Which would be better, floor air supply or ceiling air supply?

Fresh air system installation in the end using the floor air supply and roof air supply which will be better? Today we will stand on the scientific point of view to analyse this problem. The general new air installation is divided into ground to top back, top to top back, top to ground back. Let's analyse them separately.

1. First of all, we analyse the air principle. Dirty air is generally particles, matter carbon dioxide and so on more, that is to say, the weight of dirty air must be heavier than the fresh air, then by gravity, dirty air indoors is generally in the air inside the house of the lower level.

Then according to this situation, we use the ground to send the ground back to the installation, you can make the dirty air from the ground out, fresh air into the top, which is the most logical approach, the operating theatre of the hospital is also so dry, but we have to consider the actual situation of the home installation of new air. If the home installation of new air does not use this approach to install why not recommended? The reason is very simple, the home environment is complex, dust and other small debris is more, and the exhaust port is placed on the ground, the exhaust port at the pressure is generally small, so debris is easy to enter the exhaust pipe. Over the years, it is easy to cause the accumulation of debris in the exhaust pipe, which can not be cleaned.

2. What about the top-feeding and top-returning fresh air installation? Still the same, from the composition of the air, just as we said, dirty air will be heavier than fresh air, so dirty air will be in the lower part of the house, and when using the installation of top-feeding top-return, top-feeding fresh air will first be on the top, because the weight of fresh air is lighter than dirty air, and top-return that is to say that the air is discharged from the top, and what is the air that is discharged? It must be the air at the top, which means that the fresh air at the top is exhausted.

Although it is possible to use the indoor diagonal installation of air supply and return air outlets to generate the principle of relative airflow, but the fresh air is first stained with the top, so the exhaust air is first discharged must be the top of the air.

How to solve this problem? That is, the power of the air supply is higher than the power of the return air, so that the amount of air sent in excess of the amount of air discharged. In this way, slowly fresh air will fall into the dirty air, "dilute" the dirty air, and finally after a long time, to achieve the effect of indoor air purification.

3.In addition, we come to talk about the top of the ground back to the installation of this new air. In fact, I personally feel that this installation is more reasonable, but for the new air motor requirements are relatively high. A lot of brands on the market can not do the ground to the wind, why many brands can not do the ground to the wind? The reason is that the ground pipeline is flat, the pipeline is smaller, and the pipeline of the top air supply is much smaller than the pipeline, and the pipeline is small and long, resulting in a very high resistance, especially a Japanese brand of motor power can not meet the requirements, resulting in insufficient power, the amount of new air is small.

Finally, let's talk about the benefits and rationality of floor air supply. We are still according to just analyse the method to analyse, we all know that the dirty air at the bottom of the house, then the new air in the bottom to come in, due to the weight to be lower than the dirty air, so the fresh air will float upwards, we are first of all to breathe the fresh air into the room, and at the same time, "dilute" dirty air, so that in a short period of time, the dirty air can be diluted to complete the installation. In a short period of time, the dirty air can be diluted to complete, and the ground to send the top back to the installation or the ground to send the top row of the installation is very good composition of the house three-dimensional diagonal airflow, so that the indoor air to be fully purified, dirty air can be discharged indoors in a relatively short period of time.

So if your home uses a combination of air conditioning + underfloor heating, then floor-fed air is the more comfortable option. If you rely on air conditioning for both cooling and heating, let's go for the more economical mode - top air supply.

analyse them separately.