Numerical Comparison of Thermal Performances of Different Insulation Materials in External Wall Model
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Keywords:
Thermal Insulation, Insulation Material, Thermal Analysis, Computational fluid Dynamics (CFD), EnergyAbstract
In terms of heating and cooling buildings, thermal insulation is one of the most effective ways
to conserve energy. The selection of the insulation material and the determination of the optimal insulation
thickness are very important in terms of energy savings and providing thermal comfort conditions. In this
study, the thermal behavior of wall models designed using 4 different insulation materials for an exterior
wall was examined. The analysis was carried out using Ansys software for 4 different wall models with
brick as building material and Expanded Polystyrene (EPS), Extruded Polystyrene (XPS), Neopor and
Polyisocyanurate (PIR) as insulation materials. Wall models consist of 20 mm internal plaster, 215 mm
brick, insulation material (EPS, XPS, Neopor and PIR) and 30 mm external plaster. To compare the analysis
results, the insulation materials thickness was determined to be 100 mm. The temperature contours obtained
for these wall models were compared to the optimal insulation thicknesses and payback periods obtained
from the calculations. Additionally, costs were examined from an economic perspective. It was observed
that heat loss was minimal, and temperature curves were better in the wall model created using PIR.
Furthermore, an examination of optimal insulation thicknesses and payback periods revealed that PIR
insulation thickness was more optimal, but despite its higher unit cost, the payback period was shorter.
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