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

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

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

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

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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