How to test the air flow and speed in the clean room? The following are the details:
1. The detection of air volume and wind speed must be carried out first, and the effects of purifying air conditioning must be obtained under the condition of designed air volume and wind speed.
2. Before air flow detection, it is necessary to check whether the fan is running normally, whether the parts of the system are installed correctly, whether there are obstacles (such as blocked or blocked filters). All valves should be fixed at a certain opening position, and the dimensions of the tested tuyeres and ducts must be measured.
3. For one-way flow (laminar flow) clean rooms, the average wind speed and cross-sectional area product method are used to determine the air supply volume. The measured cross-sectional area of vertical one-way flow (laminar flow) clean rooms is 0.8 m from the ground, and the vertical cross-sectional area of horizontal one-way flow (laminar flow) clean rooms is 0.5 m from the air supply surface. The spacing of measuring points on the cross section should not be greater than 2 m, and the measuring points should be no less than 10, evenly arranged. The instrument is a hot-ball anemometer.
4. For turbulent clean rooms, the air supply volume is determined by tuyere method or duct method. See Items 6, 7 and 8, respectively.
5. For air outlets without filters, the method of Appendix 1 of the current national standard "Code for Construction and Acceptance of Ventilation and Air Conditioning Engineering" GBJ243 can be applied.
6. For the air outlet of the filter installed in the clean room, auxiliary air duct can be selected according to the type of air outlet. That is to say, the straight pipe section with the same length as that of the air outlet and equal to 2 times the length of the air outlet side is made of hard plate, which is connected to the outside of the air outlet of the filter. On the plane of the air outlet of the auxiliary air duct, the measuring points are evenly arranged at least 6 points according to the fewer measuring points. The hot-ball anemometer was used to measure the wind speed at each point. The air volume is determined by the average net cross-section area of the tuyere cross-section.
The professional technicians of Ed Purification Engineering design a reasonable plan to adapt to the production process and the cost of the project. The design technical indicators meet the national standard of clean room. The experienced construction team of the purification project is fast and efficient, and the after-sales service is perfect. To learn more about the medical purification industry, please pay attention to the Wechat Public No. Aide-188 (Ed Purification and Oxygen Supply)