I. Definition:

Fresh Air Supply System is part of the ventilation system in Interior Design and Construction projects. This system has the function of supplying and circulating fresh air from outside into the Interior Space, especially helping to improve air quality, creating a more comfortable and healthy living and working environment.

In particular, Fresh Air Supply Systems are divided into 2 main types:

- Local Fresh Air Supply System

- Central Fresh Air Supply System

And they are classified into separate types such as:

- One-way fresh air supply

- Two-way fresh air supply

- Two-way fresh air supply with heat recovery

II. Structure and operating principles:

1. Structure:

Fresh Air Supply System for Architectural and Interior works includes the following main components:

- Fan : Is the main device to suck and supply fresh air from outside into the space. The fan can be a centrifugal fan or an axial fan, depending on the specific requirements of the system.

- Air vent : Distributes and controls air flow and can be adjusted to change wind direction and air intake.

- Air filter: Helps remove dust, pollution and other impurities in the air before being brought into the interior space. In particular, some modern fresh air supply systems today are equipped with standard PM2.5/HEPA fine dust filters and more. However, depending on the system cost and customer requirements, the fresh air supply system may or may not be equipped with an Air Filter.

- Air conditioner (optional) : Depending on the initial fresh air supply system equipment, if necessary, the air conditioner will cool or heat the air before bringing it into the space of use.

- Duct system : Used to conduct air from the exhaust fan cabin to areas requiring air supply. The duct system needs to be designed to minimize pressure loss. The duct system can be equipped with insulation or sound absorption to ensure compliance with system requirements and customer wishes.

- Air damper/Air box : Is the part that collects air after being led from the exhaust fan cabin through the duct system, helping to adjust the amount of air supplied to different air vent areas in the system.

- Sensor and control system : To control, monitor and adjust the operation of the fresh air supply system, to ensure the supply of fresh air effectively and save energy as well as bring convenience to users.

2. Operating principle:

- Air intake : The Fresh Air Supply System works by creating negative pressure, drawing air from the outside environment into the interior.

- Air filter : Fresh air is sucked in and passes through the filter, which helps remove dust, impurities and pollutants in the air, ensuring that the air supplied to the interior space is clean and fresh.

- Air conditioning (if any) : After being filtered, the air can pass through the air conditioner to be cooled or heated, depending on the requirements of the space used.

- Air supply : Treated air will be pushed through the duct system and out through the vents. This process ensures that fresh air is evenly supplied to the necessary areas in the building or workspace as designed.

- Air flow adjustment : The system can be adjusted with a damper to control the flow and direction of air, ensuring comfort and efficiency in air supply.

- Monitoring and control : Sensors can be used to monitor air quality, temperature and humidity. The control system will automatically adjust the operation of fans and air conditioners to maintain optimal and convenient conditions during use.

3. Fresh air supply standards:

According to TCVN 5687 - 2010, the amount of fresh air supplied into a space must ensure at least 10% of the total amount of air in that space and must reach the minimum required level of 20 m3/h/person. However, the above standard parameters are only the minimum required level, the amount of fresh air supplied into a closed room space at the most ideal level depends on the area and is suggested in the following table:

STANDARDS OF FRESH AIR SUPPLY SYSTEMS FOR SOME TYPICAL SPACES

III. Advantages and Disadvantages of Fresh Air Supply System:

1. Advantages:

- Improve air quality: Providing fresh air helps remove impurities, dust and pollution in the space compared to the method of ventilating the room through doors/windows.

- Health support : Fresh air will help improve respiratory health, especially for people with respiratory problems or allergies.

- Reduce unpleasant odors: The system helps eliminate odors, stagnant air and toxic gases, creating a fresher and more pleasant space.

- Effective air conditioning: When combined with an air conditioning system, a fresh air fan can help maintain a stable temperature and save energy.

- Reduce humidity: The system helps control humidity in the space, preventing mold formation and problems related to high humidity.

- Easy to install and maintain : The system is usually simple structure, easy to install and maintain periodically.

- Reduce greenhouse effects: Provide fresh air to minimize the overheating phenomenon due to lack of ventilation, improve living environment.

2. Disadvantages:

- Investment cost is quite high: Installing a Fresh Air Supply system can be expensive, including equipment costs, duct system, air vents and installation labor.

- Regular maintenance: The system needs regular maintenance and inspection, especially the filter, to ensure optimal performance.

- Noise: Some Fresh Air Supply systems are not cared for and insulated, the system noise can make noise when operating, causing discomfort to users, especially in spaces that require quietness.

- Depending on weather conditions: Air supply performance can be affected by external weather conditions such as temperature, humidity and pollution.

- Installation space requirements: The system requires space to install the exhaust fan cabin, ductwork and other equipment, which can be a problem in buildings with limited space.

- Outside air quality: If the outside air is polluted, supplying fresh air can increase the amount of pollution in the interior space.

IV. Application of Fresh Air Supply System in Interior Design:

The application of Fresh Air Supply System in Interior Design is becoming more and more popular in the market because of the benefits and role it brings in Air Convection.

1. Fresh Air Supply System in Residential Space:

- Fresh air supply system is an essential initial factor that needs to be calculated in modern residential space design. Because it not only contributes to creating a comfortable and pleasant living space but also protects human health. 

+ By providing air convection, this system maintains humidity balance, prevents mold and contributes to improving respiratory health.
+ Energy saving ability helps reduce living costs, creating a quiet and relaxing space for the family .

Fresh Air Supply System in Apartment Interior Design

Fresh air supply system in Interior Design of Townhouses, Villas, and Adjacent Houses

2. Fresh Air Supply System in Working Space:

- Fresh air supply system in the Workspace is not only a technical factor but also an important part of the strategy to create a better working environment. By investing in this system, businesses can improve the health and productivity of employees, thereby achieving higher work efficiency.

3. Fresh Air Supply System in Service Business Space:

- Fresh Air Supply System plays an important improving role in customer experience in service business spaces such as: Restaurants, Coffee Shops and Shopping Centers. Investing in this system not only creates benefits during use but also contributes to sustainable development and business problems of the Enterprise.

V. Summary:

SUMMARY OF FRESH AIR SUPPLY SYSTEM

In conclusion, the Fresh Air Supply System plays a very important role in Air Convection with Interior Space. Although there are some minor disadvantages, it is impossible not to mention the benefits that this system brings to life, especially human health. Because it helps people improve their living environment, it will gradually become an essential part of modern Interior Design Space.

JDesign Co., LTD is proud of being a professional Interior Design and Construction Company. We are confident to always bring to our customers the complete Interior Design and Construction solution with the best designs and the latest trends, besides the quality of completing the Project with the most reasonable time. with the most economic cost, always accompanied by the condition of product maintenance support during and after the best project handover time to customers!

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