Ashrae Journal - December 2008 - (Page 22) Table 1: Computed and Recommended CO2 Concentrations for Outdoor Airflow Monitoring or DCV Upper Control Limit Monitoring DCV Upper Actual Default Values LEED-EB IEQ Assumed CO2 Program Control Limit Steady-State Combined Outdoor Credit 1 Activity Level Generation Concentration Concentration Concentration Air Rate Per Person Concentration (Alarm Level) (Caution Level) Occupancy Category Correctional Facilities Cell Dayroom Guard Stations Booking/Waiting Educational Facilities Day Care (Through Age 4) Day Care Sickroom Classrooms (Age 5 – 8) Classrooms (Age 9+) Lecture Classroom Lecture Hall (Fixed Seats) Art Classroom Science Laboratories University/College Lab Wood/Metal Shop Computer Lab Media Center Music/Theater/Dance Multiuse Assembly Food and Beverage Service Restaurant Dining Rooms Cafeteria/Fast-Food Dining Bars, Cocktail Lounges General Break Rooms Coffee Stations Conference/Meeting cfm L/s (met)* (cfm per person) (ppm)† (ppm)† (ppm)†,‡ (ppm)†,§ 10 7 9 9 4.9 3.5 4.5 4.4 0.8 1.2 1 1 0.007 0.010 0.008 0.008 1,072 1,840 1,333 1,333 1,200 2,000 1,500 1,500 965 1,656 1,200 1,200 1,233 2,116 1,533 1,533 17 17 15 13 8 8 19 17 17 19 15 15 12 8 8.6 8.6 7.4 6.7 4.3 4 9.5 8.6 8.6 9.5 7.4 7.4 5.9 4.1 1.5 0.8 1 1 1 1 1.2 1.2 1.2 2 1.2 1.2 2 1.5 0.013 0.007 0.008 0.008 0.008 0.008 0.010 0.010 0.010 0.017 0.010 0.010 0.017 0.013 1,141 795 960 1,046 1,450 1,450 931 993 993 1,284 1,072 1,072 1,800 1,975 1,300 900 1,100 1,200 1,600 1,600 1,100 1,100 1,100 1,400 1,200 1,200 1,900 2,100 1,027 716 864 942 1,305 1,305 837 894 894 1,156 965 965 1,620 1,778 1,312 915 1,104 1,203 1,668 1,668 1,070 1,142 1,142 1,477 1,233 1,233 2,070 2,271 10 9 9 5.1 4.7 4.7 1.4 1.4 1.4 0.012 0.012 0.012 1,576 1,707 1,707 1,700 1,900 1,900 1,418 1,536 1,536 1,812 1,963 1,963 10 11 6 5.1 5.5 3.1 1.2 1.2 1 0.010 0.010 0.008 1,408 1,316 1,800 1,600 1,500 1,900 1,267 1,185 1,620 1,619 1,514 2,070 22 ASHRAE Journal ashrae.org December 2008 http://www.ashrae.org
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