Modeling of the hygrothermal absorption and desorption for underground building envelopes

Zhang, H. L., Marci, W. M. and Fu, X. Z. (2010) Modeling of the hygrothermal absorption and desorption for underground building envelopes. Energy and Buildings, 42 8: 1215-1219. doi:10.1016/j.enbuild.2010.02.012

Author Zhang, H. L.
Marci, W. M.
Fu, X. Z.
Title Modeling of the hygrothermal absorption and desorption for underground building envelopes
Journal name Energy and Buildings   Check publisher's open access policy
ISSN 0378-7788
Publication date 2010-08-01
Sub-type Article (original research)
DOI 10.1016/j.enbuild.2010.02.012
Open Access Status Not Open Access
Volume 42
Issue 8
Start page 1215
End page 1219
Total pages 5
Place of publication Lausanne, Switzerland
Publisher Elsevier S.A.
Language eng
Abstract The hygrothermal storage characteristics of an underground building envelope have discernible effects on the heat and humidity of the indoor environment. To predict the hygrothermal storage capacity, it is necessary to accurately calculate the transient heat and moisture flux through the envelope. This paper describes the development of a new hygrothermal model described with relative humidity and temperature based on the results of existing researches. The moisture model fully states actual moisture transfer process involving both vapor diffusion and liquid water migration in porous building envelopes. Verified using the results calculated by the mathematical model of Mendes et al., the new hygrothermal model can accurately predict the heat and moisture transfer of building envelopes. Hygrothermal absorption and desorption of three types of common underground building envelopes in Chengdu region in China are analyzed by using the new model. The results show that the hygrothermal absorption and desorption of underground building envelopes must be considered when the heat and moisture environment is controlled by HVAC. Taking account of these factors can reduce air-conditioning equipment capacity and save running energy. Copyright © 2010 Elsevier B.V. All rights reserved.
Keyword Hygrothermal absorption and desorption
Underground buildings
Building envelopes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Faculty of Engineering, Architecture and Information Technology Publications
Official 2011 Collection
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Created: Sun, 04 Jul 2010, 10:05:11 EST