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AirborneFilter
Dec.2009 1
10 CDC1, WHO2 .3 30,000-40,000/..
1 Centers of Disease Control and Prevention 2 World Health Organization 3
1.
25 ()4 ( Air Change per Hour,ACH) 15 ACH (WHO,CDC)
2. 17-27C() 20-22 C (WHO)5 20-23 C (CDC)6
3.
4. 45-55%rh () 30-60%rh(WHO,CDC)
5. (Unidirectional)
4., 1,2551, 515WHO 2004, Practical guidelines for infection control in
health care facilities,p.20 6CDC 2003,Guidelines for Environmental Infection Control in
Health-Care Facilities ,p.17
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AirborneFilter
Dec.2009 2
7 (High Efficiency Particulate Air)
6.
7. (Return Air) Fresh Air
AHU
1. 5 () ( Air Change per Hour,ACH)
2.
3.
:
7 HEPA 99.97% efficiency on 0.3m particles OR Electronic Air Filter 99% efficiency on 0.01m particles
2 A B A
OR8
1) 2)
3)
4) OR
5) 6)
C B A
8 Operating Room
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AirborneFilter
Dec.2009 3
Fresh Air HEPA(Media) AHU
HEPA Pressure Drop9 1-3 AHU (High Static) AHU OR
1) 2) OR
3) 4) Fresh Air
9 HEPA 1-1.25 in.WG.
5) 6)
C C 6x6x3 m. (Laminar Flow System) AHU OR Electronic Filter10 Pressure Drop 0.25 in.WG.
B C 300,000-350,000 10,000/.. Filter Electronic Filter AHU AHU Filter 5 HEPA Pressure Drop Electronic Filter 5
10 0.01micron
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AirborneFilter
Dec.2009 4
A C D
1)
2) Electronic Filter
3) Electronic Filter
4)
Electronic Filter Pressure Drop 250,000-300,000 8,500 /..
E (Ultra-Clean Room) 11 Computational Fluid Dynamic (CFD)
Standard laminar flow system with out curtain
Laminar flow system with air curtain E C
11 Air Distribution Strategy Impact on Operation Room Infection Control,2007
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AirborneFilter
Dec.2009 5
,,7 . ,8 .,,2551 WHO 2004, Practical guidelines for infection control in
health care facilities CDC 2003,Guidelines for Environmental Infection
Control in Health-Care Facilities NIOSH 2003,Guidance for Filtration and Air-Cleaning
Systems to Protect Building Environments 21 3,
2552 Air Distribution Strategy Impact on Operation Room
Infection Control, John Swift,Emily Avis,Berry Millard,Thomas M. Lawrence
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