In air conditioning systems, HEPA air outlets play a crucial role. Not only does it filter fine particles from the air, but it also ensures that the air quality is up to par. Over time, the resistance of the HEPA filter will gradually increase, which requires us to replace the HEPA filter with a new one in time.
According to the relevant regulations, when the resistance value of the HEPA filter exceeds 450pa, it needs to be replaced. This is because when the resistance value exceeds a certain limit, even if the coarse-efficiency and medium-efficiency filters are replaced, the airflow speed cannot be increased. If an unrepairable leak is found on the surface of the HEPA filter, it is also necessary to replace it with a new HEPA filter immediately.
For the general situation, it is a reasonable choice to replace the high-efficiency filter every 1-2 years under the environmental conditions of application.
When installing an efficient air outlet, we also need to pay attention to some details. Before installation, it should be reasonably configured according to the resistance of each filter to ensure that the difference between the rated resistance and the average resistance between each filter on the same tuyere or air supply surface is less than 5%. This ensures uniform air circulation.
The selection of high-efficiency air outlets also needs to consider some major control parameters, including filtration efficiency, rated air volume, initial resistance, and dust holding capacity. According to the provisions of GB T6165-1985 "Performance Test Method for High Efficiency Air Filter", we can choose the high-efficiency air supply outlet that suits our needs.
We also have the option of an integrated high-efficiency air outlet. This air supply outlet is composed of an integrated static pressure box and an air filter, and the static pressure box is made of steel plate, and the built-in high-efficiency filter without partition plate. The air outlet is also equipped with a carbon steel white spray high-efficiency protective net, which makes the whole structure compact, reliable sealing, and can achieve uniform air supply.
It is important to understand the HEPA air supply and its resistance. Timely replacement of HEPA filters not only ensures air quality, but also extends the life of the equipment. During the installation process, we need to pay attention to the amount of resistance, choose the appropriate high-efficiency air supply outlet, and consider the integrated design to improve the overall performance. Only in this way can we enjoy fresh, healthy indoor air.