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  • 1 University of Debrecen, H-4028 Debrecen, ótemető u. 2–4, Hungary
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Recently, it has become extremely important to reduce the heating energy demand and the CO2 emission of buildings. This reduction can easily be achieved by insulating the shell of buildings. By thermal insulation not only the heating energy demand can be reduced but also higher thermal efficiency can be reached. Therefore, measurements, calculations and simulations are carried out on the energy efficiency of buildings. Furthermore, the combination of methods is of great importance. Combination of experiments with building simulations solution can make design practices and sizing processes easier in the investigation of building performance. The purpose of this article is to demonstrate how the energy balance of a building can be changed in function of the wet building envelope in the Central European Region. A real and available building (old family house) was tested and it was placed (hypothetically) in three different countries (Austria, Hungary and Slovakia). In this study two types of load-bearing structures (brick and concrete) covered with four different types of insulations (mineral wool, expanded polystyrene, graphite-doped expanded polystyrene, and extruded polystyrene) were tested. The change in the heating energy of the building in three different countries by the function of measured water contents of the thermal insulators was simulated by CASAnova simulation software.

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