THERMAL BRIDGES AT MASONRY WALLS MADE WITH CERAMIC BLOCKS FORESEEN WITH VERTICAL HOLLOWS

Abstract

The paper presents results of numerical analysis for determination of the equivalent thermal conductivity for vertical hollow ceramic blocks and for masonry made from them. The heat flow crossing through the existing thermal bridges at walls made of vertical hollow ceramic blocks, respectively the linear heat transfer coefficients, the corrected average thermal resistance and corrected average thermal transmittance, can be determined based on the plane temperature field in stationary thermal regime, which takes into consideration the thermal conductivity of the air existing in the gaps, which is variable with temperature. The working method and the developed calculus program are useful for a correct energy design of new types of hollow ceramic blocks, of new buildings made with masonry structure of vertical hollow ceramic blocks and also in the rehabilitation process of existing buildings made with this type of structure, in order to ensure optimum thermal efficiency.