Examining the temperature curve in different facade constructions in the climate of southeast Asia.

The efficiency of a building envelope in southeast Asia is mainly determined by how the exposure to the strong sun is handled, while the envelope in the Central European climate is primarily geared toward cold seasons with temperatures around the freezing point.

Question:
How is the temperature curve for facade constructions affected when the strong sun exposure in South East Asia is taken into consideration? For the examined constructions, a minimal standard, but relevant for Asia, was chosen on purpose.
The effect was examined for a solid external wall (A), a window (B), and a balcony (C).

Minimal
A)    solid external wall without thermal insulation
B)    single glazing with internal sunscreen
C)    single glazing with internal sunscreen

Including thermal insulation
A)    solid external wall with thermal insulation (12cm)
B)    insulated glazing (2-IV) with internal sunscreen
C)    insulated glazing (2-IV) with internal sunscreen

Including sun shading
A)    solid external wall with external sun shading
B)    single glazing with with external sun shading
C)    single glazing with with external sun shading

Including thermal insulation and sun shading
A)    solid external wall with thermal insulation (12cm) and external sun shading
B)    insulated glazing (2-IV) with external sun shading
C)    insulated glazing (2-IV) with external sun shading

“including thermal insulation and sun shading”

Multilayered
A)    solid external wall with thermal insulation (12cm) und ventilated outer shell
B)    insulated glazing (2-IV) with a curtain double skin facade (insulated glazing or sun shading)
C)    insulated glazing (2-IV) with curtain “brise soleil”

Evaluation:

Acceptable progression of the temperature curve in a facade can be reached relatively easily with windows, when external sun shading is used. For closed external walls, creating external shade or simple thermal insulation (12 cm) is useful.
An optimal result can be achieved by using external sun shading in combination with thermal insulation windows (2 times IV).
Multilayered constructions may be useful depending on situation and usage, yet, possible significantly increased construction costs must be taken into consideration.

Recommendation:

- Result “sufficient”: facade with sun shading
- Result “good”: Facade with insulation and sun shading

overview

Minimal

Including thermal insulation

Including sun shading

Including thermal insulation and sun shading

Multilayered