Can't figure out the central air conditioning and fresh air system? Look at it at a speed

Central air conditioning and fresh air systems are systems dedicated to improving indoor comfort. In real life, many people take it for granted that air conditioners can also be used for air blowing. There is no need to match the fresh air system. In fact, central air conditioning and fresh air systems are completely different concepts. They solve different problems in the residential environment, one is to give people a warm and cold, and one to improve indoor air quality. There are differences and connections between the two.

First, what are the differences between the two?

1. Different functions

The basic function of the fresh air system is ventilation and ventilation, which discharges the turbid indoor air and introduces fresh Outdoor air to achieve indoor and outdoor air circulation. The powerful fresh air system also purifies the air, kills germs, and recovers from fresh air. The function of the central air conditioner is to cool or heat the air, and to adjust and control the indoor air temperature to make the indoor air suitable and comfortable.

2. Different principles

The operation principle of the fresh air system is to use the fan power, and the pipeline introduction and exhaust technology to connect the outdoor air to form a cycle and organize the movement of the indoor airflow to improve the indoor air quality. The central air conditioner uses the power of the fan to form an indoor air circulation. The air passes through the cold source or the heat source inside the air conditioner to absorb heat or heat, change the temperature, and send it into the room to get the comfortable temperature that people want.

Second, what are the links between the two?

1. Improve the comfort of life

The combination of the two can improve the comfort of life. The central air conditioner uses cooling and heating to keep the human body at a comfortable temperature. The fresh air system ensures the freshness of the indoor air. It is popular to say that if the doors and windows are closed 24 hours in the summer and the central air conditioning and fresh air system are turned on at the same time, the indoor temperature will remain at around 25 degrees, and the indoor CO2 concentration will be controlled below the national standard of 1000 PPM. The air is fresh, clean and refreshing, and has been solved. When closing the door and window to open the air conditioner, the problem of stuffiness and odor.

2. Improve respiratory health index

The combination of the two can improve the respiratory health index. In order to prevent hypoxia, air conditioning should be ventilated frequently, and air circulation is not easy to cause respiratory diseases. Airborne diseases can be caused by the hidden bacteria in the air conditioner. With the fresh air system, these hidden dangers can be completely eliminated.

Take an example of a fresh air product that takes health into consideration. For example, the Yuanda clean fresh air system completely isolates the fresh air and the exhaust air, achieves 100% fresh air ventilation, eliminates cross-contamination, and can prevent air-conditioning diseases. Electrostatic technology instantly kills bacteria and viruses in the air and prevents various airborne diseases. The most powerful point is to accurately control the indoor PM2.5 concentration in single digits. Even in the smoggy season, it is not a dream to achieve 100 times clean indoors and make your breathing healthy enough.

3. Saving air conditioning energy consumption

The combination of the two can greatly reduce the energy consumption of air conditioning. The fresh air system with heat recovery function, heat exchange between fresh air and exhaust air can reduce the loss of indoor temperature caused by ventilation, retain heat in winter, and retain cold capacity in summer, thus greatly saving air conditioning energy consumption and significantly reducing air conditioning. Investment costs and operating costs are even negative in the cold and hot summers. For example, the large clean new fan mentioned above has an exchange efficiency of up to 80% when the indoor and outdoor temperature difference reaches 25 °C. Such high heat recovery efficiency will save the user a lot of money for a long time.

3. Can the two be combined into one?

1. Can the two functions be combined into one?

Unfortunately, so far, there is no household equipment on the market that can perfectly integrate air conditioning and fresh air functions (100% fresh air is recommended for households). Previously, some central air conditioner manufacturers have introduced some air conditioners with fresh air function. However, this kind of air conditioner has caused the reality that it is not recognized by the market because of "poor performance of fresh air."

The main function of the air conditioner is to adjust the temperature. Its function of fresh air is that when the temperature of the indoor and outdoor control temperature is different, the fresh air enters the room; once the indoor and outdoor pressure reaches equilibrium, or is higher than the outdoor, the fresh air stops. Therefore, the amount of fresh air is difficult to control, and the indoor and outdoor air exchange rate is less than 20%, which is also the origin of what is called “fake new wind”. This limited fresh air supplement does not satisfy the user's demand for fresh air. This alone is doomed to replace the professional fresh air system.

Now there is a central air-conditioning intelligent ventilation system in the market. In fact, this system is also quite ignorant. Its principle is the joint installation of air-conditioning and fresh air system. In the end, it is the combination of fresh air system and central air-conditioning, not the true meaning of the new air function. Air conditioning.

2. Can the pipeline and tuyere be shared?

In the air conditioning system pipe (water pipe) is the refrigerant (water or Freon), while in the fresh air system pipe (duct), the air is taken, so the two system pipes cannot be shared. In order to prevent cross-contamination, the air outlets of air conditioners and fresh air are also recommended not to be shared, but they can be cleverly arranged in the ceiling. The air outlet of the air conditioner is opened according to the actual air outlet size of the indoor unit, while the fresh air outlet is smaller and the arrangement is more flexible. The two systems are best installed together to facilitate the placement of the best pipelines and to facilitate the design of the ceiling and wall holes.

From the above we can know that central air conditioning and fresh air systems are essential systems for creating a comfortable home. Although they can't be replaced by each other, they can be used together to make your family feel warm and healthy.

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