Effect Of Thermal Insulation On Hygric And
Thermal Conditions In The Envelopes Of
Renovated Historical Buildings
Author(s)
J. Maděra, V. Kočí & R. Černý
Abstract
The effects of selected exterior thermal insulation systems on hygric and thermal
conditions in the envelopes of renovated historical buildings are studied. The
load bearing structures formed by typical stone materials used on Czech
territory, such as sandstone and argillite, and provided with different types of
insulation systems are subjected to computational hygrothermal analysis. The
coupled heat and moisture transport problem is solved using the standard
Galerkin finite element approach, and a computational implementation is
performed. The computer code in C++ is then used in a series of computational
simulations. Climatic data corresponding to the test reference year for Prague are
used as boundary conditions. The results of computer simulations of moisture
and temperature fields are then utilized in the subsequent service life analysis.
Keywords: hygrothermal simulation, external insulation, heat and moisture
transport, finite element method.
1 Introduction
For thermal insulation of existing and newly built structures, exterior thermal
insulation systems are the most frequently applied. They are capable of
formation of compact insulation layers; herewith the possible thermal bridges
that can lead in specific cases to a significant increase of thermal losses are easily
eliminated. Application of exterior thermal insulation systems also reduces the
thermal loading of envelope structures (especially of their joints) that are usually
exposed to the negative effects of temperature changes. The exterior insulation
can be realized in the form of a contact system or with air gap. The contact
Keywords
hygrothermal simulation, external insulation, heat and moisture
transport, finite element method.
Related Book
Other papers in this volume
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