Indoor environment and solve the problem of ventilation – indoor environment, ve
Many buildings today, to meet people's needs, generally installed using Central air conditioning . Air conditioning is the greatest invention of mankind, for mankind to create a healthy and comfortable living and working environment. However, in the traditional central air conditioning and ventilation system, there is much to be desired. Adoption of new technologies and new products to address this problem is imperative.
Conventional ventilation for natural ventilation, mechanical ventilation in two ways. Few consider the problem of indoor air quality. Beijing TV channel, according to the economy early in the August 2005 report, the examination by the relevant authorities of Beijing 100% of the central air conditioning systems are there ventilation (air quality) failure phenomenon. This is the one raised a crucial question: how to address ventilation and central air conditioning system caused the problem?
Give a simple example. When you work in an office building with central air conditioning or office, the villa or apartment; as you when shopping in supermarkets; when you and your friends at the hotel, dinner, chatting; have not thought of (conscious ), as installed central air conditioning, all windows and doors must be closed, the indoor air quality has deteriorated to alarming figures. According to EPA statistics, due to poor ventilation, lack of fresh air and other reasons, indoor outdoor pollutant concentrations are generally 2-5 times, sometimes even up to several times more.
Concerned about outdoor air quality, is very important. In fact, people indoors more than 85% every day. Its time in the hot summer will be much longer. Person said: Indoor air pollution has become a threat to human health problems. Traditional supply air system commonly used method, air fan coil air conditioning system and local-wide air conditioning system. The new air conditioning system, air distribution to the air. The approach is first filtered and then cooled (summer), or other wet heating (winter). All air-conditioning system airflow to the air on the return air, its treatment for the new wind first filtered and then mixed with return air, and then by cooling (summer) or heated humidification (winter) into the room after. How can this air quality guarantee?
People food, clean drinking water because they do not is a choice. However, the air is not clean can not be chosen. Human life needs air, a minute will not breathe life-threatening. But few take into account the serious air pollution in the environment, hazardous to people's health, last long, would endanger the life, reduce the time limit for human survival. In 1993 the World Health Organization statistics show that 95% of the world's deaths and air pollution. Therefore, the issue of IAQ (indoor air quality) has become the subject of attention.
Indoor air pollution from the following:
(1) As the installation of central air conditioning, long-closed doors and windows, and ventilation, access to the indoor air (commonly known as fresh air) is inadequate and in order to reduce investment, often have not paid enough attention, causing the air not of the bacterial content of growth, breeding, resulting in poor ventilation, the phenomenon of feeling uncomfortable and serious.
(2) modern furniture materials such as synthetic board, Daxin Ban, beech, MDF all contain formaldehyde, the substance is recognized as a carcinogen by the World Health Organization. Oil Summer and summer glue, paint benzene.
(3) combustion products. Such as: cigarette smoke contains nicotine nicotine benzene more than 3000 kinds of chemical substances. Others include sulfur oxides, lead.
(4) carbon dioxide, harmful bacteria, the body's surface lipid gland excluded goods.
(5) modern office equipment. Electromagnetic waves, ozone.
(6) products of modern life. Such as cleaning agents, deodorants, will be released in varying degrees, formaldehyde substances.
(7) other … … Types of air pollution:
The impact of pollutant sources
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