change frequently.