Clean room design and installation project
Clean room design and installation project
In order to reduce the noise of the ventilation and air conditioning system in the clean room, attention should be paid to the selection of high-efficiency and low-noise equipment in the design; the air speed in the air duct is selected, the total air duct is 6m/s-10m/s, and there are no air supply and return air outlets The branch air duct is 4m/s-6m/s, and the branch air duct with air supply and return air outlet is 2m/s-5m/s...
Text label: clean clean room modular design, clean room engineering, clean room installation
Clean room design and installation project
In order to reduce the noise of the ventilation and air conditioning system in the clean room, attention should be paid to the selection of high-efficiency and low-noise equipment in the design; the air speed in the air duct is selected, the total air duct is 6m/s-10m/s, and there are no air supply and return air outlets The branch air duct is 4m/s-6m/s, and the branch air duct with air supply and return air outlet is 2m/s-5m/s. Ventilation and air-conditioning equipment should be equipped with vibration damping and vibration isolation devices, and vibration isolators and vibration damping foundations should be provided if necessary. The connection between equipment and air ducts and accessories should be provided with flexible pipes; Sharp turns, changing diameters, and if necessary, elbows should be provided with reverse flow blades; ventilation components such as air ducts and valves should have sufficient strength to avoid or reduce the airflow noise and vibration caused; reduce the total system resistance as much as possible.
The pressure difference of the room depends on the difference between the supply air, return air and exhaust air volume of the room. To keep the pressure difference in the room stable, the air volume sent into and out of the room should be kept constant first. There are many specific methods. If a differential pressure sensor is set on the main air duct, when the air volume changes, the fan speed can be changed by the frequency converter to keep the total air volume unchanged; the air volume valve is set on the air duct entering and leaving the room, so that the air flow in and out of the room can be changed. The air volume is constant and the pressure difference sensor can also be installed in the clean room. When the room pressure difference value deviates, the variable air volume valve set on the exhaust pipe is automatically adjusted to keep the indoor pressure stable; Save investment as much as possible while ensuring the stability of the core area of u200bu200bthe system. The practice of affecting or changing the room pressure difference should be avoided in the clean room project. For example, in the same purification air conditioning system, the exhaust and return air switching of individual rooms or intermittent use of clean room exhaust systems, such as tunnel ovens, Exhaust air from process equipment such as dry heat sterilizers without taking any measures to protect the room pressure, etc., these practices will destroy the air balance in the room and cause the clean room modular pressure to change. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean workshops.
The setting of the air conditioning system of each quality control laboratory should not only meet the process requirements and the flexibility of layout, but also prevent mutual interference or cross-contamination between the laboratories through the air system; microbial limit inspection room, antibiotic microbial test The air in the clean room modular needs to be discharged directly, and the return air cannot be used; the air in the radioactive laboratory should not be circulated by the return air, and the indoor air is directly discharged to the outside after being purified by the high-efficiency filter; the design of the air supply and exhaust system of the positive control laboratory should be integrated Considering the experimental conditions, when the operation involves hazardous materials, it should generally be carried out in biological safety cabinets, isolation equipment and other equipment that can effectively control gas leakage. Otherwise, a fresh air system should be used, and the setting of the exhaust system should be based on the positive control experiment. The biosafety level of the room is evaluated to determine whether it needs to be purified by a high-efficiency air filter and then discharged to the atmosphere. For laboratories that have full exhaust requirements and share the same purification air conditioning system, a positive pressure air lock should be installed to keep the laboratory at a relative negative pressure, and a pressure difference monitoring device should be installed to prevent indoor air from leaking out; For systems, it is necessary to set up anti-backflow measures on their respective exhaust pipes to prevent each functional laboratory from interfering with each other during shutdown.
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