Indoor Air Quality -- The Basics And More

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality The Basics – and More

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DEFINITIONS per proposed OSHA IAQ Rule, April 1994 (FR 59:15968-16039) Sick Building Syndrome (SBS) Eight (8) non-inclusive symptoms, identified by WHO (1983)

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DEFINITIONS per proposed OSHA IAQ Rule, April 1994 (FR 59:15968-16039) Sick Building Syndrome (cont’)

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DEFINITIONS per proposed OSHA IAQ Rule, April 1994 (FR 59:15968-16039) Building-Related Illness (BRI) Specific medical conditions of known cause or origin, which can often be documented by physical signs and laboratory findings. BRI includes: END SECTION

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],MICROBIOLOGICAL CONTAMINANTS Plantae, Animalia, Fungi Protoctista: algae, amoebas, ciliates, slime molds

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Aspergillus flavus in culture

Aspergillus flavus conidiophore

Aspergillus fumigatus in culture

Aspergillus fumigatus conidiophore

Aspergillus fumigatus conidia

Penicillium spp. conidiophore

Stachybotrys chartarum conidiophore

From the comic strip “Rex Morgan, MD” (August 6, 2001)

Indoor Environmental Quality MICROBIOLOGICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],END SECTION

Thermal comfort: PERCEPTION IS REALITY

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],THERMAL COMFORT ANSI/ASHRAE Std. 55-1992 (Addendum 55a-1995): “ Thermal Environmental Conditions for Human Occupancy”

Indoor Environmental Quality THERMAL COMFORT (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],ANSI/ASHRAE Std. 55-1992 (Addendum 55a-1995): “ Thermal Environmental Conditions for Human Occupancy”

Figure 2 ANSI/ASHRAE Std. 55a-1995

From: Sterling, E.M., “Criteria for Human Exposure to to Humidity in Occupied Buildings”, 1985. ASHRAE Transactions CH-85-13-1

Indoor Environmental Quality THERMAL COMFORT (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],ANSI/ASHRAE Std. 55-1992 (Addendum 55a-1995): “ Thermal Environmental Conditions for Human Occupancy”

Indoor Environmental Quality THERMAL COMFORT (cont’) ,[object Object],[object Object],[object Object],[object Object],Numerous studies support the health benefits of humidification in cold climates END SECTION

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],ADEQUATE VENTILATION Outdoor air ventilation [cfm/occupant or cfm/sq ft] vs. total airflow [air changes per hour]

[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) Offices - 30 cfm per person Schools & Churches - 40 cfm per person Legislature Halls - 60 cfm per seat

Indoor Environmental Quality ADEQUATE VENTILATION (cont’) Historical Minimum Ventilation Rates ASHVE 1914 22 State Codes 1922

[object Object],[object Object],[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) Building Codes

[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) ASHRAE Std. 62-1999: “ Ventilation for Acceptable Indoor Air Quality”

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) ASHRAE Std. 62-1999: “ Ventilation for Acceptable Indoor Air Quality”

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) Using CO 2 levels as an indicator of adequate ventilation

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality ADEQUATE VENTILATION (cont’) Using CO 2 levels as an indicator of adequate ventilation (cont’)

Indoor Environmental Quality ADEQUATE VENTILATION (cont’) ,[object Object],Using CO 2 levels as an indicator of adequate ventilation (cont’) END SECTION Outdoor air ventilation rate CO 2 equilibrium concentration 20 CFM/occ 880 ppm 15 CFM/occ 1050 ppm 10 CFM/occ 1410 ppm 7.5 CFM/occ 1760 ppm 5 CFM/occ 2470 ppm

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHEMICAL CONTAMINANTS

Indoor Environmental Quality CHEMICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],PM10, SO2, NO2, CO, Pb and O3

Estimated median living-area radon concentrations by county Source: http://www.stat.columbia.edu/radon/states.html

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object]

Indoor Environmental Quality CHEMICAL CONTAMINANTS (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],END SECTION

Indoor Environmental Quality The Basics – and More ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],PARTICULATE MATTER

Indoor Environmental Quality PARTICULATE MATTER (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],NAAQS - annual mean: 50  g/m 3 2nd highest 24-hour: 150  g/m 3

Indoor Environmental Quality PARTICULATE MATTER (cont’) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],END SECTION

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Indoor Environmental Quality The Basics – and More QUESTIONS??

Indoor Air Quality -- The Basics And More

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