How to choose a fresh air system?

Date of issue:2020-02-14 00:00 Source:http://www.cbsgu.cn Click:

How to choose a fresh air system? The following air-conditioning maintenance company will teach you:

01Selection

The fresh air system is divided into ducted, wall-mounted, and vertical cabinet types. The ducted fresh air system needs to be piped through the wall. The host and pipes must be installed in the ceiling in a concealed manner, which needs to be carried out simultaneously with the renovation, which is more suitable for new renovations and renovations. Houses; wall-mounted and cabinet-type fresh air systems are relatively more convenient to install. They only need to punch holes in a suitable position on the wall or window, which is more suitable for families after renovation.

02 air volume

Fresh air calculation method: actual use area * floor height (2.8 meters-3 meters) * necessary air changes in the room (0.7-1 times) = necessary air changes. Then select the appropriate fresh air host based on the calculated results.

The larger the air volume, the faster the air change, and the faster the air change, the fresher the indoor air. Therefore, it is recommended to choose a fresh air system with sufficient air volume and capable of meeting indoor air quality standards according to the size of the indoor space. For example, users with an indoor area of 80 square meters are recommended to purchase a fresh air purification system with an air volume of not less than 300 cubic meters per hour.

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03Filter effect

A filter that meets the HEPA standard has a filtration efficiency of 99.9% for 0.3 micron. The higher the filter level, the stronger the filtering effect. However, the HEPA filter has insufficient dust holding capacity and limited service life. It is recommended to choose a rich filter combination. A fresh air purification system with a HEPA rating higher than H12 is better. The use of a medium-efficiency filter or a primary-efficiency filter can resist some large particles.

04Noise

Generally speaking, the noise of the fresh air purification system is proportional to the air volume. The larger the air volume, the greater the noise. Therefore, when purchasing fresh air, we need to find a balance between air volume and noise. When purchasing a fresh air system, it is recommended to have greater noise Do not exceed 45 decibels, otherwise it will affect daily life and rest.

05 heat exchange

In order to solve the problem of human body injury and energy loss caused by the indoor temperature difference caused by air replacement, which Shanghai Decoration Company tells you can use the energy recovery heat exchanger to recover the energy in the exhaust gas from the room, and heat or cool the air introduced to the outside , Balance the indoor temperature difference, ensure a comfortable temperature environment, and reduce energy loss caused by air replacement.