Abstract
A numerical calculation model to simulate the moisture absorption/desorption characteristics of papers is proposed, of which target is to contribute to the accurate prediction for the indoor hygrothermal environment. A field survey concerning quantities and existing status of various papers in office spaces and a library leads to adopt the control volume method for an assumed one-dimensional wall as a fundamental theory. In that method κ, ν and λ' are variably regarded, but also an influence of the latent heat term on the thermal transfer equation is completely treated. Hygroscopic properties of κ, ν and λ' are experimentally determined, just because those functions vs. temperature and absolute humidity within the papers are requisite in the proposed model. Finally, the simulation models on both a bunch of papers on an office desk and books in a shelf are obtained.
