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What are the characteristics and functions of the fresh air system
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Time：2020-05-14 20:39:46
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To improve indoor air quality, the fresh air system is indispensable. The fresh air system is not just to adsorb pollutants in the air, it is more like an indoor ventilation system. Simply put, it is an advanced version of the ventilation fan. It can connect the indoor and outdoor to form an open air circulation system, equipped with a multi-layer filtration system that allows people to breathe fresh, clean, and high-quality air indoors. The so-called fresh air is fresh air. In short, the fresh air system is to send outdoor fresh gas through filtration, purification, oxygenation, temperature adjustment and other treatments to the indoor through the pipeline, and at the same time discharge the indoor dirty air to the outdoor Replacement to ensure a healthy living environment for indoor personnel. The fresh air system originates from Europe and is a set of independent air treatment system composed of air supply system and exhaust system. It is divided into two types: ducted fresh air system and ductless fresh air system. The outdoor air is purified by a new fan and introduced into the room, while the indoor polluted air is eliminated. Compared with traditional air purifiers, the fresh air system
一、Oxygen balance, remove excess carbon dioxide in the room
We usually suffer from sleepiness or lack of energy in a crowded and small space. They are all related to the increase of indoor carbon dioxide content and low oxygen content. The concentration of carbon dioxide will affect the breathing and health of people. Generally speaking, the outdoor carbon monoxide sensor
Therefore, a fresh air system is installed at home, which can balance the indoor oxygen and keep the room fresh and clean.
二、purification decoration pollution
The pollution problem of new home decoration has been proved to be widespread. After the new decoration, the formaldehyde / tVOC content in the room generally exceeds the standard, and the highest one can exceed one hundred times. Formaldehyde is a toxic body and has a strong stimulating effect on your skin. The World Health Organization has identified formaldehyde as a carcinogen. tVOC is the abbreviation of total volatile organic compounds. It contains thousands of compounds, which may have an odor and irritation, and some compounds may be toxic. It is a relatively serious air pollutant, which is very harmful to the body. TVOC can cause imbalance of the body's immune level, affect the central nervous system function, and appear dizzy, headache, drowsiness, weakness, chest tightness and other conscious symptoms; it may also affect the digestive system, appear to have anorexia, nausea, etc., and can damage the liver and hematopoietic system in severe cases Allergies appear. The national standard for indoor tVOC concentration is ≤0.6 mg / m³, the more ideal tVOC concentration is 0.16 mg / m³-0.3 mg / m³, and the national standard for indoor formaldehyde content is ≤0.1 mg / m³
三、Dustproof
Fine particles (PM2.5) and non-absorbable particles (PM10) are more likely to adsorb toxic substances. For example, genus genus (major genus element in the city, the most prominent are Zn, Pb, As, Cd, etc., and different regions also have their own characteristics), toxic micro-organisms, etc. Due to its smaller size, PM2.5 has a stronger penetration, may reach the thin tube wall, and disturb the exchange of air within the lungs. Smaller particles (diameter less than 100 nanometers) can pass through the lungs and affect other organs. PM2.5 can cause arterial plaque deposition, leading to tube inflammation and atherosclerosis, which can eventually lead to visceral diseases or other tube problems. World Health Organization (World Health Organization) in the 2005 edition of "Air Quality Guidelines" pointed out that PM2.5 annual average concentration safety value of 10μg / m³. When the concentration of PM2.5 in the air is higher than 10μg / m³, it will increase the risk of death. For every 10 μg / m³ increase in concentration, the total risk of death increases by 4%, the risk of death from lung disease increases by 6%, and the risk of death from lung cancer increases by 8%. Avoid opening windows to bring a lot of dust, effectively filter outdoor air, and ensure that the air entering the room is clean.
