CONTAMW 2.0 User Manual. Multizone Airflow and Contaminant Transport Analysis Software.
CONTAMW 2.0 User Manual. Multizone Airflow and
Contaminant Transport Analysis Software.
(1697 K)
Dols, W. S.; Walton, G. N.
NISTIR 6921; 161 p. November 2002.
Available from:
Orders Only) 800-553-6847;
Website: http://www.ntis.gov
Keywords:
manuals; computer programs; airflow analysis;
contaminant; contaminant dispersal; indoor air quality;
multizone analysis; smoke control; smoke management;
ventilation
Abstract:
This manual describes the computer program CONTAMW
version 2.0 developed by NIST. CONTAMW is a multizone
indoor air quality and ventilation analysis program
designed to help you determine: airflows and pressures
infiltration, exfiltration, and room-to-room airflows
and pressure differences in building systems driven by
mechanical means, wind pressures acting on the exterior
of the building, and buoyancy effects induced by
temperature differences between the building and the
outside; contaminant concentrations the dispersal of
airborne contaminants transported by these airflows and
transformed by a variety of processes including chemical
and radio-chemical transformation, adsorption and
desorption to building materials, filtration, and
deposition to building surfaces; and/or personal
exposure the prediction of exposure of building
occupants to airborne contaminants for eventual risk
assessment. CONTAMW can be useful in a variety of
applications. Its ability to calculate building airflows
and relative pressures between zones of the building is
useful for assessing the adequacy of ventilation rates
in a building, to determine the variation in ventilation
rates over time, to determine the distribution of
ventilation air within a building, and to estimate the
impact of envelope airtightening efforts on infiltration
rates. The program has been used extensively for the
design and analysis of smoke management systems. The
prediction of contaminant concentrations can be used to
determine the indoor air quality performance of
buildings before they are constructed and occupied, to
investigate the impacts of various design decisions
related to ventilation system design and building
material selection, to evaluate indoor air quality
control technologies, and to assess the indoor air
quality performance of existing buildings. Predicted
contaminant concentrations can also be used to estimate
personal exposure based on occupancy patterns. Version
2.0 contains several new features including: non-grace
contaminants, unlimited number of contaminants,
contaminant-related libraries, separate weather and
ambient contaminant files, building controls, scheduled
zone temperatures, improved solver to reduce simulation
times and several user interface related features to
improve usability.
