Evaluation of ventilation effectiveness using an IAQ model
Technical Report
·
OSTI ID:6587435
The paper discusses an evaluation of ventilation effectiveness, using a new ventilation solver that can determine the distributions of a time-averaged flow field, the effective turbulent diffusion coefficient, and the steady-state or time-dependent contaminant concentration distribution within isothermal indoor space. The model was written for a personal computer, and the computational speed is extremely fast (a few minutes) with reasonable accuracy so that engineers can use it as a tool to evaluate ventilation performance in indoor space yet to be built. Ventilation performance depends on room geometry; the ventilation method; operating conditions; and location, strength, and types of contaminants. Case studies were performed using a user-friendly indoor air quality (IAQ) model. Ventilation performance was evaluated using three proposed new scales called Ventilation Performance Indices (VPIs): average contaminant concentration or decay rate (VPI1), average contaminant diffusion coefficient (VPI2), and average contaminant concentration or decay rate at the breathing level (VPI3).
- Research Organization:
- Research Triangle Inst., Durham, NC (United States)
- OSTI ID:
- 6587435
- Report Number(s):
- PB-93-173086/XAB; CNN: EPA-R-817083
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
ACCURACY
AIR POLLUTION
AIR QUALITY
ALLOCATIONS
ANIMALS
BUILDINGS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
CONTROL
DATA
DECOMPOSITION
DIFFUSION
DISTRIBUTION
ENGINEERS
ENVIRONMENTAL QUALITY
EVALUATION
GEOMETRY
INDOOR AIR POLLUTION
INFORMATION
MAMMALS
MAN
MATHEMATICAL MODELS
MATHEMATICS
NUMERICAL DATA
PERFORMANCE TESTING
PERSONNEL
POLLUTION
POLLUTION CONTROL
PRIMATES
PROFESSIONAL PERSONNEL
QUALITY ASSURANCE
SIMULATION
STATISTICAL DATA
TESTING
VENTILATION
VERTEBRATES
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
ACCURACY
AIR POLLUTION
AIR QUALITY
ALLOCATIONS
ANIMALS
BUILDINGS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
CONTROL
DATA
DECOMPOSITION
DIFFUSION
DISTRIBUTION
ENGINEERS
ENVIRONMENTAL QUALITY
EVALUATION
GEOMETRY
INDOOR AIR POLLUTION
INFORMATION
MAMMALS
MAN
MATHEMATICAL MODELS
MATHEMATICS
NUMERICAL DATA
PERFORMANCE TESTING
PERSONNEL
POLLUTION
POLLUTION CONTROL
PRIMATES
PROFESSIONAL PERSONNEL
QUALITY ASSURANCE
SIMULATION
STATISTICAL DATA
TESTING
VENTILATION
VERTEBRATES