Thermal comfort is one of the most important requirements that scientists
and building designers must meet to ensure the indoor air quality knowing its
importance on productivity and the health of occupants. However, it has
never been of great concern for architects and a rchitectural historians and
seldom explores it. Buildings are the large consumer of the most energy co n-sumption (around 40% worldwide) and generate around 35% of GHGs like
CO2
that leads to extreme climate change. Hence, general and specific
eco- friendly solutions in the field of building construction are required.
Analysis of this study shows that air conditioning consumption can be si gni f-icantly reduced thanks to the compressed earth bricks and by taking into ac-count the climate and the orientation of the facades. However, this paper establishes viable low- cost option of building energy consumption while maintaining the thermal comfort and good indoor air quality. This work explains the effect of a single residential room orientation, by reducing the thermal
amplitude, and improving the thermal phase shift in Ouagadougou climate conditions in April. Internal temperature was modelled with 8 cardinal orientations. The result corresponds to a decrease of thermal amplitude
damping greater than 4˚C between East-West and North-South sides and, with a thermal phase shift of 4 hours 30 minutes between the Nord and West walls.

Thermal Comfort, Building Optimal Orientation, Thermal Amplitude, Thermal Phase Shift, Energy Consumption, Optimal Orientation