Design Approach For The Optimal Model Of An
Energy-efficient Timber Building With Various
Glazing Types And Surfaces On The South Façade
Author(s)
V. Žegarac Leskovar & M. Premrov
Abstract
The paper presents the reasonability of using an increased proportion of glazing
surfaces in prefabricated timber buildings with a special focus on energy
efficiency by using an enlarged glazing area on the south façade of the object.
The research is based on a case study of a two-storey house built in a
prefabricated timber-frame structural system taking the climate data for
Ljubljana into consideration. Parametric analysis is performed on a variation of
an increased proportion of the glazed surfaces’ impact on the south side of the
building according to the total surface of the south façade (AGAW) as a basic
variable. The analysis was carried out on different exterior wall elements having
different thermal properties, while the rest of the parameters, such as the ground
plan of the model as well as the active systems, roof and floor slab assemblies,
climate condition, etc. remain constant. The impact of different types of glazing
with various Uglass-values is additionally studied. The basic practical contribution
of the study is that the results presenting the determined function for the optimal
south oriented glazing size (AGAWopt) offer us the opportunity of selecting the
optimal way of energy-efficient renovation of existing timber-frame housing
with a possible combination of improving the thermal properties of the external
walls with the installation of an additional insulation layer (decreasing U-wall
value) and of the optimal of glazing area size on the south-oriented façade, which
is, in the case of a lower Uwall-value, noticeably lower.
Keywords: timber structures, energy efficiency, glazing, renovation.
Keywords
timber structures, energy efficiency, glazing, renovation
Related Book
Other papers in this volume
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