Do you know what a new wind is? Over the years, with the decrease of air index, how to "breathe in" has become a topic of admiration. In fact, if a set of "fresh air system" is configured, the indoor air quality can be improved! Moreover, fresh air system has been widely used abroad, and many large and medium-sized engineering buildings in China have extended the technical nature of fresh air, and fresh air has long been known as one of the effective solutions to improve indoor air quality.
1. What is the fresh air system?
"New wind" is still a strange definition for many people. What is new wind?
In short, the fresh air system is an open cycle, which is composed of inlet centrifugal fan, centrifugal fan, exhaust pipe and various pipelines. The air supply system is connected with a series of exhaust system ports according to the pipeline. After it is opened, negative pressure will be generated in the room. At this time, the negative pressure indoor air quality will be discharged outward through the centrifugal fan and exhaust system, and the outdoor gas will also enter the room through the air inlet of the fresh air system. According to that "one in and one out", the indoor air quality obtains the circulation of goods, and has the function of discharging depression and filling fresh air, which is the "fresh air system".
What are the types of fresh air systems?
Natural ventilation is divided into three categories:
1. Single side flow intermediate fresh air system
2. Double flow intermediate fresh air system
3. Intermediate fresh air system of total heat exchanger
What kind of fresh air is good?
·Unidirectional central fresh air system: mandatory exhaust system, of course, air supply. If special fresh air filter equipment is not configured, outdoor gas will directly enter the room with bacteria and floating dust. Therefore, the effect of unilateral fresh air is basically the same as that of indoor ventilation.
·Two way flow central fresh air system: mandatory exhaust system and mandatory air supply. The difference between it and unilateral flow fresh air depends on the actual ventilation effect, that is, the double flow fresh wind energy will filter the gas entering the room to ensure the cleanness of indoor air quality.
·Full heat exchange central fresh air system: the full direct expansion control module is promoted in the fresh air server, which can solve the environmental humidity and temperature of the gas before the outdoor fresh air enters the room. For example, in winter, prevent the low-temperature gas from entering the room immediately according to the system software. In simple terms, The intermediate fresh air system of total heat exchanger is a more intelligent choice, which can ensure the indoor air quality and improve the comfort.
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