MOIST
Program to predict combined transfer of heat and moisture in multi-layer building construction. Inputs hourly weather data from diskette and predicts the moisture content and temperature of the construction layers as a function of time of year. Can be used to develop guidelines and practices for controlling moisture in walls, flat roofs, and cathedral ceilings.
Keywords
combined heat and moisture transfer, envelope
Validation/Testing
N/A
Expertise Required
Low to moderate level of computer literacy; most users require about 3 hours to learn how to use the program.
Users
Over 1250.
Audience
Building engineers, architects, consultants.
Input
ASHRAE WYEC Weather Data (over 50 cities available at http://www.bfrl.nist.gov/863/moist.html); user-defined building construction data.
Output
Moisture content of the construction layers is plotted versus time of year on the computer screen during program execution; in addition, various formatted output files are generated for subsequent analysis.
Computer Platform
PC-compatible, 486 or higher; Windows 3.1/95/98/NT, and a VGA or higher resolution monitor.
Programming Language
Fortran, Visual Basic
Strengths
User- friendly; predicts detailed hourly heat and moisture performance of building components. Can be used to generate guidelines and practices for controlling moisture.
Weaknesses
One-dimensional; does not include the transfer of heat and moisture by air movement.
Contact
Company: |
National Institute of Standards and Technology |
Address: |
Building and Fire Research Laboratory |
Telephone: |
(301) 975-4922 |
Facsimile: |
(301) 975-5433 |
E-mail: |
|
Website: |
Availability
Moist 3.0 for Windows available at no cost from the web site. Should you experience difficulty downloading the Moist software program from the aforementioned web site, please provide your mailing address to: Paula Svincek, facsimile (301) 975-5433, e-mail MOIST@nist.gov.