TY - JOUR
T1 - Practical moisture buffering effect of three hygroscopic materials in real-world conditions
AU - Zhang, Huibo
AU - Yoshino, Hiroshi
AU - Hasegawa, Kenichi
AU - Liu, Jing
AU - Zhang, Weirong
AU - Xuan, Huang
N1 - Funding Information:
The work described in this paper was financially supported by the National Natural Science Foundation of China (No. 51308333, and No. 51308332). A part of work was also supported by the Joint Usage/Research Center Program of MEXT (Japanese Government) (Grant No. D15153004).
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/3/15
Y1 - 2017/3/15
N2 - Indoor humidity levels play an important role on occupants’ health, durability of the building envelope, and energy consumption levels. To achieve a sustainable, durable, healthy, and comfortable building environment, it is essential to maintain proper indoor humidity levels. Hygroscopic materials are typically used as finishing materials in some houses to control humidity, however, there is no criterion established to evaluate the moisture buffering effect of these. In this research, a series of experiments examining the moisture buffering effect of three types of hygroscopic materials were conducted in an actual room using different air change rates, hygroscopic material loading ratios, and moisture loads. A new index is proposed to evaluate the moisture adsorption effect (MBEa) and moisture desorption effect (MBEd) of hygroscopic materials at the room scale. Using the proposed index of MBEa/MBEd, multivariate linear regression analysis was performed to find the relationship between MBEa/MBEd and the major parameters that influence this. The model results show that the moisture adsorption/desorption effect of the hygroscopic materials in real-world conditions increased exponentially when the ambient air change rate decreased or the loading ratio of hygroscopic material increased.
AB - Indoor humidity levels play an important role on occupants’ health, durability of the building envelope, and energy consumption levels. To achieve a sustainable, durable, healthy, and comfortable building environment, it is essential to maintain proper indoor humidity levels. Hygroscopic materials are typically used as finishing materials in some houses to control humidity, however, there is no criterion established to evaluate the moisture buffering effect of these. In this research, a series of experiments examining the moisture buffering effect of three types of hygroscopic materials were conducted in an actual room using different air change rates, hygroscopic material loading ratios, and moisture loads. A new index is proposed to evaluate the moisture adsorption effect (MBEa) and moisture desorption effect (MBEd) of hygroscopic materials at the room scale. Using the proposed index of MBEa/MBEd, multivariate linear regression analysis was performed to find the relationship between MBEa/MBEd and the major parameters that influence this. The model results show that the moisture adsorption/desorption effect of the hygroscopic materials in real-world conditions increased exponentially when the ambient air change rate decreased or the loading ratio of hygroscopic material increased.
KW - Air change rate
KW - Humidity
KW - Hygroscopic material
KW - Loading ratio
KW - Moisture buffering effect
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U2 - 10.1016/j.enbuild.2017.01.021
DO - 10.1016/j.enbuild.2017.01.021
M3 - Article
AN - SCOPUS:85009343309
VL - 139
SP - 214
EP - 223
JO - Energy and Buildings
JF - Energy and Buildings
SN - 0378-7788
ER -
