Tools (Programs)

Quite a number of multizone airflow models have been developed and are available. An overview of available codes, physical models applied, and nec­essary input parameters is given in Orme.13 An intermodel comparison of five models can be found in Allard.11 Four typical and widely used codes are presented below.

11.4.5.1COMIS

COMIS calculates the air and contaminant transport in multizone buildings. It includes a graphic user interface and database links. It was ini­tially developed in a one year workshop at the Lawrence Berkeley National Lab14 and further developed and extensively validated in the frame of the Annex 23 Multizone Airflow Modelling project of the IEA (International Energy Agency).8’15 There exists an adapted version of the COMIS simula­tion engine to be used in the TRNSYS building and systems simulation code (see Section 11.5).

I 1.4.5.2 CONTAM96

CONTAM96 is based on earlier programs by NIST (National Institute of Standards and Technology), AIRNET (airflows), CONTAM (contaminant dis­persal), and ASCOS (smoke transport).9

I 1.4.5.3 BREEZE

BREEZE is a software package for ventilation airflows in single and mul­ticelled buildings, developed by the Building Research Establishment. BREEZE also includes a contaminant analysis routine.16

II.4.5.4 AIOLOS

This code originates from the University of Athens and has been further developed in the frame of an European project, the results of which are docu­mented in Allard,11 including a CD with the AIOLOS code.

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