Why do you need a humidifier?
Humidification and dehumidification
Humidity is determined by the amount of water vapor contained in the air. Moreover, the humidity can be adjusted by increasing or decreasing the amount of water vapor. Among them, the operation of increasing the amount of water vapor is referred to as "humidification", and the operation of reducing the amount of water vapor is referred to as "dehumidification". In the air conditioner, the "humidification" or "dehumidification" operation is performed according to the purpose and conditions of use, and the humidity is controlled within a certain range. (The following, when it comes to humidity alone, it means relative humidity.)
Heating and humidification
When the amount of water vapor in the air is constant, the humidity is lowered when the air temperature is raised. This is the same as indoor heating, especially when fresh air is ingested, if it is not humidified, the indoor humidity will be too low. For example, a significant drop in indoor humidity. For example: indoor temperature and humidity is 10 °C 50%RH, fresh air temperature and humidity air condition is 0 °C 30% RH, intake of 20% fresh air, if the temperature rises to 20 °C, the indoor humidity will be reduced to 20% RH. Problems caused by insufficient humidity. Dry air caused by insufficient humidity not only detracts from human health and comfort, but also reduces production efficiency and causes product failure, resulting in various adverse effects, which can be basically divided into the following three types: Detrimental to health and comfort; 2. Hazards from evaporation and loss of water; 3. Static electricity can cause machine failure and reduce product quality.
Health and comfort
In terms of health, air drying can damage the mucous membranes of the respiratory system, and viruses such as colds can easily invade the human body. In terms of comfort, when the air is dry, the amount of water evaporation in the body increases. Therefore, even when heating, the body temperature feels low. If the humidity is appropriate, even if the room temperature is 200C, it will feel as warm as 250C. In this way, the set temperature of the heating can be lowered, which is conducive to saving energy. The effect of humidity on the beauty of the hair and skin. Healthy hair has a moisture content of about 11 to 13%. Hair has been used as a hygrometer because of the large difference in its absorption and desorption. When dry, the hair is sloppy, tarnished, and beautiful. When the moisture content of the skin drops below 10%, it is dry skin, which is easy to wrinkle and itching.
Evaporation and loss of moisture
Hygroscopic materials such as paper and fiber, when air is dried, the moisture is taken away, and the characteristics of the product are also changed. Accordingly, quality management has caused problems such as food such as green vegetables and fruits. When the air is dry, the moisture is taken away and the quality is lowered. Once the water is lost, it is impossible to restore the original value of the product.
Freshness and deterioration
It is reported that the water content of vegetables is about 90%. If you lose 5% of water, you will lose the value of the goods. Vegetables must be kept fresh at low temperatures and high humidity. As a hygroscopic material, paper is stretched by moisture absorption and release, and if it is repeatedly stretched and stretched, water is lost at the edge of the paper, and curling occurs. The amount of moisture released by the hygroscopic material into the air is determined by the degree of dryness of the air and the rate of moisture release of the material. Fine arts, enamel paintings, wood products, etc. are chapped, deformed, and aged due to loss of moisture.
Static electricity
Static electricity is generated by friction, and air drying is easy to charge, causing an annoying electric shock. In addition, static electricity causes downtime of the production machine, which reduces production efficiency and can cause malfunction of the computer. When the humidity is maintained at about 60% RH, the electrical resistivity of the charged body is lowered, and an electrostatic charge is released to suppress the generation of static electricity. Static electricity is the cause of paper jams in printing machinery and copiers. In addition, static electricity is the cause of powder adhesion in pharmaceutical factories, fiber winding in textiles and garment factories. In the computer room, when the humidity is insufficient, troubles may occur, and dust may adhere.
2. The necessity of humidification?
Undoubtedly, temperature can directly affect people's feelings about the living environment. Similarly, humidity can also affect people's lives and health. Science has proven that air humidity is closely related to human health and daily life. Medical research shows that under normal circumstances, the room humidity reaches 45 ~ 65% RH, the temperature is 20 ~ 25 ° C, the human body, thinking are in the best state, regardless of work, rest can receive the desired results. Low humidity in the air (that is, too dry air) will cause dust to fly. Not only does it make people feel dry, the skin is tight, the body heats up, the body's metabolism is reduced, and it causes epidemics such as influenza and bronchitis. In addition, dry air can cause deformation of furniture, cracking of walls, and the like.
According to meteorological data, in the whole heating period in the northern region, in the case of not using any humidifier, only 2.5 days, the indoor humidity is 45-65% RH, and the indoor average humidity for most of the other time only It is 15% RH. Therefore, the Ministry of Construction specified in the 2002 air conditioning design code.
1. The relative humidity of the new office building should be designed to be greater than 40% RH.
2. The relative humidity of hotels and three-star hotels should be greater than 45% RH.
