energy performance analysis of adnan menderes international airport

3.4. Modelling
Thermal simulation of a building requires the information with respect to the latter’s
dimensions, geometry, orientation and the thermal and optical properties of its materials. The
basic physical, thermal and optical material property parameters are used to built Building
element constructions in EnergyPlus are built from in building physics. Materials are specified
by types, while constructions are defined by the composition of materials. Finally, surfaces are
specified for the building with geometric coordinates as well as referenced constructions.
There are three material types that may be used to describe layers within opaque construction
elements in EnergyPlus:
• Material: regular,
• Material: regular-R,
• Material: air.
The first type requires knowledge of many of the thermal, optical and physical properties of the
material, but it allows EnergyPlus to take into account the thermal mass of the material and thus
allows the evaluation of transient conduction effects. The second is similar in nature but only
requires the thermal resistance (R-value) rather than the thickness, thermal conductivity,
density, and specific heat. The last type is only used for an air gap between other layers in a
construction. This type assumes that air is sufficiently lightweight and not moving, so as to
require only an R-value (Papadopoulos, et al. 2008).
In Figure 3.7 shows the first model drawn as nearly real of all building
construction. There are lots of details about building construction as shown in figure
4.7. But, in this instance, it was not possible to take results. However, when drawing
was simplified such as drawing one skylight instead of 22 small skylights, computer can
give results almost in one day. In figure 3.8 shows simplified drawing.
25