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Station 3 ?? Air Meters

Station 3 ?? Air Meters. Combustion Analyzer Carbon Monoxide Carbon Dioxide Particles Air Flow Vane Anemometer Exhaust Flow Box Pressures CAZ Test. No carbon monoxide should be detected in residential properties. Check outside air CO (set to “zero” outside)

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Station 3 ?? Air Meters

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  1. Station 3 ??Air Meters Combustion Analyzer Carbon Monoxide Carbon Dioxide Particles Air Flow Vane Anemometer Exhaust Flow Box Pressures CAZ Test

  2. No carbon monoxide should be detected in residential properties.

  3. Check outside air CO • (set to “zero” outside) • any CO found inside is • being produced inside, • or being re-entrained • from flue, etc.

  4. CO Poisoning from Combustion Appliance Back-drafting

  5. Big Hole in Building!

  6. Exhaust appliance in confined space

  7. dryer pulling flame out of the heater

  8. Supply Air Leak to the Outside Supply Air Leak to the outside = Building Depressurized

  9. Supply Duct Leaks to the outside Supply Duct Leaks to the outside cause building to be Depressurized

  10. Forced Air Systems (with insufficient “return”) Door closure causes Room A to be pressurized Zone B with return grill and combustion appliances is now under negative pressure and spillage or backdrafting can occur • # sq inches for cfm into rooms • Icf performance • Pv costs kWh now • ICBO 50 cfm crawls A B Can cause back-drafting of combustion devices

  11. IAQ Pro-Tip As CO2 builds up, so does “everything else”… “Everything else” is too difficult to measure and interpret

  12. Carbon Dioxide (CO2) • Generally not a health hazard in buildings by itself. • Outside CO2 levels usually in the 380 ppm range . . . and rising ! • Industrial Standard = 5,000 ppm 96

  13. Carbon Dioxide (CO2) • Used to estimate air exchange rates • Concentrations above 800 to 1,000 ppm indicate: ■ Crowded spaces ■ Low ventilation rates • Based on: • 380 ppm CO2 outside air • sedentary adult population • steady state indoor air concentration 97

  14. Cubic Feet Per Minute (CFM) ~ 15 cubic feet fresh air per minute for each person for classrooms(cfm/p)

  15. CO2 Estimate of Ventilation (energy issue) (multiple issues !! ) • 600 800 1,000 1,500 2,000+ • Carbon Dioxide • parts-per million (ppm) Over- Ventilated Ideal Under-Ventilated

  16. Carbon Dioxide vs. Ventilation Rate Carbon Dioxide (ppm) 2,400 1,400 1,000 800 600 380 (and above) Outside Air ----- 5 cfm/p ----- 10 cfm/p ----- 15 cfm/p ----- 20 cfm/p ----- 25 cfm/p Unacceptable Poor ASHRAE Standard 62 Outdoor 99

  17. 30 - 25 - 20 - 15 - 10 - 5 - 0 - OUTSIDE AIR (CFM / PERSON) | | | | | | 0 1000 2000 3000 4000 5000 100 CO2 Concentration (ppm)

  18. 30 - 25 - 20 - 15 - 10 - 5 - 0 - OUTSIDE AIR (CFM / PERSON) | | | | | | 0 1000 2000 3000 4000 5000 100 CO2 Concentration (ppm)

  19. Using the Vane Anemometer

  20. Check exhaust fan flow

  21. Exhaust Fan Flow Meter 3- Position Opening: “E1” “E2” “E3”

  22. Manometer & Flow Meter This set up measures pressure – must use the table

  23. Pressure & CFM Table

  24. Pressure & CFM Table

  25. Manometer & Flow Meter Flow reading direct from meter – “EX device”

  26. Average Human Hair 70 micrometers 10.0 micrometers 2.5 micrometers ~ 70 micrometers M. Lipsett, California Office of Environmental Health Hazard Assessment

  27. MERV PARTICLE TYPICAL CONTROLLED SIZE (m*) CONTAMINANT • 1 – 4 >10.0 Pollen, sanding dust, textile and carpet fibers • 5 – 8 3.0 – 10.0 Mold, spores, hair spray, cement dust • 9 – 12 1.0 – 3.0 Legionella, lead dust, welding fumes • 13 – 16 0.3 – 1.0 Bacteria, most tobacco smoke, insecticide dust, copier toner • 17 - 20  0.3 Virus, combustion smoke, radon progeny • *micron meter 107

  28. Laser Particle Counter 6 sizes of airborne particles HEPA Output

  29. 0.3 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 112,000 27,170 17,937 11,427 130

  30. 0.5 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 40,200 8,156 4,447 2,533 314

  31. 1.0 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 17,000 3,739 1,641 677 40

  32. 2.0 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 15,500 2,447 1,285 402 10

  33. 5.0 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 2,100 315 156 63 0

  34. 10.0 Micrometer 30 BuildingsMinimum 8 classroomsHighest and lowest values deleted Highest Measurement in 30 schools Average of each highest in 30 schools Average of 30 averages Average of each lowest in 30 schools Lowest measurement in 30 schools 3,600 56 32 9 0

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