Record Display for the EPA National Library Catalog
RECORD NUMBER: 13 OF 21
|OLS Field Name||OLS Field Data|
|Main Title||Modeling the Influence of Active Subslab Depressurization (ASD) Systems on Airflows in Subslab Aggregate Beds.|
|Author||Mosley, R. B. ;|
|CORP Author||Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.|
|Additional Subjects||Mathematical models ; Air pollution control ; Slabs ; Radon ; Indoor air pollution ; Stationary sources ; Soils ; Aggregates ; Air flow ; Active subslab depressurization|
The paper describes a simple model that allows the pressure difference in a subslab aggregate layer to be estimated as a function of radial distance from the central suction point of an active subslab depressurization (ASD) system by knowing the average size, thickness, porosity, and permeability of the aggregate, along with the total flow rate. The flow regimes may span the range from fully developed turbulence, through the transition, to Darcian flow. In order to describe the effect of ASD on radon entry the model should be coupled to a model describing flow through the soil and slab.