Assessment of Indoor Climate Environment Via Hygrothermal Simulation in Historical Churches

This paper studies how well the interior climate is naturally maintain. The church subjected to simulation is a Romano-Catholic one, Saint Archangel Michael in Sabaoani, Romania. Taking into account the construction, the exploitation during the years and the data from humidity and temperature sensors, some simulations are performed. In the simulations is used Ansys Fluent software. Historical churches, when they are unheated for hundreds of years, often face problems with moisture after a heating system is introduced. Because of the large number of persons attending to the liturgical service humidity in the air exceeds the limits and condenses on the walls and windows. High humidity can also damage the artworks and painting inside the churches. The conservation using heating control was tested in simulation model. Furthermore, are tested two different systems with and without ventilation in order to create in indoor climate for preservation of a monumental building and its monumental interior. Finally, is given a set of rules to create the interior climate proper for artworks conservation.