TY - CONF
T1 - Modeling Transient Contaminant Transport in HVAC Systems and Buildings
T2 - Indoor Air 2002, June 30 - July 5, 2002
Y1 - 2002/
SP - 217
EP - 222
A1 - Clifford C. Federspiel
A1 - Huilin Li
A1 - David M. Auslander
A1 - David M. Lorenzetti
A1 - Ashok J. Gadgil
KW - Air transport
KW - hvac
KW - Modeling pollutant concentrations
AB - A mathematical model of the contaminant transport in HVAC systems and buildings is described. The model accounts for transients introduced by control elements such as fans and control dampers. The contaminant transport equations are coupled to momentum equations and mass continuity equations of the air. To avoid modeling variable transport delays directly, ducts are divided into a large number of small sections. Perfect mixing is assumed in each section. Contaminant transport equations are integrated with momentum equations in a way that guarantees mass continuity by using two non-negative velocities for computing the mass transport between elements. Computer simulations illustrate how the model may be used to analyze and design control systems that respond to a sudden release of a toxic contaminant near a building. By coupling transient flow prediction with transient contaminant prediction, the model overcomes a number of problems with existing contaminant transport codes.
JF - Indoor Air 2002, June 30 - July 5, 2002
CY - Monterey, California
U2 - LBNL-49603
ER -