Scientific research shows that the air relative humidity that is most beneficial to human health is 49%-5 1%. The hot and humid summer has arrived, and the warm and humid airflow is active. The relative humidity of air in most parts of China is generally above 60%, while it is as high as 80% in the south, which is very unfavorable to human health. Therefore, while preventing heatstroke and cooling in summer, we should also pay attention to adjusting indoor relative humidity.
Meaningful use
Air humidity plays an important role in many aspects, mainly in theory in meteorology, climatology and meteorology, but it has little effect in practical application.
aerography
When it rains, the air is very humid. In meteorology and hydrology, humidity is an important data to determine evaporation and transpiration. It plays a decisive role in the formation of different climatic zones. Water vapor in the atmosphere is also essential in the water cycle. Water can move quickly on the surface of the earth through steam. Water forms precipitation, clouds and other phenomena in the atmosphere, which determine the weather and climate of the earth.
Relative humidity is commonly used in weather forecast. Reflects the possibility of rain and fog. In hot weather, high relative humidity will make people (and other animals) feel hotter because it hinders the evaporation of sweat. Humans can therefore calculate the heat index.
Medical science
In medicine, the relationship between air humidity and breathing is very close. Under certain humidity, oxygen can easily enter the blood through alveoli. The average person feels most comfortable at 45-55% relative humidity. The relative humidity of overheated and unventilated rooms is generally low, which may be harmful to the skin and irritating to the mucosa.