Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Anton TenWolde; Iain S. Walker
    Date: 2001
    Source: Performance of exterior envelopes of whole buildings VIII [electronic resource] : integration of building envelopes. Atlanta, GA : American Society of Heating, Refrigerating and Air-Conditioning Engineers, c2001: ISBN: 1883413966: 6 pages.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (64 KB)

    Description

    This paper outlines a methodology to obtain design values for indoor boundary conditions for moisture design calculations for residences. This is part of a larger effort by ASHRAE Standard Project Committee 160P, Design Criteria for Moisture Control in Buildings, to formulate criteria for moisture design loads, analysis techniques, and material and building performance. The standard is being developed to provide a consistent framework for moisture analysis and design. The assumptions for boundary conditions can have a large influence on the results of the moisture design analysis of a building, and the choice of boundary conditions may be the most important determinant for design recommendations based on the analysis. This paper focuses on interior moisture design loads for residences and proposes a procedure to estimate the design indoor humidity for both winter and summer conditions. The interior humidity is a function of moisture release, ventilation, dehumidification, and moisture storage in the materials in the building. If the home is not air conditioned or dehumidified, the weekly or monthly average design indoor humidity can be calculated from design ventilation and moisture release. In an air-conditioned home, the situation is more complex. It is difficult to quantify the dehumidification of an air-conditioning system typically controlled by indoor temperature rather than moisture because the cycling frequency of the air- conditioning equipment affects its ability to remove moisture. Although the specific data required for sophisticated calculations that account for changes in moisture removal due to system cycling are not available, this paper will discuss the issues involved and describe simplified alternative approaches.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    TenWolde, Anton; Walker, Iain S. 2001. Interior moisture design loads for residences. Performance of exterior envelopes of whole buildings VIII [electronic resource] : integration of building envelopes. Atlanta, GA : American Society of Heating, Refrigerating and Air-Conditioning Engineers, c2001: ISBN: 1883413966: 6 pages.

    Keywords

    Wooden-frame houses, moisture, dampness in buildings, wood moisture, building moisture, dwelling moisture, building testing, wooden buildings, humidity control, environmental engineering, moisture content of wood in service, moisture content

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page