What is a ground air supply system and what are its advantages?

The fresh air in the all-effect air supply system enters the living area from under the floor, forming a layer of air lake on the floor, and the heat action or air pressure makes the fresh air flow to the room to form a dominant airflow, and the polluted air is removed from the upper part of the room, and the ventilation efficiency is higher than that of the traditional mixed ventilation sent up and down. This is also the most scientific and effective fresh air purification system on the market.

Its advantage is that the air is sent down to the upper row to form a consistent circulation, the ventilation path is scientific, and the ventilation effect is good; Heat exchange will be carried out to preserve the indoor thermal efficiency or cooling efficiency; The fresh air has high cleanliness after multi-stage purification and sterilization treatment, which can continuously replenish oxygen and remove pollutants such as carbon dioxide, formaldehyde, benzene, and ammonia. The house is fully enclosed for use and eliminates noise.

The air supply outlet of the floor air supply is generally set up flush with the ground, the ground needs to be overhead, and the lower space is used to arrange the air supply pipe or directly used as the air supply static pressure box, and the air supply enters the room through the floor air supply outlet, and the heat and mass exchange with the indoor air is discharged from the air outlet in the upper part of the room (above the ceiling or work area). This control method can well meet the different requirements of different users for temperature and ventilation in the same use space. And it is convenient to change the position of the tuyere as needed in the future.

Thomas Fresh Air System is an original "zero maintenance" technology, which can be placed on the floor, which greatly facilitates maintenance work and leaves one less maintenance port indoors. There are advantages to both top and surface wind speeds. The ducted bi-directional flow outdoor air system has top air supply and ground air supply.

In tower mode, both the turbid air in the room and the purified fresh air can be achieved through the air holes in the ceiling. Compared with the floor air supply mode, the exhaust holes are located on the floor or low-end wall, and the ventilation holes are located on the ceiling, which can reduce the dead angle of air supply and improve the efficiency of indoor and outdoor air circulation.

There is not much difference between the top air supply and the ground air supply mode under the premise that the airflow meets the needs of users, and the relative air supply performance is improved, but it is necessary to pay attention to the requirements of the air supply layer. The outdoor air system** and circulating airflow settings depend on the size of the room. Generally, the home fresh air purification system can be equipped with entrances and ventilation holes in each room.

Offices, conference rooms, villas and other rooms with large areas can appropriately increase ventilation holes and exhaust holes according to the needs of outdoor air circulation. In terms of the location selection of air vents, the main consideration is whether the air conditioning area is unblocked, and the air vents and vents are reasonably designed according to the structure of the room, so as to optimize the ventilation and ventilation design while ensuring the aesthetics. The distance between the air intake and the air inlet should be as large as possible to achieve the purpose of purifying the air.

The living room tuyere should be set up close to the source of pollution. For example, near the kitchen or hallway, the ventilation holes can be set up on the diagonal line of the air outlet. The fresh air system of the ground air supply mode does not need to be specially hung on the ceiling, and only needs to add a 30 mm high cushion layer to the floor, and the hidden pipe method is adopted, so it is more flexible on the way forward of the pipeline.

The air outlet of the fresh air system in the ground air supply mode is on the ground, so it is relatively simple and convenient to clean. The air outlet and tuyere position of the top air supply mode are slightly different from those of the ground air supply mode. The indoor air supply and ventilation are completed by the top tuyere, the requirements for the fresh air host are not high, and the construction is relatively simple, so there are certain advantages in cost and construction difficulty.

The ground air supply mode has many advantages, but it has high requirements for the installation of the main engine, and the construction is also more difficult. Because the air vent is on the ground, the height of the air cushion reduces the height of the entire indoor space to a certain extent. The tower air supply air vents and ventilation holes are all inside the top ceiling, so it is troublesome to clean, so it should be disassembled with a ladder or shelf before cleaning.

The biggest disadvantage of the top air supply mode is that the pipe needs to pass through the beam and through the wall. That is, the pipes are easy to cross and have poor flexibility. In addition, the exhaust speed should not be too large or too small.

Otherwise, it is easy to generate noise, and in severe cases, a short circuit may occur. The final choice of which one depends on the family's economic conditions and functional center, etc., but Bi Mojun believes that the payment machine has more obvious payment advantages than the normal payment machine, which is a good choice.

The first point, if it is the air supply, the speed may be particularly fast, and the system is also very perfectThe second point is that if the top air supply, then it may be very difficult, and the system will be subject to a great resistance, in this case it is very difficult to integrate.

The difference between the ground air supply and the top air supply is that the air outlet is installed in different positions, one is close to the ground, and the other is at the top of the room, the effect of the ground air supply is better than the top air supply, because the air circulation near the ground is worse, and the top air supply often cannot take into account the air at the bottom layer.

