PANDORA database: a compilation of indoor air pollutant emissions Marc O. Abadie and Patrice Blondeau LEPTIAB University of La Rochelle, France Corresponding email: mabadie@univ-lr.fr 1
Scope Context Modeling of pollutant concentration in a room Overview of PANDORA database Examples of database treatment Conclusions/Perspectives 2
IAQ models require: Context Envelope leakage information, Weather data, Ventilation system characteristics, Contaminant source emission rates, Sink removal rates, Occupant schedules, Air cleaner removal rates... Contaminant source emission rates databases: SOPHIE (a database of SOurces of Pollution for a Healthy and comfortable Indoor Environement; Bluyssen et al., 2000), MEDB-IAQ (a Material Emission DataBase and Single-Zone IAQ Simulation Program; Zhang et al., 1999), BUMA (prioritization of BUilding MAterials as indoor pollution sources; Bartzis et al., 2009), the U.S. Environmental Protection Agency database (U.S. EPA, 1999). PANDORA: compilation of emission rates of both gaseous and particulate pollutants from materials, occupant activities and cleaning products. 3
Modeling of pollutant concentration in a room Gaseous pollutant emission rate: pollutant mass per time, or pollutant mass per time per surface area for materials, or pollutant mass per source unit for occupant activities such as the use of printers, copy machines, smoking cigarette, or pollutant mass per combustible mass or energy units for combustion products. Particulate pollutant emission rate: particle number per time unit per particle size, and particle density. 4
Overview of PANDORA 5
Overview of PANDORA 6
Status 370 sources 5406 pollutant emission rates 7
Some results extracted from PANDORA Pollutants French IAQO EU INDEX NRC Target Health Effect: VOC list Carcinogen Formaldehyde A 1 Yes Recognized Benzene A 1 Yes Recognized Acetaldehyde A 2 Yes Suspected Toluene B 2 Yes Styrene C 2 Yes Suspected m-xylene C 2 Yes o-xylene C 2 Yes p-xylene C 2 Yes 8
Emission rates Formaldehyde Prototypical room: 100m 3 room with 40m 2 of floor area 9
Emission rates Formaldehyde Prototypical room: 100m 3 room with 40m 2 of floor area [min; max] of max White: at 3 days Black: at 28 days 10
Min. ventilation rates Formaldehyde Prototypical room: 100m 3 room with 40m 2 of floor area Assumptions: steady-state, well-mixed air, no sorption by surface, and clean ventilated air. ER: Emission rate (mg/h), V: Volume of the room (m 3 ), MRL: Minimal Risk Level Chronic: 10 mg/m 3 for formaldehyde Acute: 50 mg/m 3 for formaldehyde 11
Min. ventilation rates Formaldehyde Prototypical room: 100m 3 room with 40m 2 of floor area Assumptions: steady-state, well-mixed air, no sorption by surface, and clean ventilated air. [min; max] of max White: at 3 days Black: at 28 days ER: Emission rate (mg/h), V: Volume of the room (m 3 ), MRL: Minimal Risk Level Chronic: 10 mg/m 3 for formaldehyde Acute: 50 mg/m 3 for formaldehyde 12
Min. ventilation rates TOP 8 13
Conclusions/Perspectives PANDORA: Microsoft Access: LEPTIAB tool for IAQ 14
Conclusions/Perspectives Web-version: 15
Conclusions/Perspectives Web-version: 16