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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.
Publisher 1991
Year Published 1991
Report Number EPA/600/D-91/226;
Stock Number PB91-242925
Additional Subjects Mathematical models ; Air pollution control ; Slabs ; Radon ; Indoor air pollution ; Stationary sources ; Soils ; Aggregates ; Air flow ; Active subslab depressurization
Library Call Number Additional Info Location Last
NTIS  PB91-242925 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/26/1991
Collation 12p
Abstract 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.
Supplementary Notes Presented at the International Symposium on the Natural Radiation Environment (5th), Salzburg, Austria, September 22-28, 1991.
NTIS Title Notes Rept. for May-Aug 91.
Category Codes 68F; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 131121944
Origin NTIS
Type CAT