期刊
INTERNATIONAL JOURNAL OF THERMOPHYSICS
卷 34, 期 5, 页码 894-908出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-012-1183-3
关键词
Effective media theory; Hollow bricks; Moisture; Specific heat capacity; Thermal conductivity
The effective thermal conductivity and effective specific heat capacity of hollow brick blocks are investigated as a function of moisture content. While the effective specific heat capacity as a heat storage parameter is calculated using the linear theory of mixtures, the effective thermal conductivity as a heat transport parameter is analyzed using the effective media theory. At first, the effective thermal conductivity of the dry hollow brick block is calculated using a combination of properties of the brick body and air cavities, and verified using experimental data. Then, the effective thermal conductivity of the brick body is analyzed as a function of moisture content both theoretically and experimentally, and appropriate homogenization formulas are identified. Finally, the effective thermal conductivity of the whole hollow bricks is expressed as a function of moisture content from the dry state to water saturation.
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