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Talk about the new wind

Read:6192017-10-10 17:17:36 

As people focus on air quality, in addition to air cleanliness, in recent years, people has higher requirement for the freshness of air, fog today, in addition to choose a suitable air purifier, more and more people begin to pay close attention to new air circulating system.

So what is the new wind? What is the relationship between the new wind and the air purifier? How to choose a suitable new wind system for the bedroom?

The new wind, as the name suggests, is the ventilation system that brings fresh air to the bedroom, which is a set of ventilation ventilation system composed of the new wind engine, ventilation ducts and controllers. Fresh air come from northern latitudes, considering the local climate, people are very emphasis on building energy efficiency and thus improve the building air tightness, but because of a shortage of indoor ventilation rate sparked a series called "sick building syndrome" health problems, thus caused the people to the attention of oxygen, air fresh air system is widely used.

According to statistics, more than 90 percent of new homes in major European countries are equipped with new air systems, and the penetration rate in U.S. buildings is more than 80 percent. The zsh-z-6b200, which regulates the design of heating ventilation and air regulation of civil buildings in China, also provides for the number of air ventilation and the smallest new air volume per hour for residential and public buildings.

Some people say, indoor ventilation rate is insufficient, open window ventilation is ok, or install an exhaust fan to be ok, why still install a set of new wind system? First of all, in many areas of China's smoggy areas, the ventilation or opening of the exhaust fan can not only improve the air quality in the bedroom, but also introduce more smog and aggravate indoor particle pollution. Secondly, it is possible to introduce unacceptable noise pollution by ventilating buildings or Windows at night. In addition, from the Angle of building energy conservation, in winter, summer or high wet area open window ventilates, can cause the additional burden of air conditioning or dehumidification system in the bedroom, the electricity cost will rise accordingly. Fresh air system, by contrast, can not open the window can also be ventilated, without any increase in the premise of excessive energy consumption and noise, can increase the oxygen content of air in the bedroom, at the same time establish a micro positive pressure inside the bedroom, discharge indoor dirty air, also can assist the discharge indoor formaldehyde included some of the gaseous pollutants (especially new decoration of the bedroom).

Air purifiers focus on the problem of indoor particulate matter and gaseous pollutants. In contrast, the new wind system is the focus to solve the problem of excessive concentration of carbon dioxide in indoor carbon dioxide and the shortage of oxygen content. Fresh air system, therefore, generally don't use the standard such as air purifier CADR in common use and CCM to test, but focus on purification efficiency filters, air and noise index (uniflow new air circulating system, for example).

First of all, the fresh air filter purification efficiency of the host generally lower than the air purifier, early fresh air system only at the beginning of two stage filter, filter and the outdoors under the condition of PM2.5 concentrations exceeded, if open so that fresh air system, will continue to indoor introduce unclean air. Therefore, if you want to through the fresh air system can solve the problem of air cleanliness, at the same time can generally be contains a much higher efficiency by increasing the HEPA filter front box to realize, of course, the price is to bring part of the air volume loss.

Secondly, the air volume selection of the new air host depends mainly on the number of indoor personnel and the indoor area. , for example, covers an area of 90 square meters, the bedroom of the height 2.7 meters, according to the per capita after 30 m/h standard of ventilation, there were 5 people assume that the bedroom, the need of air volume is 150 m after an hour, 1 air change per hour estimation, need air volume is 243 m after, under the condition of considering the pressure loss of the existing in the actual use, appropriate spare some air volume, in the real use of fresh air in the system can be more flexible to adjust air flow (for example, can open low airflow stall at night, can be in guarantee under the condition of air change rate, running noise control at the lowest level).

Finally, it is also the key indicator of the new wind system, which is the noise of the new wind engine. Due to household air host generally adopt the indoor ceiling or wall hanging installation, therefore, its runtime tend to limit the noise level we choose larger airflow (of course also bigger noise) host, also influence the way lay fresh air pipes and pipe of parameter selection. In order to reduce noise, it is generally used to reduce the Angle of the pipe corner and the use of sound insulation cotton and muffle box by selecting the larger diameter ventilation ducts. In the sleep mode, if the noise of the outlet can be controlled between 30-40dB (A), it will be an ideal choice.

To choose a suitable fresh air system for the bedroom, it is best to ask professional manufacturers according to the actual condition of the bedroom and in different parts of the climate characteristic, after the real can be in site design, equipment selection and installation of equipment. With the HEPA air filter is similar to the later period maintenance activated carbon filter, in the process of the use of fresh air system, also involves the filter maintenance and replacement, can compare the different manufacturers filter before the choose and buy the costs and replacement cycle. In order to more convenient when will prompt the user to replace filter, some fresh air system has been integrated intelligent filter life monitoring system, supplemented by a smartphone app can also be further realize the humanized function such as remote air quality monitoring and remote control.


As people focus on air quality, in addition to air cleanliness, in recent years, people has higher requirement for the freshness of air, fog today, in addition to choose a suitable air purifier, more and more people begin to pay close attention to new air circulating system. 
So what is the new wind? What is the relationship between the new wind and the air purifier? How to choose a suitable new wind system for the bedroom? 
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