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ASTM Selected Technical Papers
Heat-Air-Moisture Transport: Measurements on Building Materials
By
P. Mukhopadhyaya
P. Mukhopadhyaya
1
National Research Council
?
Ottawa, ON,
Canada
Search for other works by this author on:
M. K. Kumaran
M. K. Kumaran
1
National Research Council
?
Ottawa, ON,
Canada
Search for other works by this author on:
ISBN-10:
0-8031-3422-3
ISBN:
978-0-8031-3422-5
No. of Pages:
119
Publisher:
ASTM International
Publication date:
2007

Hygrothermal simulation programs (HSPs) have the potential to help the way building enclosures are designed if end users are convinced the results are reliable. However, HSPs suffer from a lack of manufacturer-specific material data. HSP users often “create” materials by scouring multiple sources for hygrothermal properties. To the less familiar HSP user, significant error can be introduced into simulations by using properties that are calculated from variable sources. Through a series of case studies, this paper illustrates how material properties can make a difference in hygrothermal calculations and, ultimately, material specification.

1.
Holm
,
A.
and
Kuenzel
,
H. M.
, “
Uncertainty Approaches for Hygrothermal Building Simulations-Drying of an AAC Flat Roof in Different Climates
,”
Proceedings, 7th International IBPSA Conference
,
IBPSA
,
Rio de Janeiro, Brazil
,
2001
, 8 pp.
2.
Kuenzel
,
H.
,
Karagiozis
,
A.
, and
Holm
,
A.
, “
Wärme Feuchtetransport Instationär (WUFI) Pro Version 3.3.5.93
,” Transient Hygrothermal Software,
Oak Ridge National Laboratory and Fraunhofer Institute for Building Physics
,
2004
.
3.
Wilkes
,
K. E.
,
Atchley
,
J. A.
, and
Childs
,
P. W.
, “
Effect of Drying Protocols on Measurement of Sorption Isotherms of Gypsum Building Materials
,”
Proceedings, Performance of Exterior Envelopes of Whole Buildings IX
,
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
,
Atlanta, GA
,
2004
.
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