Can the home fresh air system not be installed?

I want to answer questions from netizens, asking whether Xinfeng is installed or not and why it is used. All kinds of marketing information on the Internet are hype. Today, through a netizen's consultation, I sorted out the answers and sent them. An article helped you clear your mind.

I specialize in fresh air and clean water myself. Stakeholder.

On behalf of the business, will you recommend installation? Not necessarily. It often happens that the whole house can be filled with clean water or not. Considering the demand and budget, the central network soft water can not be installed. But I really recommend installing it in fresh air.

The big filter bottle of fresh air system, the central prefilter and the water purification system are two items that I gave to all my friends in the decoration stage. Be sure to pretend. Let's analyze the new wind.

Consider whether to install fresh air, and be sure to know what it is for. The system is a large-scale fan equipment with multiple pipes. Filter the outdoor air and send it home. Take the dirty air out of the house.

It has three practical functions:

One: increase the oxygen content in the air.

Two: control indoor air pollution such as formaldehyde.

Three: anti-smog, remove PM2.5

Action 1: increase the oxygen content in the air and reduce the carbon dioxide concentration. Core role.

Fresh air is imported from developed countries. These countries have experienced the industrialization era, and the value of PM2.5 is low. As shown in the figure, Europe and North America in the blue region are developing intelligent low-energy buildings, and the building standards specify in detail the energy efficiency of heating, refrigeration, ventilation, domestic hot water and lighting for new buildings. Providing enough fresh air to increase oxygen content has become the core function of fresh air ventilation equipment. So you can ask the service provider to import fresh air hosts, all of which have no efficient filter elements. In foreign countries, coarse filtration is enough.

The above picture shows the numerical concentration of air PM2.5 in major countries in the world in 20 18.

The above picture shows the value of PM2.5 in the capitals of major countries in the world in 20 18.

Back in China, two or even three layers of insulating glass have been widely used in new buildings to increase sealing, keep warm and reduce noise. When sleeping in the bedroom with the door closed and the window closed at night, the carbon dioxide concentration measured at night will increase to 1.5 to 4 times of the standard value.

The normal concentration in the bedroom is 500ppm, and the concentration will climb to more than 2000ppm in the early morning. It's like sleeping under the quilt for only a minute, like driving unconsciously and leaking a crack in the window, that is, the body is honest. You can search for "indoor carbon dioxide concentration standard" by yourself, which will be more detailed. Fresh air just keeps bringing in fresh air.

Function 2: reduce indoor air pollution, such as formaldehyde, benzene series, TVOC, etc. The most necessary and effective function.

Partners all know that formaldehyde is a strong carcinogen, which can cause a variety of malignant diseases. Very fierce.

But partners who know whether the renovated room is polluted by formaldehyde and TVOC. How long will it stay in the air? How long can formaldehyde be emitted? Is it safe to close the doors and windows after checking in?

So we bought tens of thousands of formaldehyde detection equipment, which is equivalent to and upgraded the domestic CMA qualified detection equipment. After two years of follow-up testing of several local reconstruction sites. It was found that more than 90% of the construction sites exceeded the standard of formaldehyde. It is more than twice that of a general construction site. Twenty percent of the construction sites exceeded the standard by three times. After living for two years, formaldehyde still exceeds the standard.

Let's compare how neighboring Japan handles decoration pollution. Look at the efforts made by the Japanese government and society.

When Japan was in the bubble economy, the indoor pollution problem was also very serious, but in our country, formaldehyde exceeded the standard. They have a technical term called bad building syndrome, which is called シックハス syndrome in Japanese, also called ward.

Definition:

The name of the poor health of the newly-built house, such as discomfort, dizziness, headache, eczema, sore throat, respiratory diseases, etc. In addition, new cars have similar symptoms, even (the smell of new cars)

It is the general name of various health problems in the family, and does not represent a disease. It is not the same concept as multiple chemical sensitivity [1]. Usually refers to poor health, mainly caused by indoor air quality problems. In that case, it is said that the air in the room is polluted for some reason, and the air is produced by people inhaling air.

First of all, the Japanese Ministry of Health, Labor and Welfare (similar to the Ministry of Health of China) 1997 set up the "Comfort and Health Family Review Committee" of the Secretariat to formulate guidelines for chemical substances. In June, the indoor formaldehyde concentration standard was released as an interim report. Establish legal standards, formulate relevant rules to rectify the market, and put forward requirements for housing decoration.

The building standards law of 2003 (including the ventilation law of building equipment) was revised.

* Classification of building materials according to formaldehyde emission to limit their use.

* mandatory installation of ventilation equipment

* ceiling building materials back restrictions and so on.

:: Restrictions on building materials

More than a decade ago, people were forced to come to the standard. After more than ten years, we are not familiar with this object. In Wei Yan, Shandong Province, we actually tested the fresh air after opening, and the indoor air safety level can be reached after opening for two hours. The circulation speed of indoor air is much higher than TVOC and formaldehyde.

Therefore, fresh air is one of the most effective methods to control indoor air pollution. It doesn't cost much to rent a house for six months to one year. After fresh air decoration, open fresh air and check in.

It's hard to imagine why you spend hundreds of millions to decorate your house, but not 10 thousand to 20 thousand to buy a safe fresh air system for your home. The reason is probably that people don't understand this system and think it's just for fog and haze removal. I have a high-end customer who told me that Xiao Zhao, I live halfway up the mountain, and the air is getting better and better in the natural oxygen bar. I said that because of this, good air needs to be brought in and polluted gas needs to be discharged.

Role 3: remove the most basic functions of PM2.5

Because of the national conditions of developing industrial and agricultural countries, most domestic brands and businesses are making a big fuss about smog prevention and PM2.5 prevention. Many brands are boasting that their PM2.5 removal rate is as high as 99%, which looks very good and high-end.

In fact, the fresh air main engine has passed through the primary, medium and high-efficiency filter element when supplementing outdoor fresh air indoors. You can match any filter level you want, it's as simple as that. Is it really meaningful that the filtration efficiency of 99% is higher than that of 95%? It's nothing but marketing rhetoric. It is an act of fooling customers' IQ to brag about what can be simply done with HEPA filter as a marketing selling point.

The effect of removing PM2.5 is obvious but very basic. As long as a fresh air main engine can do it, the premise is to open the filter frequently and replace it in time. Indoor air purifiers can also be used. Only the fresh air system is an external circulation supplemented by fresh air, and the air purifier has always been an internal circulation. Good indoor air is good for your health, and there is less floating dust at home. I won't go into details.

Let's take a look at what PM2.5 in the air looks like after being intercepted. Every three months, a filter can help you stop how much dust enters your lungs or falls on the TV on the coffee table.

To sum up: I don't know if fresh air can be installed. I know. Stop pretending. I have to admire your courage. In addition, fresh air does not refer to the host. The performance realization of all brand hosts should be based on reasonable design and installation technology.

Thank you for seeing this. I hope it helps you.

The content is provided by Shuguang _ Zhao Jiawei, a good user. For more questions, let's live in the APP and communicate directly with the host ~