Laboratory ventilation and purification system requirements

1. Requirements for Laboratory Ventilation and Purification System:
(1) Construction Quality Acceptance Standards for Ventilation and Air Conditioning Engineering (GB 50243-2002)
(2) Brief Manual of Simple Ventilation Design
(3) Handbook of Heating, Ventilation, Air Conditioning and Sanitation
(4) Urban Ambient Noise Emission Standard
(5) Design Code for Environmental Protection in Machinery Industry (JBJ 16-2000)
(6) Standard for Laboratory Ventilation Cabinets in Mechanical Industry of the People's Republic of China
(7) related industry materials and requirements provided by the owner. 2. Requirements:
2.1 The ventilation and air exchange rate in the laboratory is 8-20 times per hour. 2.2 The wind speed in the branch pipe is 6-12m/s, and the wind speed in the main pipe is 8-14m/s. 2.3 Design wind volume of ventilation equipment:
2.3.1 The design wind volume of a single 1500 fume hood is 1500 m3/h; the design wind volume of a single 1800 fume hood is 1800 m3/h; the design wind volume of a single exhaust hood is 200-300 m3/h.
The design wind volume of a single 300*300mm exhaust hood is 800 m3/h, and it shall not be less than 800 m3/h. When the height of the fume hood cabinet door is 35-40cm, the surface wind speed of the cabinet door is 0.5m/s. 2.3.2 The entire ventilation system is a medium and low pressure system: 500
3.1 Fan requirements:
All ventilation fans in the laboratory ventilation system are made of glass fiber reinforced plastic (FRP) centrifugal fans, with A-type transmission. FRP centrifugal fans are used, which are energy-efficient, have a flat efficiency curve, stable performance, easy maintenance, corrosion-resistant, and have a long service life. 3.2 Piping design requirements:
3.2.1 All ducts are made of PVC pipe materials. The design pressure of all pipes is less than 1500 Pa, which belongs to medium and low