Complex of mathematical models for research of humidiry exchangeprocess between books and air environment of book depository

The problem of maintenance of optimum hydrothermal mode is a basis of exhibit storage in museums and a guarantee of painting and icons safety in churches, because the deviation from standard conditions is a source of material damaging.This paper is devoted to the research of a humidity exchange process between air environment of book depository and books, which are placed on the shelf.Basing on the developed software program there have been implemented the systematical calculations of humidity distribution during drying and humidification of sheet of books for different hydrothermal features of a book depository. The influence of book shelves interior on the regularities of water steam diffusion from book depository air into the air between sheets of paper and into the sheets themselves have been investigated. The analysis of calculation results have been done and a comparison of them with the existing experimental data either.