Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

CONTAMW 1.0 User Manual: Multizone Airflow and Contaminant Transport Analysis Software

Published

Author(s)

William S. Dols, George Walton, K R. Denton

Abstract

This manual describes the use of the computer program CONTAMW developed by NIST. CONTAMW is a multizone indoor air quality and ventilation analysis program designed to help you determine: air flows--infiltration, exfiltration, and room-to-room air flows in building systems driven by mechanical means, wind pressures acting on the exterior of the building, and buoyancy effects inducted by temperature differences between the building and the outside; contaminant concentrations--the dispersal of airborne contaminants transported by these air flows 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 air flows is useful to assess 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 air tightening efforts on infiltration rates. 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. Exposure estimates can be compared for different assumptions of ventilation rates and source strengths.
Citation
NIST Interagency/Internal Report (NISTIR) - 6476
Report Number
6476

Keywords

airflow analysis, building technology, computer program, contaminant dispersal, indoor air quality, multizone analysis, smoke control, ventilation

Citation

Dols, W. , Walton, G. and Denton, K. (2000), CONTAMW 1.0 User Manual: Multizone Airflow and Contaminant Transport Analysis Software, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860813 (Accessed December 7, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 1, 2000, Updated February 19, 2017