Labs21: Optimizing Laboratory Ventilation Design - Labs21 ...

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Green Strategies • Recycled Content Materials • Low-toxicity materials – Alternatives to epoxy – Alternatives to VCT – Trespa composite material • Construction waste management • CO 2 sensors, HVAC and lighting in offices and labs on occupancy sensors • Daylight harvesting • Radiant atrium flooring • Green Roof • Reduction of Air Change Rates Payette Associates Princeton Guyot Hall Addition Labs 21 Phone Forum - August 2003
Air Change Rates - Guidelines ASHRAE 62-2001 Source Budget Building <strong>Design</strong> Princeton Guyot Hall Addition 20 CFM/person = 3.6 ACH w/ 24 students & 10’ ceiling (University Labs). NFPA 45-2000 4 ACH Unoccupied, Occupied typically exceeds 8 ACH OSHA 1910.1450 – 1994 Prudent Practices – 1995 ASHRAE Applications - 2003 4 to 12 ACH is normally adequate of local exhaust (fume hoods are used). 6 to 12 ACH is normally adequate. Cooling may require higher rates. General Labs: 6 to 10 ACH normally adequate Animal: 15 ACH from NIH Guide BSL-1: BSL-2: Princeton University Standard = 10 Air Changes 3 to 4 ACH commonly used 6 to 15 ACH typical Payette Associates Labs 21 Phone Forum - August 2003
Page 1 and 2: Labs 21 Phone Forum Optimizing Labo
Page 3 and 4: Project Team Boston Payette Associa
Page 5: Green or LEED? • Project’s pros
Page 9 and 10: Air Change Rates - Design Process
Page 11 and 12: CFD Modeling of Lab Spaces: Case St
Page 13 and 14: What is CFD � CFD = Computational
Page 15 and 16: The CFD Process � Define the regi
Page 17 and 18: What you get After Running CFD �
Page 19 and 20: Turbulence - Why Worry? � Turbule
Page 21 and 22: Including the Effects of Turbulence
Page 23 and 24: Guyot Hall Teaching Lab - Geometry
Page 25 and 26: Guyot Hall Research Lab - Geometry
Page 27 and 28: Industrial Lab - RANS Model Figure
Page 29 and 30: Industrial Lab - LES Result LES Ani
Page 31: Where do we go from here? • How d

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