Development and evaluation of a multizone air flow and contaminant transport model within the frame of the International Energy Agency.

A number of interzonal air flow models have been developed to calculate air flows and pollutant transport mechanisms in both single-zone and multizone buildings. The International Energy Agency's Energy Conservation in Buildings and Community Systems program adopted a working group on multizone air flow modeling to study physical phenomena causing air flow and pollutant transport (e.g., moisture) in multizone buildings, develop numerical modules to be integrated into COMIS, and evaluate the computer code. COMIS allows to model flows and po1lutant transport from zone to zone through cracks, large vertical openings, ducts, flow controllers, kitchen hoods, and user-defined air flow components. The program allows dynamic time steps and introduces schedules for several input parameters. This paper introduces the multizone air flow model COMIS and shows an application of the program.