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Necessity of installing fresh air system for central air conditioning-Code for design of fresh air system for central air conditioning
Release time:
2011/10/17
Central air conditioning is mainly used for cooling and heating, the central fresh air system is mainly used for indoor ventilation, and now many central air conditioning with fresh air system, but this is not the strict sense of "fresh air", at best can only be called "wind".
Central air conditioning and fresh air system are two different concepts. They belong to two different comfortable home systems. Central air conditioning is mainly used for cooling and heating. Central fresh air system is mainly used for indoor ventilation. Now many central air conditioners have fresh air system, but this is not strictly speaking“Fresh air”, at best, can only be called“Wind”.
Why should the central air conditioning install fresh air system
With the continuous improvement of living standards, the rapid growth of new buildings, people's requirements for indoor life experience and indoor comfort and air quality are getting higher and higher. Experts point out that the indoor environment must be conducive to health, which promotes the prosperity of household central air-conditioning and fresh air system. Household central air-conditioning is also constantly meeting people's growing material needs in frequency conversion innovation.
The household central air conditioner is mainly divided into two parts, the beginning is the central air conditioner host, and the end is the indoor unit. The indoor unit is equivalent to a fresh air system, but in fact it does not have the function of the fresh air system. It can only be said that it is an advanced fan. In order to achieve the effect of fresh air ventilation, a central fresh air system must be installed, which can improve the air quality in the room, keep the room fresh and comfortable, It is good for health.
Code for design of central air conditioning fresh air system
Many people think that the larger the fresh air system, the more comfortable it will be. In fact, this is not the case. It is understandable that fresh air can greatly improve indoor air quality, but it is not that the greater the fresh air volume, the better the effect of air conditioning. Experts believe that good air quality requires not only clean air, but also pleasant temperature and humidity. Although the central air conditioning system improves the air freshness, it also increases the cooling and heating load of the air conditioner, which not only affects the air conditioning effect, but also greatly increases the power consumption. So how to design the fresh air system is reasonable, let's look at the central air conditioning fresh air system design specification.
China's large central air conditioning system for the value of the following provisions: first of all, according to the amount of fresh air per person30m3/hCalculation, and then according to the different building use of the provisions of the number of ventilation accounting ventilation, after the two take its large, as the final fresh air volume, the household central air conditioning fresh air volume, in developed countries have special provisions.
Experts pointed out that the fresh air volume of the central air conditioning system should be no less20m3/（hw), when designing the central air-conditioning fresh air system, there are three factors that determine the size of the fresh air:
（1) The residential environment and geographical conditions in which the installation family is located. If the environment is comfortable and clean, ventilation is good, can reduce the amount of fresh air design;
（2) Floor high and low. Since reducing the concentration of pollutants is the main purpose of installing a fresh air system, such as installing a higher floor of the home, especially in10Above the floor, the air is relatively clean, which can reduce the design of fresh air volume;
（3) Special requirements of customers. Some customers have their own unique habits, such as like smoking and so on.
At present, most central air-conditioning installations are equipped with fresh air systems. The fresh air system itself is not very expensive. Coupled with the magical function of the fresh air system to spit out the old and turn waste into treasure, many home users will choose to install the central air-conditioning fresh air system. The popular fresh air brands are Panasonic and Honeywell fresh air systems. Panasonic mute fresh air is worth recommending, saving energy and electricity, and adding comfort and peace to life.
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