What is the impact of air humidity on health?

In summer, when the indoor humidity is too high, it will inhibit the heat dissipation of the human body, making people feel very hot and irritable. In winter, when the indoor humidity is too high, it will make people feel cold, depressed, and prone to colds, and people live in an environment where the relative humidity is 45%-65% The most comfortable.

In 2003, the state issued an indoor air standard, and the relative humidity should be 40%-80% when cooling in summer; In winter, heating should be controlled at 30%-60%. The suitable indoor temperature for the elderly and children is 45%-50%; For patients with respiratory diseases such as asthma, the optimal indoor temperature is between 40% and 50%. It is difficult to feel the humidity, so it is recommended to have a hygrometer at home so that you can adjust the humidity in the room at any time.

The air humidity needs to rise, and the room needs to be closed for a while. If the space is too large, the humidification effect may be weakened.

In fact, the higher the humidity, the better, and it is necessary to pay attention to humidity control when using a humidifier. Low humidity makes people nervous and dry, which can easily cause respiratory diseases such as bronchitis, influenza, and rhinitis; Excessive humidity can also affect the moisture balance between the human body and the environment, making people feel suffocated.

The relative humidity of the air suitable for the human body in winter is 40 60. Neither too dry nor too wet. In addition, doors and windows should not be left closed for long periods of time when using a humidifier.

Because the high humidity in the room increases the activation of heating equipment, the warm, humid and dirty air is easy for bacteria to survive and multiply, which is not conducive to health.

A healthy humidity environment is 45% to 65%, and under such humidity conditions, the human body feels the most comfortable, and various germs are not easy to spread. Humidity above 65% will cause discomfort to the human respiratory system and mucous membranes, and reduce immunity.

If the indoor air is not circulated or the relative humidity is less than 35, and the indoor temperature exceeds 25, the human body begins to absorb heat from the outside world, and you will feel hot. If the temperature exceeds 35, then the body's sweat glands begin to activate, through a slight sweat to accumulate body temperature, the heartbeat accelerates, blood circulation accelerates, you will feel dizzy, general discomfort and fatigue, drowsiness, and the heat is unbearable.

On the contrary, when the temperature drops below 4, you will feel cold. When the room temperature is between 8 and 18, the human body will dissipate heat to the outside world, and the indoor breeze is blowing, and the indoor relative humidity is between 40 and 60, and you will feel comfortable and healthy. The effect of humidity on the human body is less noticeable in the comfortable temperature range of the room.

But when the relative humidity reaches 28 and the relative humidity reaches 90, you will have the feeling of temperature reaching 34.

This is because when the humidity is high, the water vapor content in the air is high, the amount of evaporation is low, and the large amount of sweat excreted by the human body is difficult to evaporate, and the heat in the body cannot be dissipated freely, so you will feel stuffy. Only from the relative humidity, the most suitable air relative humidity for the human body is 40 -50, because in this humidity range the bacteria in the air have the shortest lifespan, the human body will feel comfortable, even and normal breathing.

According to the statistics of meteorological experts, when the relative humidity reaches 30, the temperature of heat stroke is 38, when the relative humidity reaches 80 and the temperature is 31, people with weak physique sometimes cause heat stroke, if they encounter low temperature and high humidity in winter, people will feel damp and cold.

In the summer, if the air humidity is high, it will make people feel very stuffy, which will affect the discharge of water from the human body, and it is easy to cause problems such as heat stroke. In winter, the humidity of the air is very high, the temperature is low, and the water vapor in the atmosphere will absorb the heat of the human body, making people feel cold, and they are prone to colds, if the humidity reaches more than 80%, people may suffer from rheumatism, kidney disease and other problems.

The average person feels most comfortable at 45-55% relative humidity.

In addition to frequently turning on electrical appliances and letting them heat up and drive away moisture, electrical appliances should be energized in a standby state, and the power consumption of very small power can generate an appropriate amount of heat and keep the inside of the electrical appliances dry to achieve the role of moisture-proof protection.

1. According to the requirements of the national indoor air quality standards: the indoor air humidity standard in winter is 30% 60%, the humidity index is 50% 60% of the environment is the most comfortable, and the indoor temperature should not be higher than 24 degrees.

2. Air humidity refers to the degree of humidity of the air. General relative humidity indication. Relative humidity is the percentage value of the actual water vapor density of the air and the saturated water vapor density at the same temperature.

The best relative humidity for the human body to feel comfortable indoors is 49 51, and if the relative humidity is too low or too high, the human body will feel uncomfortable and even harmful to the human body.