The difference is that the ground air supply is more unaffected, it is more convenient to use, and it is generally not smelly to smell, while the top air supply will allow people to smell bad smells.

It's very different because the direction of the two tailwinds is different, the effect is very different, and the feeling we feel is also different.

Ground air supply: generally use flat pipeline, buried under the ground cushion, the ground cushion needs to increase the height of 30mm, which can be effectively combined with the floor heating laying, and the direction is more flexible.

Top air supply: the pipeline may have to wear the beam or the wall, the minimum pipe diameter is 75mm, generally using the upper row, the pipeline may cross, if you want to decorate beautifully, you must hang the ceiling.

The main difference is the position of the air outlet, one is from the top and the other is from the bottom.

Ground air supply: Because carbon dioxide is heavier than air, the closer it is to the ground, the lower the oxygen content, therefore, the ground air can provide better air quality indoors, get better ventilation effect, and there is no waste of fresh air.

Top air supply: When the exhaust speed is too large, it is easy to cause noise, and when the supply and exhaust speed is too small and the wind pressure is not enough, it is easy to cause a short circuit. If it is a top return to the top, it is easy to be discharged after the fresh air comes in, but the air below may not be able to be discharged quickly.

What are the advantages and disadvantages of the ground air supply system, let's take a look together.

1. What are the advantages and disadvantages of the ground air supply system?

1. Since carbon dioxide is heavier than air, the closer it is to the ground, the lower the oxygen content. The cold air sent from the air supply outlet at the bottom of the floor or wall or the upper air supply outlet spreads on the surface of the floor to form an organized airflow organization; And a buoyant wake is formed around the heat source to take away the heat. Due to the low wind speed, the turbulence of the airflow organization is gentle, and there is no large vortex, so the air temperature in the indoor work area is relatively consistent in the horizontal direction, and the stratification in the vertical direction, the larger the layer height, the more obvious this phenomenon is.

The upward wake generated by the heat source not only carries away the heat load, but also brings the dirty air from the work area to the upper part of the room, where it is discharged by the exhaust vents located at the top. The fresh air, waste heat and pollutants sent from the bottom air outlet move upwards under the action of buoyancy and the driving force of the airflow organization, so the pure combustion of the ground air supply fresh air system can provide good air quality in the indoor work area.

2. Although ground air supply has certain advantages, it also has certain applicable conditions. Generally, it is suitable for places where the pollution source is related to the heat source, and the floor height is not lower, so that the polluted air is easy to be carried away by the buoyancy wake; There is also an upper limit on the design cooling load of the room, and the research shows that if there is enough space for a large air supply and dispersion device, the room cooling load can reach 120W, and the room cooling load is too large, and the power energy consumption of replacement ventilation will be significantly increased, and the economy will be reduced; In addition, the contradiction between the land occupied and the space occupied by the ground air supply device is also more prominent. It can be seen that according to the different installation environment of the fresh air system, the selected fresh air system will also be somewhat different, and only by choosing the fresh air system suitable for your own home can you achieve the best air exchange effect.

2. What is the working principle of positive pressure air supply?

The principle of positive pressure air supply is mainly to send the wind directly into the living room through power. According to experts, such a system is theoretically not too problematic, but it has poor convection. Another form of negative pressure ventilation is to suck air through the exhaust fan to extract part of the indoor air, resulting in the indoor air pressure is less than the outdoor air pressure, and the outside air automatically enters the space under the atmospheric pressure, thus forming a directional and stable airflow zone in the space.

It is mainly characterized by directional and stable airflow, which is connected to the outside world rather than internal circulation in space.

After reading the above introduction, do you understand the advantages and disadvantages of the ground air supply system?

The air supply system mainly includes a blower, a cold air pipe, a hot blast stove, a hot air duct and a hot air enclosure.

The fresh air system is an independent air handling system composed of air supply system and exhaust air system, which is divided into two types: ducted fresh air system and ductless fresh air system. The ducted fresh air system is composed of fresh air fans and pipe fittings, which purify the outdoor air through the fresh air fan and introduce it into the room, and discharge the indoor air through the pipes; The ductless fresh air system is composed of fresh air fans, which also purify the outdoor air and introduce it into the room. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area office use due to the large amount of work, while the ductless fresh air system is more suitable for home use because of the easy installation.

Advantages: Generally, the lower and upper rows are used to completely replace the ventilation, and there is no waste of fresh air, and the effect is better. The floor air supply outlet panel can be directly taken out on the ground for cleaning, and the maintenance cost and difficulty are low.

