Heating load

Detached residential wooden houses are a common type of housing in Japan. Decay of wooden components within the walls is easily caused by condensation or defective flushing. To solve this problem, a double-skin system with a room-side air gap was developed. In this system, during winter, the airflow in the ventilated wall circulates freely around the whole house. Therefore, during daytime, the airflow moves solar heat to base, and releases heat to the house at night which can increase indoor temperature.

The improvement of air tightness in existing residential buildings could be triggered from the desire for better indoor comfort conditions and the expected reduction of cost for space heating. While the improvement of comfort sensation could not be easily understood from the building owner, the reduction of cost for space heating is much easier.

Guiyang is the capital city of Guizhou province in southwest China, located in the Mild Climatic zone in China. With the economy booming in recent years, the energy consumption in heating and cooling buildings in Guiyang continues to increase. This paper presents a computer simulation study using DeST software package, which is broadly used to simulate building energy consumption in China.