Is it necessary to turn on the air purifier in summer without smog?
Introduction
After a winter, I got rid of the misty "fairyland" and finally stumbled to the summer with the best air all year round. I threw away the mask and turned off the purifier. I want to enjoy my life? ! Don't be silly, I exist to take you through the truth and back to reality.
Many people say that summer is just a little fairy in the street,
beautiful long legs and handsome little brother ...
It's too superficial, but I like it
Some people say that eating iced watermelons with air conditioning
is too foodie, but think about me too!
But many people ignore an invisible killer, that is formaldehyde.
According to the research data table of the World Health Organization, the number of deaths caused by indoor environmental pollution in the world has reached 2.8 million every year! According to relevant statistics made by the national indoor air testing Department, more than 9% of the newly renovated rooms have seriously exceeded the standard of harmful gases. The number of deaths caused by indoor formaldehyde in China is as high as 1, every year.
At the same time, according to the investigation of relevant medical experts in recent years, it is found that 68% of pregnant women's fetal malformations are caused by serious formaldehyde exceeding the standard in their rooms, and 9% of leukemia children in their new homes have a history of home decoration within two years.
how about it? It's not unexpected, but it's not terrible.
you also said that you don't need to turn on the purifier in summer?
ignorant human!
Our current home improvement materials, such as plywood, particleboard, man-made board, chemical fiber carpet, foam plastic, paint and coating, all contain formaldehyde! ! ! !
When the indoor temperature rises by 1℃
the concentration of formaldehyde in the air will increase by .15-.37 times
Under the stimulation of high temperature, the release of formaldehyde is 2%-3% higher than usual.
Many people are eager to be cool.
The standard actions when entering the door are to close the window, undress and turn on the air conditioner in one go.
Even more, formaldehyde is released in one go.
But some people say it's just formaldehyde.
Is it true that the method of online in addition to formaldehyde can get a lot of money
?
first, open the window to ventilate the symptoms but not the root cause
The most common method is to open the doors and windows to ventilate. Many people will choose to open the windows of their new homes and ventilate them for several months to six months after the renovation, so as to achieve the purpose of in addition to formaldehyde. We don't deny that this will really play a role, but it will not cure the symptoms. Formaldehyde can be divided into three States: free state, adsorbed state and combined state. According to a report of China Daily in 216, only free formaldehyde can be eliminated by ventilation, and it can only be eliminated when the normal wind speed is more than 4 times. The research of Yokohama National University in Japan shows that the release period of formaldehyde is generally 3-15 years, and indoor formaldehyde cannot be completely removed by ventilation after decoration. In later life, formaldehyde in wooden furniture and radioactive radon in ceramic tiles will still volatilize.
Second, the green pomelo peels in bamboo charcoal package are all floating clouds
There are also many people on the Internet who recommend bamboo charcoal package, formaldehyde scavenger, aged vinegar, plants and fruit peels to adsorb formaldehyde. Zhejiang University Ice Insect Laboratory conducted a special experiment on this. They selected five objects, namely bamboo charcoal package, formaldehyde scavenger, aged vinegar, plants and fruit peels, as well as a room that has been decorated for three months as the experimental room.
The experimental results show that the initial concentration of formaldehyde is .196mg/m by sealing a room of 1㎡? , than .1mg/m? The national standard is nearly twice as high. Three days later, it was found that bamboo charcoal was used to remove formaldehyde, and the formaldehyde concentration in the air was .19mg/m? The detection data of aged vinegar is .198mg/m3, that of fruit peel is .21mg/m3, and that of formaldehyde scavenger and plant is .196mg/m? .
in other words, these five measures have little effect on eliminating formaldehyde pollution. Take the most typical plant as an example, its breathing capacity is quite limited, usually at the microgram (one millionth of a gram) level, which is almost negligible.
Third, the logical paradox that environmentally friendly building materials are not environmentally friendly
Many people have long realized that the above method is not a long-term solution. For the sake of health, families with conditions try to adopt the "environmentally friendly building materials" advertised in the market. But in fact, environmentally friendly building materials only mean that harmful substances are released within the amount stipulated by the state, but it does not mean that harmful substances do not exist. More paradoxically, the national GB18584-21 "Limit of harmful substances in wood furniture for interior decoration materials" requires that the formaldehyde emission should be ≤1.5mg/L before reaching the standard. However, the defect of this standard is that the larger the volume of this material used in furniture, the more formaldehyde will be released. In other words, even if every piece of furniture and building materials meet the environmental protection standards, too much used in a house may also make the overall indoor pollution exceed the standard.
in addition to formaldehyde still needs professional equipment to be reliable
After learning a series of "unreliable" in addition to formaldehyde ways, it is estimated that everyone wants to ask, is this formaldehyde really incurable?
In fact, the most effective in addition to formaldehyde method recognized internationally at present is activated carbon. The industrial design of activated carbon makes it enter the domestic scene, and air purifier products with in addition to formaldehyde function emerge as the times require. The principle of air purifier in addition to formaldehyde is that on the basis of passive adsorption of activated carbon, through scientific air duct design, more professional air quality sensor and more intuitive air quality display mode, the air purifier not only realizes high-efficiency formaldehyde adsorption purification, but also helps users to intuitively understand the air quality of the current environment and make the air purification process truly "visible".
Tsinghua University and Xidian Neys A6 air purifier have done a professional and detailed experiment on the subject of "in addition to formaldehyde of air purifier". Although the purifier was in operation for a short time after closing the doors and windows, the TVOC concentration still rose rapidly, but it began to decline after 1 hour. After 2-5 hours, the TVOC release rate and the purification efficiency of the purifier basically reached a balance, with an average of .13mg/m? After 5 hours, TVOC dropped to .6mg/m? , lower than the concentration of TVOC (.9mg/m? ）。
experimental results: after the indoor TVOC concentration is reduced to the equilibrium value, the purifier can continue to maintain its purification ability and reduce TVOC to a lower level. When TVOC is released, opening the purifier will have a better purification effect.
So, apart from those messy and useless in addition to formaldehyde methods on Baidu, the air purifier is the most professional and effective at present, and it is also the gospel for friends who are greedy for the cool in summer. The combination of air purifier and air conditioner makes you enjoy the good air easily in the cool.
I don't know how many friends I can really understand after writing so much.
for those friends who don't like learning but want to learn knowledge,
I want to enlarge the trick in Xiaobian: draw the key points! !
The most effective combination of methods in in addition to formaldehyde in summer:
1 Ensure at least 2 hours of window ventilation every day
Although window ventilation is only a temporary solution, it is still a good air replacement method for the summer air conditioning party.
2 Use a professional air purifier
For example, Xidiannaisi, which was jointly tested with Tsinghua University, is a good choice. The professional H13 filter+high-efficiency organic activated carbon can effectively filter and adsorb PM2.5, formaldehyde, benzene and TVOC. At the same time, the intelligent mode of the machine can be adjusted at any time according to the air quality, and the running gear of the machine can protect everyone's respiratory health in real time.
3 air purifier+air conditioner has better purification effect
The volatilization of formaldehyde and TVOC is closely related to the temperature and humidity of the room. The higher the temperature and humidity, the higher the volatilization rate of TVOC, which is also an important reason why summer is the hardest hit area of formaldehyde. Air conditioner can reduce the volatilization rate of formaldehyde and TVOC by lowering the indoor temperature, but it cannot adsorb formaldehyde and TVOC. At this time, air purifier is needed to play a role.
Don't be naive to think that you only need to turn on the air purifier in the foggy season.
It is necessary to be cool and have good air in summer!