Disadvantages: The ground air supply generally adopts flat pipelines, which are buried under the ground cushion, and the direction is more flexible, but the construction difficulty is slightly larger, and the cost is relatively high.

The ground is much stronger than the top back is much stronger, the fresh air is not like the air conditioner, the effect can be directly felt, the top back you might as well not install, the fresh air in your breathing area can not be circulated. It is theoretically possible to travel on the ceiling and go back. I don't know what the actual situation is.

Comparison between top air supply and ground air supply of household fresh air system 1: ventilation effect.

Top air supply: When the air supply and exhaust speed is too large, it is easy to cause noise; When the air supply and exhaust speed is too small and the wind pressure is not enough, it is easy to cause a short circuit. The fresh air can't be suppressed!

Ground air supply: Generally, the lower and upper rows are generally used to completely replace the ventilation, and there is no waste of fresh air, and the effect is better!

Comparison between top air supply and ground air supply of household fresh air system 2: construction difficulty.

Top air supply: The pipe may pass through the beam, and it must pass through the wall, and the upper feed and upper row are generally used, and the pipeline is easy to cross.

Ground air supply: Ground air supply generally adopts flat pipelines, which are buried under the ground cushion, arranged at will, and flexible.

Comparison between top air supply and ground air supply in household fresh air system 3: the influence of floor height.

Top air supply: each room has a pipe arrangement, in order to decorate beautifully, the ceiling must be suspended, and the minimum pipe diameter is 75mm.

Ground air supply: The floor cushion only needs to increase the height by 30mm, and there is no need for a suspended ceiling.

Comparison between top air supply and ground air supply of household fresh air system 4: daily maintenance.

Top air supply: the air supply and exhaust outlets are in the ceiling, and during maintenance, it needs to be disassembled and cleaned at a high level.

Ground air supply: Take out the floor air supply panel directly on the ground for cleaning.

The generation of ground air supply is because of some disadvantages of the ceiling type, and now to talk about the disadvantages of ground air supply, it is necessary to give the current wall-mounted (no pipe) fresh air system.

Compared with the pipeless fresh air system, the biggest disadvantage of the ground air supply fresh air system is that it is inconvenient to install and maintain.

When the fresh air system feeds fresh air, it can effectively remove harmful factors such as sand, dust, odor, and haze in the air. Inside the room: harmful gases (formaldehyde, benzene, cold virus, oil smoke, etc.) are suspended in the air, and with the continuous replacement of the air by the fresh air system, the dirty gas will be effectively discharged in a short time (not adsorption or filtration, but completely discharged) to ensure the air quality in our room.

Characteristics of Zhongjia system:Stable and reliable; ⑵.

Continuous ventilation: air supply: filter out outdoor dust, odor and haze; Exhaust:

Remove turbid gases and suspended solids (dust) from the house Comfortable and healthy: Ensure the oxygen content of the indoor space, which is more conducive to sleeping, learning and fitness efficiency; Small footprint, concealed design (the main machine and pipes are in the ceiling or inside the wall); Energy saving, low consumption, no noise: minimize the loss of cold (heat) during air replacement, and shorten the working time of other heating or cooling equipment; Long service life.

The advantage is that there are fewer holes, and the airflow organization of the ground top return is better!

The disadvantage is that the wind pressure loss is relatively large and the air volume is insufficient.

Ground air concept.

Ground air supply: It is a kind of fresh air system, which uses the concept of fresh air lake to replace fresh air, and replaces all indoor dirty air outdoors.

Ground air supply advantage.

The difference with conventional air supply is that the conventional air supply mode adopts top back and ground air supply is ground back and back.

Air distribution in the room: According to the physical properties of the air, hot air will float on top of the room with dirty air, and relatively clean air will settle in the lower part of the room.

Conventional air supply: air is supplied from the top, mixed with the dirty air in the room, part of the fresh air is diluted and then circulated in the room, and part of the air is directly pumped to the outside through the fresh air unit;

Ground air supply: Fresh air rises slowly from the floor, and then the dirty air is pumped outside through the fresh air unit at the top.

Most of our activities in the room belong to sitting, generally breathing fresh air in the space, the conventional fresh air is sent down through the top, it is difficult to reach our respiratory tract, but the way of ground air supply is easy to get 100% fresh air by replacing the indoor air.

Ground air supply construction.

The flat air duct is connected to 35mm*135mm, which can be used together with floor heating to achieve a perfect combination. Lay the pipes for the floor air supply first, then lay the floor heating insulation board, reflective film, steel wire mesh, and PERT floor heating pipes, and then level. Therefore, the floor heating and floor air supply fresh air system do not conflict at all, and can cooperate with each other to achieve the effect of comfortable home.