1995 Fiscal Year Final Research Report Summary
Simulation of air temperature and humidity considered nonequilibrium moisture transfer in the porous materials in a building
| Project/Area Number |
06650667
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Architectural environment/equipment
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| Research Institution | Gifu National College of Technology |
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Principal Investigator |
OHSAWA Tetsuo Gifu Natio. Conllege of Tech., Dept. of Architecture, Professor, 建築学科, 教授 (60024270)
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| Co-Investigator(Kenkyū-buntansha) |
TSUCHIKAWA Tadahiro Gifu National College of Tech., Dept. of Architecture, Associate Professor, 建築学科, 助教授 (50180005)
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| Project Period (FY) |
1994 – 1995
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| Keywords | Porous materials / nonequilibrium / moisture absorption and dehumidification / simultaneous heat and moisture transfer / moisture content / local moisture transfer coefficient |
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| Research Abstract |
Problems related to humidity are usually treated as an equilibrium moisture transfer phenomenon at the finite element in the ordinary building materials at recent studies. For porous materials, it is required that the problems are discussed as a nonequilibrium transfer phenomenon at the element within. We defined the local moisture transfer coefficient as the nonequilibrium transfer and developed the procedure to identify it in this study. The coefficients are obtained experimentally for a wood board under the step-up condition of moisture absorption by using the accurate humidity generator. Furthermore, variations of moisture absorption rate by numerical simulation with simultaneous heat and moisture transfer equations considered the local moisture transfer agree with those by experiment closely.
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