Building facade has a major impact on building energy demand and there is great potential for building
facade to reduce energy demand through the parameter change, such as window-to-wall ratio (WWR),
glazing type, fixed exterior shading, and solar heat gain control strategies [1,2]. These parametric studies
often used in design processes involve changing one parameter, while leaving others constant. However,
these processes can potentially miss important interactive effects [3]. One way to find a global optimal
solution is to use enumerative search methods where each possible parameter setting is combined with
one another. When applying the simulation process in an architectural setting, the conventional building
energy simulation process is too time-consuming because of the large number of combinations. Also, due