广东CDC实验室变风量控制系统技术说明.pdf.txt

文档介绍：广东CDC实验室变风量控制系统技术说明
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Technical Proposal For Laboratory VAV System
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The system is designed according to the following Guidelines and standards ANSI/AIHA :American National Standards for Laboratory Ventilation ASHRAE 2007:Handbook –HVAC Application NFPA45-2000:Standard on Fire Protection for Laboratories Using Chemical ANSI/ASHRAE 110-1995:Method of Testing Performance of Laboratory Fume Hood SEFA 1-2002: laboratory Fume Hoods mended Practices EN14175:Fume Cupboards Safety and Performance Requirements rP‘ x ‹N¢G£ fN¢ ” JG/T222-2007
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The design is made for the airflow control system for Guangdong CDC. The highly performance airflow control solution from Schneider are used here. 2ˇ4‡A Au,´ Design Aim ]<
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To guarantee the health and safety of laboratory staff
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Control the exhaust air of fume hoods in the laboratory in the right way and guarantee the face velocity; –A rP‘ x / ªE N¢ ¨ –A rP‘ x ª 6!Ł ı D ,XE N¢ 6!Ł ¨ rP‘ xE N¢ 1 A S* E
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Guarantee the minimum ventilation and enough air changing of laboratory and during the use of fume hoods and other equipments, guarantee the minimum air exchange rate of laboratory;
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Provide plete solution of fume hoods exhaust and laboratory supply air control in the unit of lab room. E N¢ VAV { 2ˇ4‡ß6
Performance of fume hood VAV control system G * K`) { Close loop control: N¢G£ { ¡ hE z ª b 1 /ƒ ¨2ˇ4‡0 n ˚K¨ <3s( ˆA 8V )
The response speed of air volume control is less than 1 second, stabilization time of the system is less than 3 seconds(adjustable) ‹N¢G£E N¢ M6N¢E { G * M6N¢E <,X { ª
The control method of face velocity sensor is for the