Project CategoryMain project classification
First, the air purification treatment of air cleanliness at all levels in the purification project should use three stages of primary, intermediate and high efficiency air filters. Class 100,000 air purification treatment, sub-high efficiency air filters can be used instead of high-efficiency air filters.
2. If the air-purifying system needs electric heating, a tubular electric heater should be selected, and the location should be arranged on the upwind side of the high-efficiency air filter, and fire safety measures should be taken.
Third, the selection and arrangement of air filters and installation methods should comply with: primary effect air filters should not use oil-immersed filters; medium efficiency air filters should be concentrated in the positive pressure section of the purification air conditioning system; high efficiency air filtration The air filter or sub-high efficiency air filter should be installed at the end of the purification air conditioning system. The installation method of the high-efficiency air filter should be simple and reliable, and should be leak-detected and replaced. High efficiency air filters with similar efficiency should be installed in the same clean room.
Fourth, in the purification project, in addition to the direct current system and the system with fans on duty, the clean air conditioning system should take anti-pouring measures to prevent outdoor polluted air from entering the clean room through the fresh air outlet.
Fifth, when determining the centralized or decentralized purification air conditioning system, factors such as the characteristics of the production process and the cleanliness level, area, and location of the clean room air should be comprehensively considered. When the area of continuous dust-free workshop in the production process is large, the clean room with centralized location and strict noise control and vibration control requirements should be adopted.
6. The blower can be selected according to the total air supply volume and total resistance value of the purified air conditioning system. The resistance of the medium efficiency and high efficiency air filter should be calculated based on twice its initial resistance.
7. The design of the purified air conditioning system should use the return air reasonably. When the process generates a lot of harmful substances and the local treatment cannot meet the sanitary requirements, or it is harmful to other processes, the return air should not be used.