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

2. Material Emissions and Pollutant Transport in Building Envelopes T1
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/

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

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

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

6. Research Objectives and Scope
“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.”
Specific objectives for the two year period (EPA03):
Develop a VOC extraction method
Develop a fundamental mechanistic model for simulating the combined heat, air, moisture and pollutant (CHAMP) transport
the effects of wall cavities and cracks
in-material diffusions and sorption on the VOC transport.
Evaluate the extraction method and the model by conducting small and full-scale experiments
A typical wood-framed residential wall assembly
Assembly materials: interior paints, gypsum wallboards, insulation materials, and oriented strand boards

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

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