When the bedroom window is open, the humidity will be 30. When the window is closed, the humidity will soar by 80?

The indoor temperature is not absolutely dry, which of course includes the water vapor exhaled by people. Moreover, due to sealing, ventilation is poor. On the other hand, it may be the decrease of light. In addition, there is the principle of water droplets on the glass in winter. The temperature difference between indoor and outdoor is large, and the air produces water mist near the window. With the flow of air, the indoor humidity gradually increases. Finally, we must pay attention to ventilation.

Too high or too low air humidity will affect our health. The comfortable humidity of human body is: the relative humidity is lower than 70%.

In 2003, the World Health Organization (WHO) defined "healthy residence", which refers to the residence that can make the occupants completely in good physical, psychological and social conditions. At the same time, the 15 standard of "healthy housing" is put forward. Article 6 stipulates that the indoor humidity should be kept between 40% and 70% throughout the year. If the humidity is lower or higher than this value, it is a hidden danger to human health and easy to create living conditions for various bacteria.

Too high or too low humidity is harmful to health;

When the indoor humidity is too high, such as the rainy season, people will feel sultry and listless. At the same time, it will affect people's body temperature regulation function, causing symptoms such as temperature rise, vasodilation, rapid pulse and even dizziness due to poor heat dissipation. Working and living in a place with high humidity for a long time, people are prone to rheumatic and rheumatoid arthritis.