When building energy consumption is close to the expectation, it is the best orientation. And we know that there
are two methods for residential building to keep thermal comfort throughout the year. One is the natural ventilation,
and another is mechanical means [8] .Through the relationship between indoor comfort temperature and outdoor
mean air temperature [9](2), it can be deduced that natural ventilation cannot meet the requirement of the comfort
when the outdoor temperature exceeds 30 ć . By using building energy consumption simulation software
DesignBuilder, the building load under four different orientations were calculated out and were shown in Figure8 in
the condition of outdoor temperature is bigger than 30 ć. It can be seen that building energy consumption is in
minimum when the building towards the south, and then the north, the east. The worst is west.