Sterile laboratory ventilation system requirements?
Sterile laboratory ventilation system requirements?
Aseptic laboratory ventilation is to discharge the dirty air in the room directly or after purification to the outside to replenish fresh air, so as to maintain the indoor air conditions, so as to meet the hygienic standards and the requirements of the production process; the classification of ventilation , According to the power, the ventilation system...
Text label: sterile laboratory, ventilation system requirements, laboratory system
Aseptic pharma machinery ventilation system requirements?
Aseptic laboratory ventilation is to discharge the dirty air in the room directly or after purification to the outside to replenish fresh air, so as to maintain the indoor air conditions, so as to meet the hygienic standards and the requirements of the production process; the classification of ventilation , According to different power, ventilation system can be divided into natural and mechanical ventilation, and mechanical ventilation can be divided into general ventilation and local ventilation; laboratory ventilation and comfort air conditioning system have different ventilation design requirements, the main purpose is to provide safe and comfortable work environment, reducing the possibility of personnel being exposed to dangerous environments. Ventilation mainly solves the problem of physical health and labor protection of the working environment for the experimental personnel; the ventilation terminal equipment mainly includes fume hoods, universal exhaust hoods, atomic absorption hoods, absorption Type exhaust hood, etc.; ventilation pipeline system mainly includes air ducts, air valves, mufflers, waste gas treatment towers, etc.; ventilation units mainly include fans.
ventilation design, the ventilation volume can be determined according to the number of air changes in the room. The number of air changes in the laboratory is 10-12 times per hour, and can be increased accordingly in special circumstances. The room ventilation is generally 500*500mm The iron hood is used as the ventilation terminal equipment, and the air volume of each hood can reach 600m3/H; the air speed of the branch pipe of the fume hood is 6-10m/s, and it can exceed 10m/s in special cases, but it should not exceed 12m/s; the air speed of the main pipe is 10-10m/s. 14m/s, the calculation time is generally 10m/s, if the pipeline is relatively long, 12m/s is selected, and if the air volume is large, 14m/s is selected; the surface wind speed of the fume hood is generally controlled at 0.375-0.75m/s, and the acceptance standard is generally 0.5m /s, the best surface wind speed is 0.508m/s; when measuring the wind speed, generally pull the sliding door to a height of 5cm to measure, the wind speed reaches 0.3-0.5m/s, if the height of the sliding door is too large, measure the height of 5cm below the sliding door wind speed. The outdoor noise should be controlled at 70 decibels, and the indoor noise should be controlled at 55 decibels. The noise of the fan can be divided into its own mechanical noise and wind noise. When the power of the fan is not large, the wind noise can be eliminated by adding a rain cover above the fan. , When using high-power fans, mufflers are generally added at the inlet and outlet of the fan to eliminate wind noise. Mechanical noise is mainly solved by building soundproof walls or adding soft joints at the inlet and outlet of the fan. Install shock absorbers or add shock pads. The function of the electronic air valve is to adjust the ventilation volume of each fume hood by adjusting the radius of the air duct of each fume hood, so as to keep the surface wind speed constant when the opening area of u200bu200bthe fume hood changes. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for sterile laboratories and microbiology laboratories.
Galvanized steel ducts are commonly used in air-conditioning supply and return ducts. They have the advantages of long service life, low frictional resistance, and quick and convenient production. The disadvantages are limited by processing equipment, and the thickness should not exceed 1.2mm; stainless steel ducts are often used for super The air supply pipe after the high-efficiency filter of the net system, the pipeline for transporting corrosive gases, has the advantages of beautiful appearance, smooth inner wall, low resistance, good air tightness, high compressive strength, corrosion resistance, high temperature resistance, and high cost; inorganic glass fiber reinforced plastic Air ducts are often used in air-conditioning systems and fire-fighting smoke exhaust systems. They have the advantages of corrosion resistance, long service life and high strength. The cost is basically the same as that of steel plate air ducts. Heavy and difficult on-site maintenance; flexible air ducts are used for the connection between ventilation and air-conditioning ducts and end devices; circular air ducts have high strength and consume less steel, but take up a large amount of effective space. The air duct should be a circular spiral air duct; the rectangular air duct occupies less effective space and is easy to arrange.
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