HVAC heating, ventilation, and air -conditioning systems are general names that can regulate the environment by controlling temperature, relative humidity, air movement and air quality (including fresh air, gas particles and gas). The air purification system can reduce or increase the temperature, reduce or increase air humidity and moisture, and reduce the content of granular smoke and dust pollutants in the air.

Among the clean room standards in each country, the number of experience ventilation in the same level is not the same. my country's \"Clean Factory Design Specification\" (GB 50073-2013) clearly stipulates the number of experiences required for different levels of non-single-way streamlined cleaning air supply volume calculations, see below: 2 should be based on indoor personnel, craft The arrangement of the device and the like of material transmission are used, and the lower limit is employed.

In the laboratory, the inventory air filter design is inseparable from the initial effect filter, the alive filter, the high-efficiency filter, and the air filtered through the biosafety cabinet can be filtered through the exhaust pipe of the system. Directly to the atmosphere, you can also send the drain system of the building. The pressure balance of the biological safety cabinet and the exhaust system should be ensured.

1. The primary control parameter filtering efficiency, rated air volume, and the amount of dust, etc. under the rated air volume. 2. Press GB / T6165-1985 \"High-efficiency Air Filter Performance Test Method Transmission and Resistance\" specified by the method, the transmittance is ≤0.1% (i.e., efficiency ≥99.9%) or a particle size ≥0.1 μm particles The filter for counting transmittance ≤ 0.001% (ie efficiency ≥99.999%) is a high efficiency air filter. 3. High-efficiency air filters commonly filled with ultrafine glass fibers. 4. The air filter should comply with fire prevention requirements, and the high-efficiency air filter is divided into three levels by fire resistance: 1 grade filter, all materials of the filter are non-fuel, and the non-combustible materials should comply with GB8624-1997 A. Level 2 filter, filter filter should be a non-combustible material that meets GB8624-1997 A

The medium-efficiency filter belongs to the F series filter among the air filters. The F series of medium-efficiency air filters are divided into bag-type and non-bag-type. The bag-type includes plate-type medium-efficiency filters, partition-type medium-efficiency filters, and combined medium-effic