TY - CPAPER
KW - HVAC
KW - Air transport
KW - Modeling pollutant concentrations
AU - Clifford C Federspiel
AU - Huilin Li
AU - David M Auslander
AU - David M Lorenzetti
AU - Ashok J Gadgil
AB - <p>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.</p>
BT - Indoor Air 2002, June 30 - July 5, 2002
C2 - LBNL-49603
CY - Monterey, California
LA - eng
N2 - <p>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.</p>
PP - Monterey, California
PY - 2002
SP - 217
EP - 222
T2 - Indoor Air 2002, June 30 - July 5, 2002
T3 - Indoor Air 2002, June 30 - July 5, 2002
TI - Modeling Transient Contaminant Transport in HVAC Systems and Buildings
ER -