Improving the thermal protection characteristics of building enclosing structures of the Samara Academic Drama Theater building

Abstract

Preservation of the architectural appearance of buildings of historical and cultural heritage is a prerequisite for their energy modernization when performing major repairs or reconstruction. In this regard, it is not possible to use facade systems to reduce heat losses by external walls. The use of internal insulation, as construction practice has shown, quite often led to a violation of the humidity regime of enclosing structures and, as a result, to the formation of dark spots and mold fungi on the internal surfaces. To prevent moisture accumulation in enclosing structures, with internal insulation, only thermal insulation materials with a low coefficient of vapor permeability should be used. The article presents the results of a thermal imaging survey of the facades of the Samara Academic Drama Theater building, which indicate increased heat loss in the basement of the building and the exterior walls made of silicate bricks after reconstruction in 1967. In order to meet modern regulatory requirements for the thermal protection of buildings of historical and cultural heritage, it was proposed to additionally insulate the exterior walls from the inside above the zero mark with foam glass, as well as warm plaster in the basement and basement of the building. Solutions are proposed for the replacement of window structures, entrance doors, coverings and ceilings to increase the energy efficiency of the operated building. When performing the thermophysical calculation of the above-listed enclosing structures, the authors methodology for estimating the plane of possible condensation was applied, which allows for a higher probability of assessing moisture accumulation in them.