Although the three small buildings are built in same area but the physical environment such as solar
direction and convection velocity are not the same. Therefore, it is important to make sure that the
physical values of each building location of three small buildings are not significant to experimental
result. In experiment, the three small buildings are not coated color on envelop surface of small
building. The results of the temperature are presented in Fig. 5. It shows that the building location is
not effect on the roof surface and room temperature of small buildings. The temperature of all surfaces is nearly equal in every experimental day. These show that three small buildings have got a nearby
thermal load and convection velocity transfer'