Is it necessary to install fresh air system in the new house?

People's pursuit of quality of life is getting higher and higher. In recent years, there is a very popular household product, which is the fresh air system. However, because the fresh air system is a new household product, many people don't know much about it. They think that the fresh air system is just a gimmick, and its function is equivalent to an exhaust fan or an ordinary air purifier. They don't think it necessary to install it. What is the fresh air system? Is it necessary to pretend? How to buy? Today I will talk about these topics in detail. What is a fresh air system? The earliest prototype of the fresh air system is actually a ventilator, which was invented to pump away the turbid air in the room and help the indoor ventilation when the doors and windows are closed. Later, after the upgrade, pipes were added, which could not only pump away the turbid indoor air, but also send the outside air indoors; Later, a variety of purification and filtration functions were added to filter and purify the air pollutants sent in from the outside, making the air fresher, which is also the main function of the fresh air system. The fresh air system can be divided into four types: central fresh air, wall-mounted fresh air and cabinet fresh air, and can be divided into suspended ceiling, wall-mounted fresh air and cabinet fresh air according to installation methods. Ceiling fresh air system is the most common, also called "whole house fresh air" and "central fresh air". It needs to be installed in the ceiling, which is expensive. There is only one main engine, which pumps out the air in each room through pipes, and then filters and purifies the outdoor air and sends it to each room. The wall-mounted fresh air system can't be compared with the whole house fresh air, but it doesn't need pipes or hanging on the ceiling, which is cheaper and more convenient to install. It only needs to open a ventilation hole to complete the local ventilation in the room. The cabinet fresh air system is similar to the vertical air conditioner, with only the air supply pipe of the whole house and no air return pipe, and also needs a ceiling. The whole house circulation effect is relatively poor, and the only advantage is that the later maintenance is more convenient. Generally speaking, cabinet fresh air is mostly used in commercial places, but less used in families. Is it necessary to install a fresh air system? Anyway, since the fresh air system can purify the air and promote the air circulation in the whole house, is it necessary to install it? Many people think it is not necessary to install fresh air system, because air purifier can also purify indoor air, and you can breathe fresh air when you open the window at ordinary times. However, everyone should understand that the air purifier can only breathe indoors, and no matter how it is purified, it is always indoor air. In addition, if you encounter foggy weather or the air quality in your area is poor, is there really fresh air when you open the window? So the existence of fresh air is actually to improve our quality of life and protect our health, such as diluting formaldehyde in the air, filtering PM2.5 and dust, and eliminating viruses and bacteria in the air. It is necessary to install a fresh air system if you want to make the air fresh at home. Of course, new styles are not necessary, after all, it depends on the actual situation of the individual. How to choose fresh air system? In the purchase of fresh air system, we must first clearly choose which one: the central fresh air system is expensive and limited, which is more suitable for large-sized families that have not been renovated; The wall-mounted fresh air system has fewer installation restrictions and is more suitable for ordinary families that have been decorated at home. In fact, the core of fresh air system lies in three aspects: fan, pipeline and filter material, so we only need to pay attention to these aspects when purchasing: noise, air volume, filtration mode, pipeline material, heat exchange and brand. First, the noise fresh air system will produce certain noise when working, and the noise value mainly affects our experience. When buying, of course, the lower the noise value, the better. Generally speaking, the noise of the strongest silent fresh air system should be controlled below 40dB. Second, the air volume of the fresh air system, the unit is cubic meters per hour, which means how much air the fresh air system can deliver to the room per hour. In principle, the greater the air volume, the better the air supply effect and the more fresh indoor air, but the greater the air volume also means the greater the noise. Therefore, we should choose an appropriate value in the selection of fresh air system air volume, air volume = floor height * indoor area. Common fresh air systems include 150m /h, 250m /h, 300m /h and 350m /h, etc. Generally speaking, for a house of about 50㎡, 150 air volume is enough, and 250 air volume can meet the needs of a house within 100㎡, that is, more than 6543; . Third, the filtration method As mentioned above, in addition to ventilation, the fresh air system can effectively filter impurities and pollutants in the outdoor air and deliver fresh and clean air for us, thanks to the filtration technology (filter screen) of the fresh air system. The filtration of fresh air system is mainly divided into pure physical filtration and electrostatic adsorption. Pure physical filtration refers to the use of filter elements, and electrostatic adsorption refers to the use of static electricity generated by electrostatic boxes to collect dust. These two filtering methods have their own advantages and disadvantages. Physical filtration needs to replace the filter element, which is more expensive to use. Static electricity does not need to replace the filter element, but only needs to be taken down for cleaning, but it will release ozone. Of course, the best filtration method is a mixture of the two, and the effect is better by double filtration. Fourth, the pipes of the central fresh air system mainly include PVC hard pipes and pe hoses. PVC hard pipe is cheaper, but the air volume attenuation is relatively large, and pe hose has less air volume attenuation and noise, but it is more expensive and has more holes. If the pursuit of cost performance, the house is not particularly large, there are not many rooms, PVC hard pipe can be considered. If the fresh air system has certain quality requirements and the budget is sufficient, PE hose is better. 5. Heat exchange For the domestic fresh air system on the market, the heat exchange rate can reach more than 80%. The higher the heat exchange rate, the less the heat loss in winter and the less cold the blown air. In summer, the air blown in can be prevented from being too hot, thus reducing the pressure of air conditioning and achieving the effect of energy saving. The heat exchange modes of fresh air system are mainly divided into sensible heat exchange (heat recovery) and total heat exchange (energy recovery). Total heat exchange can not only adjust the fresh air temperature, but also reduce humidity, so it is more suitable for the southern region, while in the northern region, sensible heat exchange is enough. Six, brand fresh air system brands are divided into imported brands and domestic brands. Now there are only a few well-known brands on the market: imported brands: Panasonic of Japan, Honeywell of the United States, Lancer of France, Daikin of Japan, Braun of the United States; Domestic brands: Yuanda, Brown and Du Ya. Brand concern These brands are well-known brands of fresh air system. The fan, motor and technology used are all good, so there won't be much problem in choosing. But after all, there are many products under each brand, with different types, different parameters and different performance prices. Therefore, when we buy, the brand is only the foundation, and the above aspects need attention. Together they determine the quality of the fresh air system and our experience. For fresh air system decoration and other aspects of decoration, what you don't understand, click on Bian Xiao's head, online customer service professional answer.