EPA-Review-7/ VOC Emission Characterization and CHAMP Development o EPA03 Thrust 1: Material Emissions and Pollutant Transport in Building Envelopes u Overview (10 minutes, by J. Zhang) u VOC extraction method development (10 minutes, by J. Smith) u Dual-chamber test method development (10 minutes, by M. Salonvaara) u CHAMP development & validation (20 minutes, by M. Salonvaara) o EPA04 Tasks: u T1.2 Model-based Characterization of Indoor Gaseous Emissions (10 minutes, by J. Zhang) u T3.2 Reduced order models for building interzonal transport (10 minutes, by J. Zhang)

Material Emissions and Pollutant Transport in Building Envelopes T1.A Experimental; T1.B CHAMP Modeling Jensen Zhang (PI) Mikael Salonvaara, Jim Smith, and Hui Li Andreas Nicolai, John Grunewald, Zhibin Zhang and Beverly Guo Building Energy and Environmental Systems Laboratory (BEESL) EPA-Review-4/

EPA-Review-7/ Why? o VOCs (including formaldehyde)--- a major pollution indoors u ASHRAE Standard Ventilation for Acceptable IAQ u CIB (Conseil International du Bâtiment) Performance Criteria of Buildings for Health and Comfort o Green Building Products u Harmonized test method u Simplified, fast and less expensive screening/rating method u Long-term emission characteristics under usage conditions o Source-Sink Interactions u Large number of sources/sinks and pollutants u Primary and secondary emissions u Short and long-term exposure o Understanding of Emission/sorption and Transport Processes u Composite materials u Multilayer material assemblies u Correlations with VOC properties u Effects of environmental conditions u O3 initiated VOC and particle emissions o Building Envelopes---a key role in IAQ control u Emissions (e.g., formaldehyde) u Uncontrolled airflows (leakages) u Hygrothermal conditions u Molds u Outdoor to indoor pollutant transport

EPA-Review-7/ IAQ & Energy Performance of Buildings: Systems Approach Coupled Air Moisture Simulation Heat heated cellargarage cooking, laundryEmissions warm roof cold roof thermal bridge (surface condensation, mold) air leakage imperfect sealing (salt efflorescence) thermal bridge transmission ventilation convection air exchange ground water ground water capillary flow diffusion transmission convection temperature relative humidity long wave radiation solar radiation temperature (Extinction: Adsorption, Dispersion, Reflection) air tightness air leakage (rot, mold) Pollutant

EPA-Review-7/ Approach: making use of existing HAM model – add and improve… CHAMP Model Effects of building materials, assembly design & construction on IAQ Outdoor to indoor pollutant transport (VOCs, O3 & particles) Initial conditions: Emittable pollutants in each layer Boundary conditions: Outdoor concentrations Weather data Indoor conditions Transport & storage properties of materials: Diffusion Sorption/deposition Assembly structure: Cracks Cavities Material surfaces and interfaces Human Exposure Health, comfort, productivity & security Model-based Test Methods Indoor materials & furnishing systems (04): Workstations Composite wood products O 3 initiated secondary emissions (pilot 04) Moisture/mold control (04)

EPA-Review-7/ Research Objectives and Scope Specific objectives for the two year period (EPA03): o Develop a VOC extraction method o Develop a fundamental mechanistic model for simulating the combined heat, air, moisture and pollutant (CHAMP) transport u the effects of wall cavities and cracks u in-material diffusions and sorption on the VOC transport. o Evaluate the extraction method and the model by conducting small and full-scale experiments u A typical wood-framed residential wall assembly u Assembly materials: interior paints, gypsum wallboards, insulation materials, and oriented strand boards “The ultimate goal of this research is to develop reliable and practical model-based test and prediction methods for rating products, and for predicting the long-term VOC emissions over the products’ service life.”

EPA-Review-7/ Material Emissions & Pollutant Transport in Bldg Envelopes o Task 1A u Experimental—VOC extraction, material characterization and full-scale chamber testing o Task 1B u Development of Heat, Air, Moisture and Pollutant Transport Model Mark Bomberg Task 1ALead Jensen Zhang Thrust Lead J.Smith Voc Extraction Miao Yang Material Characterization Hui Li Full Scale Testing Beverly Guo Chemistry Zhibin Zhang Chemistry Michael Salonvaara Task 1B Lead Andreas Nicolai Software integration Miao Yang Material Characterization Hui Li VOC Model & Full Scale Testing Beverly Guo Chemistry Zhibin Zhang Chemistry

EPA-Review-7/ VOC Emission Characterization and CHAMP Development EPA03 Thrust 1: o Material Emissions and Pollutant Transport in Building Envelopes Overview (10 minutes, by J. Zhang) u VOC extraction method development (10 minutes, by J. Smith) u Dual-chamber test method development (10 minutes, by M. Salonvaara) u CHAMP development & validation (20 minutes, by M. Salonvaara) EPA04 Tasks: o T1.2 Model-based Characterization of Indoor Gaseous Emissions u 10 minutes, by J. Zhang o T3.2 Reduced order models for building interzonal transport u 10 minutes, by J. Zhang