Clean laboratory ventilation system
Clean laboratory ventilation system
Clean laboratory ventilation is to purify the indoor dirty air and discharge it to the outdoors, and then 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; according to the different power, the ventilation system It can be divided into natural ventilation and mechanical ventilation...
Text label: clean laboratory, clean laboratory design, laboratory ventilation system
Clean Ventilation System
Clean pharma machinery ventilation is to purify the indoor dirty air and discharge it to the outdoors, and then 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; according to the different power, the ventilation system It can be divided into natural ventilation and mechanical ventilation, and mechanical ventilation can be divided into general ventilation and local ventilation; general ventilation is a way of ventilating the room as a whole, and local ventilation is the control of the scope of ventilation in the formation of harmful substances. place, or ventilation methods in local areas where staff often move, such as fume hoods, universal exhaust hoods, atomic absorption hoods, etc.; ventilation terminal equipment of laboratory ventilation systems, mainly including fume hoods, universal exhaust hoods , atomic absorption hood, blowing and suction exhaust hood, etc.; ventilation pipeline system, mainly including fans, air ducts, air valves, mufflers, waste gas treatment towers, etc.
The ventilation efficiency of the circular air duct is high, but the diameter should not be too large; for general laboratories, if the gas emitted from the room is not corrosive, the air duct can be made of galvanized iron; if the exhaust gas discharged from the laboratory is corrosive to a certain extent , The air duct should be made of PVC and FRP air ducts of corrosion-resistant materials; if the exhaust gas of the ventilation system contains strong acid, the ventilation duct should be made of PP material. For laboratories with no or only slight corrosion, or customer requirements, stainless steel air ducts can also be used. Multiple fume hoods are placed in the room or the indoor environment needs to be supplemented with air, and the supplemental air volume is generally 70% of the exhaust air volume. Pretreatment is also required before it can be sent to the laboratory. There are many ways to make up the air, including making up air through indoor air conditioners; using make-up type fume hoods; and installing make-up air systems outside the ventilation system. When making a supplementary air system, the supplementary air volume should be determined according to the airtightness of the room. The maximum supplementary air volume is 70% of the outlet air volume, and the minimum is 20%. The wind speed of the main duct can be set to 8m/s. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean laboratories and sterile rooms.
Exhaust equipment commonly used in laboratories mainly include: fume hood, atomic absorption hood, universal exhaust hood, ceiling exhaust hood, table-top exhaust hood, etc. Among them, fume hood is the most common; The airflow is to suck the air in the laboratory into the fume hood through the exhaust fan, and dilute the polluted gas in the fume hood and discharge it to the outdoors through the exhaust system, so as to achieve low concentration diffusion; the universal exhaust hood is for local ventilation The first choice, simple installation, flexible positioning, good ventilation performance, can effectively protect the personal safety of laboratory personnel; exhaust hoods are mainly suitable for chemical laboratories, and are essential equipment in solving the overall ventilation requirements of such laboratories One; atomic absorption hoods are mainly suitable for all kinds of large-scale precision instruments, which require positioning and installation, and have set ventilation performance parameters, which is also one of the factors that must be considered in the overall pharma machinery planning.
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