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nh3simman
25-04-2007, 04:12 AM
Here is something for free that you may find useful.

http://www.bfrl.nist.gov/IAQanalysis/software/index.htm

CONTAM 2.4b is the latest edition of the popular NIST tool that predicts airflows and contaminant concentrations in multizone building systems. CONTAM is based on a graphic interface that allows the user to draw floor plans on a "sketchpad" and employ "icons" to represent airflow paths, ventilation system components, and contaminant sources. CONTAM has been used at NIST to study the indoor air quality impacts of heating, ventilation, and air-conditioning systems in single-family residential buildings, ventilation in large mechanically ventilated office buildings, and radon entry and transport in large residential, office, and school buildings. CONTAM 2.4b may be downloaded free of charge.

Brian_UK
25-04-2007, 07:24 PM
Cheers Buddy, more for the hard disk :)